Merge branch 'main' into feature/windows-quickstart

micro-fix: resolve NativeCommandError in uv sync and ParserError in dynamic env var assignment

.claude/settings.local.json

@@ -1,40 +0,0 @@
-{
-  "permissions": {
-    "allow": [
-      "Bash(npm install:*)",
-      "Bash(npm test:*)",
-      "Skill(building-agents-construction)",
-      "Skill(building-agents-construction:*)",
-      "Bash(PYTHONPATH=core:exports pytest:*)",
-      "mcp__agent-builder__create_session",
-      "mcp__agent-builder__get_session_status",
-      "mcp__agent-builder__set_goal",
-      "mcp__agent-builder__list_mcp_servers",
-      "mcp__agent-builder__test_node",
-      "mcp__agent-builder__add_node",
-      "mcp__agent-builder__add_edge",
-      "mcp__agent-builder__validate_graph",
-      "Bash(ruff check:*)",
-      "Bash(PYTHONPATH=core:exports python:*)",
-      "mcp__agent-builder__list_tests",
-      "mcp__agent-builder__generate_constraint_tests",
-      "Bash(python -m agent:*)",
-      "Bash(python agent.py:*)",
-      "Bash(python -c:*)",
-      "Bash(done)",
-      "Bash(xargs cat:*)",
-      "mcp__agent-builder__list_mcp_tools",
-      "mcp__agent-builder__add_mcp_server",
-      "mcp__agent-builder__check_missing_credentials",
-      "mcp__agent-builder__store_credential",
-      "mcp__agent-builder__list_stored_credentials",
-      "mcp__agent-builder__delete_stored_credential",
-      "mcp__agent-builder__verify_credentials",
-      "Bash(PYTHONPATH=/home/timothy/oss/hive/core:/home/timothy/oss/hive/exports python:*)",
-      "Bash(PYTHONPATH=core:exports:tools/src python -m hubspot_input:*)",
-      "mcp__agent-builder__export_graph"
-    ]
-  },
-  "enabledMcpjsonServers": ["agent-builder", "tools"],
-  "enableAllProjectMcpServers": true
-}

.claude/settings.local.json.example

@@ -0,0 +1,34 @@
+{
+  "permissions": {
+    "allow": [
+      "mcp__agent-builder__create_session",
+      "mcp__agent-builder__set_goal",
+      "mcp__agent-builder__add_node",
+      "mcp__agent-builder__add_edge",
+      "mcp__agent-builder__configure_loop",
+      "mcp__agent-builder__add_mcp_server",
+      "mcp__agent-builder__validate_graph",
+      "mcp__agent-builder__export_graph",
+      "mcp__agent-builder__load_session_by_id",
+      "Bash(git status:*)",
+      "Bash(gh run view:*)",
+      "Bash(uv run:*)",
+      "Bash(env:*)",
+      "mcp__agent-builder__test_node",
+      "mcp__agent-builder__list_mcp_tools",
+      "Bash(python -m py_compile:*)",
+      "Bash(python -m pytest:*)",
+      "Bash(source:*)",
+      "mcp__agent-builder__update_node",
+      "mcp__agent-builder__check_missing_credentials",
+      "mcp__agent-builder__list_stored_credentials",
+      "Bash(find:*)",
+      "mcp__agent-builder__run_tests",
+      "Bash(PYTHONPATH=core:exports:tools/src uv run pytest:*)",
+      "mcp__agent-builder__list_agent_sessions",
+      "mcp__agent-builder__generate_constraint_tests",
+      "mcp__agent-builder__generate_success_tests"
+    ]
+  },
+  "enabledMcpjsonServers": ["agent-builder", "tools"]
+}

.claude/skills/building-agents-construction/SKILL.md

@@ -1,361 +0,0 @@
----
-name: building-agents-construction
-description: Step-by-step guide for building goal-driven agents. Creates package structure, defines goals, adds nodes, connects edges, and finalizes agent class. Use when actively building an agent.
-license: Apache-2.0
-metadata:
-  author: hive
-  version: "2.0"
-  type: procedural
-  part_of: building-agents
-  requires: building-agents-core
----
-
-# Agent Construction - EXECUTE THESE STEPS
-
-**THIS IS AN EXECUTABLE WORKFLOW. DO NOT DISPLAY THIS FILE. EXECUTE THE STEPS BELOW.**
-
-When this skill is loaded, IMMEDIATELY begin executing Step 1. Do not explain what you will do - just do it.
-
----
-
-## STEP 1: Initialize Build Environment
-
-**EXECUTE THESE TOOL CALLS NOW:**
-
-1. Register the hive-tools MCP server:
-
-```
-mcp__agent-builder__add_mcp_server(
-    name="hive-tools",
-    transport="stdio",
-    command="python",
-    args='["mcp_server.py", "--stdio"]',
-    cwd="tools",
-    description="Hive tools MCP server"
-)
-```
-
-2. Create a build session (replace AGENT_NAME with the user's requested agent name in snake_case):
-
-```
-mcp__agent-builder__create_session(name="AGENT_NAME")
-```
-
-3. Discover available tools:
-
-```
-mcp__agent-builder__list_mcp_tools()
-```
-
-4. Create the package directory:
-
-```
-mkdir -p exports/AGENT_NAME/nodes
-```
-
-**AFTER completing these calls**, tell the user:
-
-> ✅ Build environment initialized
->
-> - Session created
-> - Available tools: [list the tools from step 3]
->
-> Proceeding to define the agent goal...
-
-**THEN immediately proceed to STEP 2.**
-
----
-
-## STEP 2: Define and Approve Goal
-
-**PROPOSE a goal to the user.** Based on what they asked for, propose:
-
-- Goal ID (kebab-case)
-- Goal name
-- Goal description
-- 3-5 success criteria (each with: id, description, metric, target, weight)
-- 2-4 constraints (each with: id, description, constraint_type, category)
-
-**FORMAT your proposal as a clear summary, then ask for approval:**
-
-> **Proposed Goal: [Name]**
->
-> [Description]
->
-> **Success Criteria:**
->
-> 1. [criterion 1]
-> 2. [criterion 2]
->    ...
->
-> **Constraints:**
->
-> 1. [constraint 1]
-> 2. [constraint 2]
->    ...
-
-**THEN call AskUserQuestion:**
-
-```
-AskUserQuestion(questions=[{
-    "question": "Do you approve this goal definition?",
-    "header": "Goal",
-    "options": [
-        {"label": "Approve", "description": "Goal looks good, proceed"},
-        {"label": "Modify", "description": "I want to change something"}
-    ],
-    "multiSelect": false
-}])
-```
-
-**WAIT for user response.**
-
-- If **Approve**: Call `mcp__agent-builder__set_goal(...)` with the goal details, then proceed to STEP 3
-- If **Modify**: Ask what they want to change, update proposal, ask again
-
----
-
-## STEP 3: Design Node Workflow
-
-**BEFORE designing nodes**, review the available tools from Step 1. Nodes can ONLY use tools that exist.
-
-**DESIGN the workflow** as a series of nodes. For each node, determine:
-
-- node_id (kebab-case)
-- name
-- description
-- node_type: `"llm_generate"` (no tools) or `"llm_tool_use"` (uses tools)
-- input_keys (what data this node receives)
-- output_keys (what data this node produces)
-- tools (ONLY tools that exist - empty list for llm_generate)
-- system_prompt
-
-**PRESENT the workflow to the user:**
-
-> **Proposed Workflow: [N] nodes**
->
-> 1. **[node-id]** - [description]
->
->    - Type: [llm_generate/llm_tool_use]
->    - Input: [keys]
->    - Output: [keys]
->    - Tools: [tools or "none"]
->
-> 2. **[node-id]** - [description]
->    ...
->
-> **Flow:** node1 → node2 → node3 → ...
-
-**THEN call AskUserQuestion:**
-
-```
-AskUserQuestion(questions=[{
-    "question": "Do you approve this workflow design?",
-    "header": "Workflow",
-    "options": [
-        {"label": "Approve", "description": "Workflow looks good, proceed to build nodes"},
-        {"label": "Modify", "description": "I want to change the workflow"}
-    ],
-    "multiSelect": false
-}])
-```
-
-**WAIT for user response.**
-
-- If **Approve**: Proceed to STEP 4
-- If **Modify**: Ask what they want to change, update design, ask again
-
----
-
-## STEP 4: Build Nodes One by One
-
-**FOR EACH node in the approved workflow:**
-
-1. **Call** `mcp__agent-builder__add_node(...)` with the node details
-
-   - input_keys and output_keys must be JSON strings: `'["key1", "key2"]'`
-   - tools must be a JSON string: `'["tool1"]'` or `'[]'`
-
-2. **Call** `mcp__agent-builder__test_node(...)` to validate:
-
-```
-mcp__agent-builder__test_node(
-    node_id="the-node-id",
-    test_input='{"key": "test value"}',
-    mock_llm_response='{"output_key": "test output"}'
-)
-```
-
-3. **Check result:**
-
-   - If valid: Tell user "✅ Node [id] validated" and continue to next node
-   - If invalid: Show errors, fix the node, re-validate
-
-4. **Show progress** after each node:
-
-```
-mcp__agent-builder__get_session_status()
-```
-
-> ✅ Node [X] of [Y] complete: [node-id]
-
-**AFTER all nodes are added and validated**, proceed to STEP 5.
-
----
-
-## STEP 5: Connect Edges
-
-**DETERMINE the edges** based on the workflow flow. For each connection:
-
-- edge_id (kebab-case)
-- source (node that outputs)
-- target (node that receives)
-- condition: `"on_success"`, `"always"`, `"on_failure"`, or `"conditional"`
-- condition_expr (Python expression, only if conditional)
-- priority (integer, lower = higher priority)
-
-**FOR EACH edge, call:**
-
-```
-mcp__agent-builder__add_edge(
-    edge_id="source-to-target",
-    source="source-node-id",
-    target="target-node-id",
-    condition="on_success",
-    condition_expr="",
-    priority=1
-)
-```
-
-**AFTER all edges are added, validate the graph:**
-
-```
-mcp__agent-builder__validate_graph()
-```
-
-- If valid: Tell user "✅ Graph structure validated" and proceed to STEP 6
-- If invalid: Show errors, fix edges, re-validate
-
----
-
-## STEP 6: Generate Agent Package
-
-**EXPORT the graph data:**
-
-```
-mcp__agent-builder__export_graph()
-```
-
-This returns JSON with all the goal, nodes, edges, and MCP server configurations.
-
-**THEN write the Python package files** using the exported data. Create these files in `exports/AGENT_NAME/`:
-
-1. `config.py` - Runtime configuration with model settings
-2. `nodes/__init__.py` - All NodeSpec definitions
-3. `agent.py` - Goal, edges, graph config, and agent class
-4. `__init__.py` - Package exports
-5. `__main__.py` - CLI interface
-6. `mcp_servers.json` - MCP server configurations
-7. `README.md` - Usage documentation
-
-**IMPORTANT entry_points format:**
-
-- MUST be: `{"start": "first-node-id"}`
-- NOT: `{"first-node-id": ["input_keys"]}` (WRONG)
-- NOT: `{"first-node-id"}` (WRONG - this is a set)
-
-**Use the example agent** at `.claude/skills/building-agents-construction/examples/online_research_agent/` as a template for file structure and patterns.
-
-**AFTER writing all files, tell the user:**
-
-> ✅ Agent package created: `exports/AGENT_NAME/`
->
-> **Files generated:**
->
-> - `__init__.py` - Package exports
-> - `agent.py` - Goal, nodes, edges, agent class
-> - `config.py` - Runtime configuration
-> - `__main__.py` - CLI interface
-> - `nodes/__init__.py` - Node definitions
-> - `mcp_servers.json` - MCP server config
-> - `README.md` - Usage documentation
->
-> **Test your agent:**
->
-> ```bash
-> cd /home/timothy/oss/hive
-> PYTHONPATH=core:exports python -m AGENT_NAME validate
-> PYTHONPATH=core:exports python -m AGENT_NAME info
-> ```
-
----
-
-## STEP 7: Verify and Test
-
-**RUN validation:**
-
-```bash
-cd /home/timothy/oss/hive && PYTHONPATH=core:exports python -m AGENT_NAME validate
-```
-
-- If valid: Agent is complete!
-- If errors: Fix the issues and re-run
-
-**SHOW final session summary:**
-
-```
-mcp__agent-builder__get_session_status()
-```
-
-**TELL the user the agent is ready** and suggest next steps:
-
-- Run with mock mode to test without API calls
-- Use `/testing-agent` skill for comprehensive testing
-- Use `/setup-credentials` if the agent needs API keys
-
----
-
-## REFERENCE: Node Types
-
-| Type           | tools param            | Use when                                       |
-| -------------- | ---------------------- | ---------------------------------------------- |
-| `llm_generate` | `'[]'`                 | Pure reasoning, JSON output, no external calls |
-| `llm_tool_use` | `'["tool1", "tool2"]'` | Needs to call MCP tools                        |
-
----
-
-## REFERENCE: Edge Conditions
-
-| Condition     | When edge is followed                 |
-| ------------- | ------------------------------------- |
-| `on_success`  | Source node completed successfully    |
-| `on_failure`  | Source node failed                    |
-| `always`      | Always, regardless of success/failure |
-| `conditional` | When condition_expr evaluates to True |
-
----
-
-## REFERENCE: System Prompt Best Practice
-
-For nodes with JSON output, include this in the system_prompt:
-
-```
-CRITICAL: Return ONLY raw JSON. NO markdown, NO code blocks.
-Just the JSON object starting with { and ending with }.
-
-Return this exact structure:
-{
-  "key1": "...",
-  "key2": "..."
-}
-```
-
----
-
-## COMMON MISTAKES TO AVOID
-
-1. **Using tools that don't exist** - Always check `mcp__agent-builder__list_mcp_tools()` first
-2. **Wrong entry_points format** - Must be `{"start": "node-id"}`, NOT a set or list
-3. **Skipping validation** - Always validate nodes and graph before proceeding
-4. **Not waiting for approval** - Always ask user before major steps
-5. **Displaying this file** - Execute the steps, don't show documentation

.claude/skills/building-agents-construction/examples/online_research_agent/README.md

@@ -1,80 +0,0 @@
-# Online Research Agent
-
-Deep-dive research agent that searches 10+ sources and produces comprehensive narrative reports with citations.
-
-## Features
-
-- Generates multiple search queries from a topic
-- Searches and fetches 15+ web sources
-- Evaluates and ranks sources by relevance
-- Synthesizes findings into themes
-- Writes narrative report with numbered citations
-- Quality checks for uncited claims
-- Saves report to local markdown file
-
-## Usage
-
-### CLI
-
-```bash
-# Show agent info
-python -m online_research_agent info
-
-# Validate structure
-python -m online_research_agent validate
-
-# Run research on a topic
-python -m online_research_agent run --topic "impact of AI on healthcare"
-
-# Interactive shell
-python -m online_research_agent shell
-```
-
-### Python API
-
-```python
-from online_research_agent import default_agent
-
-# Simple usage
-result = await default_agent.run({"topic": "climate change solutions"})
-
-# Check output
-if result.success:
-    print(f"Report saved to: {result.output['file_path']}")
-    print(result.output['final_report'])
-```
-
-## Workflow
-
-```
-parse-query → search-sources → fetch-content → evaluate-sources
-                                                      ↓
-                                write-report ← synthesize-findings
-                                      ↓
-                               quality-check → save-report
-```
-
-## Output
-
-Reports are saved to `./research_reports/` as markdown files with:
-
-1. Executive Summary
-2. Introduction
-3. Key Findings (by theme)
-4. Analysis
-5. Conclusion
-6. References
-
-## Requirements
-
-- Python 3.11+
-- LLM provider API key (Groq, Cerebras, etc.)
-- Internet access for web search/fetch
-
-## Configuration
-
-Edit `config.py` to change:
-
-- `model`: LLM model (default: groq/moonshotai/kimi-k2-instruct-0905)
-- `temperature`: Generation temperature (default: 0.7)
-- `max_tokens`: Max tokens per response (default: 16384)

.claude/skills/building-agents-construction/examples/online_research_agent/__init__.py

@@ -1,23 +0,0 @@
-"""
-Online Research Agent - Deep-dive research with narrative reports.
-
-Research any topic by searching multiple sources, synthesizing information,
-and producing a well-structured narrative report with citations.
-"""
-
-from .agent import OnlineResearchAgent, default_agent, goal, nodes, edges
-from .config import RuntimeConfig, AgentMetadata, default_config, metadata
-
-__version__ = "1.0.0"
-
-__all__ = [
-    "OnlineResearchAgent",
-    "default_agent",
-    "goal",
-    "nodes",
-    "edges",
-    "RuntimeConfig",
-    "AgentMetadata",
-    "default_config",
-    "metadata",
-]

.claude/skills/building-agents-construction/examples/online_research_agent/agent.py

@@ -1,429 +0,0 @@
-"""Agent graph construction for Online Research Agent."""
-
-from framework.graph import EdgeSpec, EdgeCondition, Goal, SuccessCriterion, Constraint
-from framework.graph.edge import GraphSpec
-from framework.graph.executor import ExecutionResult
-from framework.runtime.agent_runtime import AgentRuntime, create_agent_runtime
-from framework.runtime.execution_stream import EntryPointSpec
-from framework.llm import LiteLLMProvider
-from framework.runner.tool_registry import ToolRegistry
-
-from .config import default_config, metadata
-from .nodes import (
-    parse_query_node,
-    search_sources_node,
-    fetch_content_node,
-    evaluate_sources_node,
-    synthesize_findings_node,
-    write_report_node,
-    quality_check_node,
-    save_report_node,
-)
-
-# Goal definition
-goal = Goal(
-    id="comprehensive-online-research",
-    name="Comprehensive Online Research",
-    description="Research any topic by searching multiple sources, synthesizing information, and producing a well-structured narrative report with citations.",
-    success_criteria=[
-        SuccessCriterion(
-            id="source-coverage",
-            description="Query 10+ diverse sources",
-            metric="source_count",
-            target=">=10",
-            weight=0.20,
-        ),
-        SuccessCriterion(
-            id="relevance",
-            description="All sources directly address the query",
-            metric="relevance_score",
-            target="90%",
-            weight=0.25,
-        ),
-        SuccessCriterion(
-            id="synthesis",
-            description="Synthesize findings into coherent narrative",
-            metric="coherence_score",
-            target="85%",
-            weight=0.25,
-        ),
-        SuccessCriterion(
-            id="citations",
-            description="Include citations for all claims",
-            metric="citation_coverage",
-            target="100%",
-            weight=0.15,
-        ),
-        SuccessCriterion(
-            id="actionable",
-            description="Report answers the user's question",
-            metric="answer_completeness",
-            target="90%",
-            weight=0.15,
-        ),
-    ],
-    constraints=[
-        Constraint(
-            id="no-hallucination",
-            description="Only include information found in sources",
-            constraint_type="quality",
-            category="accuracy",
-        ),
-        Constraint(
-            id="source-attribution",
-            description="Every factual claim must cite its source",
-            constraint_type="quality",
-            category="accuracy",
-        ),
-        Constraint(
-            id="recency-preference",
-            description="Prefer recent sources when relevant",
-            constraint_type="quality",
-            category="relevance",
-        ),
-        Constraint(
-            id="no-paywalled",
-            description="Avoid sources that require payment to access",
-            constraint_type="functional",
-            category="accessibility",
-        ),
-    ],
-)
-
-# Node list
-nodes = [
-    parse_query_node,
-    search_sources_node,
-    fetch_content_node,
-    evaluate_sources_node,
-    synthesize_findings_node,
-    write_report_node,
-    quality_check_node,
-    save_report_node,
-]
-
-# Edge definitions
-edges = [
-    EdgeSpec(
-        id="parse-to-search",
-        source="parse-query",
-        target="search-sources",
-        condition=EdgeCondition.ON_SUCCESS,
-        priority=1,
-    ),
-    EdgeSpec(
-        id="search-to-fetch",
-        source="search-sources",
-        target="fetch-content",
-        condition=EdgeCondition.ON_SUCCESS,
-        priority=1,
-    ),
-    EdgeSpec(
-        id="fetch-to-evaluate",
-        source="fetch-content",
-        target="evaluate-sources",
-        condition=EdgeCondition.ON_SUCCESS,
-        priority=1,
-    ),
-    EdgeSpec(
-        id="evaluate-to-synthesize",
-        source="evaluate-sources",
-        target="synthesize-findings",
-        condition=EdgeCondition.ON_SUCCESS,
-        priority=1,
-    ),
-    EdgeSpec(
-        id="synthesize-to-write",
-        source="synthesize-findings",
-        target="write-report",
-        condition=EdgeCondition.ON_SUCCESS,
-        priority=1,
-    ),
-    EdgeSpec(
-        id="write-to-quality",
-        source="write-report",
-        target="quality-check",
-        condition=EdgeCondition.ON_SUCCESS,
-        priority=1,
-    ),
-    EdgeSpec(
-        id="quality-to-save",
-        source="quality-check",
-        target="save-report",
-        condition=EdgeCondition.ON_SUCCESS,
-        priority=1,
-    ),
-]
-
-# Graph configuration
-entry_node = "parse-query"
-entry_points = {"start": "parse-query"}
-pause_nodes = []
-terminal_nodes = ["save-report"]
-
-
-class OnlineResearchAgent:
-    """
-    Online Research Agent - Deep-dive research with narrative reports.
-
-    Uses AgentRuntime for multi-entrypoint support with HITL pause/resume.
-    """
-
-    def __init__(self, config=None):
-        self.config = config or default_config
-        self.goal = goal
-        self.nodes = nodes
-        self.edges = edges
-        self.entry_node = entry_node
-        self.entry_points = entry_points
-        self.pause_nodes = pause_nodes
-        self.terminal_nodes = terminal_nodes
-        self._runtime: AgentRuntime | None = None
-        self._graph: GraphSpec | None = None
-
-    def _build_entry_point_specs(self) -> list[EntryPointSpec]:
-        """Convert entry_points dict to EntryPointSpec list."""
-        specs = []
-        for ep_id, node_id in self.entry_points.items():
-            if ep_id == "start":
-                trigger_type = "manual"
-                name = "Start"
-            elif "_resume" in ep_id:
-                trigger_type = "resume"
-                name = f"Resume from {ep_id.replace('_resume', '')}"
-            else:
-                trigger_type = "manual"
-                name = ep_id.replace("-", " ").title()
-
-            specs.append(
-                EntryPointSpec(
-                    id=ep_id,
-                    name=name,
-                    entry_node=node_id,
-                    trigger_type=trigger_type,
-                    isolation_level="shared",
-                )
-            )
-        return specs
-
-    def _create_runtime(self, mock_mode=False) -> AgentRuntime:
-        """Create AgentRuntime instance."""
-        import json
-        from pathlib import Path
-
-        # Persistent storage in ~/.hive for telemetry and run history
-        storage_path = Path.home() / ".hive" / "online_research_agent"
-        storage_path.mkdir(parents=True, exist_ok=True)
-
-        tool_registry = ToolRegistry()
-
-        # Load MCP servers (always load, needed for tool validation)
-        agent_dir = Path(__file__).parent
-        mcp_config_path = agent_dir / "mcp_servers.json"
-
-        if mcp_config_path.exists():
-            with open(mcp_config_path) as f:
-                mcp_servers = json.load(f)
-
-            for server_config in mcp_servers.get("servers", []):
-                # Resolve relative cwd paths
-                cwd = server_config.get("cwd")
-                if cwd and not Path(cwd).is_absolute():
-                    server_config["cwd"] = str(agent_dir / cwd)
-                tool_registry.register_mcp_server(server_config)
-
-        llm = None
-        if not mock_mode:
-            # LiteLLMProvider uses environment variables for API keys
-            llm = LiteLLMProvider(
-                model=self.config.model,
-                api_key=self.config.api_key,
-                api_base=self.config.api_base,
-            )
-
-        self._graph = GraphSpec(
-            id="online-research-agent-graph",
-            goal_id=self.goal.id,
-            version="1.0.0",
-            entry_node=self.entry_node,
-            entry_points=self.entry_points,
-            terminal_nodes=self.terminal_nodes,
-            pause_nodes=self.pause_nodes,
-            nodes=self.nodes,
-            edges=self.edges,
-            default_model=self.config.model,
-            max_tokens=self.config.max_tokens,
-        )
-
-        # Create AgentRuntime with all entry points
-        self._runtime = create_agent_runtime(
-            graph=self._graph,
-            goal=self.goal,
-            storage_path=storage_path,
-            entry_points=self._build_entry_point_specs(),
-            llm=llm,
-            tools=list(tool_registry.get_tools().values()),
-            tool_executor=tool_registry.get_executor(),
-        )
-
-        return self._runtime
-
-    async def start(self, mock_mode=False) -> None:
-        """Start the agent runtime."""
-        if self._runtime is None:
-            self._create_runtime(mock_mode=mock_mode)
-        await self._runtime.start()
-
-    async def stop(self) -> None:
-        """Stop the agent runtime."""
-        if self._runtime is not None:
-            await self._runtime.stop()
-
-    async def trigger(
-        self,
-        entry_point: str,
-        input_data: dict,
-        correlation_id: str | None = None,
-        session_state: dict | None = None,
-    ) -> str:
-        """
-        Trigger execution at a specific entry point (non-blocking).
-
-        Args:
-            entry_point: Entry point ID (e.g., "start", "pause-node_resume")
-            input_data: Input data for the execution
-            correlation_id: Optional ID to correlate related executions
-            session_state: Optional session state to resume from (with paused_at, memory)
-
-        Returns:
-            Execution ID for tracking
-        """
-        if self._runtime is None or not self._runtime.is_running:
-            raise RuntimeError("Agent runtime not started. Call start() first.")
-        return await self._runtime.trigger(
-            entry_point, input_data, correlation_id, session_state=session_state
-        )
-
-    async def trigger_and_wait(
-        self,
-        entry_point: str,
-        input_data: dict,
-        timeout: float | None = None,
-        session_state: dict | None = None,
-    ) -> ExecutionResult | None:
-        """
-        Trigger execution and wait for completion.
-
-        Args:
-            entry_point: Entry point ID
-            input_data: Input data for the execution
-            timeout: Maximum time to wait (seconds)
-            session_state: Optional session state to resume from (with paused_at, memory)
-
-        Returns:
-            ExecutionResult or None if timeout
-        """
-        if self._runtime is None or not self._runtime.is_running:
-            raise RuntimeError("Agent runtime not started. Call start() first.")
-        return await self._runtime.trigger_and_wait(
-            entry_point, input_data, timeout, session_state=session_state
-        )
-
-    async def run(
-        self, context: dict, mock_mode=False, session_state=None
-    ) -> ExecutionResult:
-        """
-        Run the agent (convenience method for simple single execution).
-
-        For more control, use start() + trigger_and_wait() + stop().
-        """
-        await self.start(mock_mode=mock_mode)
-        try:
-            # Determine entry point based on session_state
-            if session_state and "paused_at" in session_state:
-                paused_node = session_state["paused_at"]
-                resume_key = f"{paused_node}_resume"
-                if resume_key in self.entry_points:
-                    entry_point = resume_key
-                else:
-                    entry_point = "start"
-            else:
-                entry_point = "start"
-
-            result = await self.trigger_and_wait(
-                entry_point, context, session_state=session_state
-            )
-            return result or ExecutionResult(success=False, error="Execution timeout")
-        finally:
-            await self.stop()
-
-    async def get_goal_progress(self) -> dict:
-        """Get goal progress across all executions."""
-        if self._runtime is None:
-            raise RuntimeError("Agent runtime not started")
-        return await self._runtime.get_goal_progress()
-
-    def get_stats(self) -> dict:
-        """Get runtime statistics."""
-        if self._runtime is None:
-            return {"running": False}
-        return self._runtime.get_stats()
-
-    def info(self):
-        """Get agent information."""
-        return {
-            "name": metadata.name,
-            "version": metadata.version,
-            "description": metadata.description,
-            "goal": {
-                "name": self.goal.name,
-                "description": self.goal.description,
-            },
-            "nodes": [n.id for n in self.nodes],
-            "edges": [e.id for e in self.edges],
-            "entry_node": self.entry_node,
-            "entry_points": self.entry_points,
-            "pause_nodes": self.pause_nodes,
-            "terminal_nodes": self.terminal_nodes,
-            "multi_entrypoint": True,
-        }
-
-    def validate(self):
-        """Validate agent structure."""
-        errors = []
-        warnings = []
-
-        node_ids = {node.id for node in self.nodes}
-        for edge in self.edges:
-            if edge.source not in node_ids:
-                errors.append(f"Edge {edge.id}: source '{edge.source}' not found")
-            if edge.target not in node_ids:
-                errors.append(f"Edge {edge.id}: target '{edge.target}' not found")
-
-        if self.entry_node not in node_ids:
-            errors.append(f"Entry node '{self.entry_node}' not found")
-
-        for terminal in self.terminal_nodes:
-            if terminal not in node_ids:
-                errors.append(f"Terminal node '{terminal}' not found")
-
-        for pause in self.pause_nodes:
-            if pause not in node_ids:
-                errors.append(f"Pause node '{pause}' not found")
-
-        # Validate entry points
-        for ep_id, node_id in self.entry_points.items():
-            if node_id not in node_ids:
-                errors.append(
-                    f"Entry point '{ep_id}' references unknown node '{node_id}'"
-                )
-
-        return {
-            "valid": len(errors) == 0,
-            "errors": errors,
-            "warnings": warnings,
-        }
-
-
-# Create default instance
-default_agent = OnlineResearchAgent()

.claude/skills/building-agents-construction/examples/online_research_agent/config.py

@@ -1,43 +0,0 @@
-"""Runtime configuration."""
-
-import json
-from dataclasses import dataclass, field
-from pathlib import Path
-
-
-def _load_preferred_model() -> str:
-    """Load preferred model from ~/.hive/configuration.json."""
-    config_path = Path.home() / ".hive" / "configuration.json"
-    if config_path.exists():
-        try:
-            with open(config_path) as f:
-                config = json.load(f)
-            llm = config.get("llm", {})
-            if llm.get("provider") and llm.get("model"):
-                return f"{llm['provider']}/{llm['model']}"
-        except Exception:
-            pass
-    return "anthropic/claude-sonnet-4-20250514"
-
-
-@dataclass
-class RuntimeConfig:
-    model: str = field(default_factory=_load_preferred_model)
-    temperature: float = 0.7
-    max_tokens: int = 8192
-    api_key: str | None = None
-    api_base: str | None = None
-
-
-default_config = RuntimeConfig()
-
-
-# Agent metadata
-@dataclass
-class AgentMetadata:
-    name: str = "Online Research Agent"
-    version: str = "1.0.0"
-    description: str = "Research any topic by searching multiple sources, synthesizing information, and producing a well-structured narrative report with citations."
-
-
-metadata = AgentMetadata()

.claude/skills/building-agents-construction/examples/online_research_agent/nodes/__init__.py

@@ -1,396 +0,0 @@
-"""Node definitions for Online Research Agent."""
-
-from framework.graph import NodeSpec
-
-# Node 1: Parse Query
-parse_query_node = NodeSpec(
-    id="parse-query",
-    name="Parse Query",
-    description="Analyze the research topic and generate 3-5 diverse search queries to cover different aspects",
-    node_type="llm_generate",
-    input_keys=["topic"],
-    output_keys=["search_queries", "research_focus", "key_aspects"],
-    output_schema={
-        "research_focus": {
-            "type": "string",
-            "required": True,
-            "description": "Brief statement of what we're researching",
-        },
-        "key_aspects": {
-            "type": "array",
-            "required": True,
-            "description": "List of 3-5 key aspects to investigate",
-        },
-        "search_queries": {
-            "type": "array",
-            "required": True,
-            "description": "List of 3-5 search queries",
-        },
-    },
-    system_prompt="""\
-You are a research query strategist. Given a research topic, analyze it and generate search queries.
-
-Your task:
-1. Understand the core research question
-2. Identify 3-5 key aspects to investigate
-3. Generate 3-5 diverse search queries that will find comprehensive information
-
-CRITICAL: Return ONLY raw JSON. NO markdown, NO code blocks.
-
-Return this JSON structure:
-{
-  "research_focus": "Brief statement of what we're researching",
-  "key_aspects": ["aspect1", "aspect2", "aspect3"],
-  "search_queries": [
-    "query 1 - broad overview",
-    "query 2 - specific angle",
-    "query 3 - recent developments",
-    "query 4 - expert opinions",
-    "query 5 - data/statistics"
-  ]
-}
-""",
-    tools=[],
-    max_retries=3,
-)
-
-# Node 2: Search Sources
-search_sources_node = NodeSpec(
-    id="search-sources",
-    name="Search Sources",
-    description="Execute web searches using the generated queries to find 15+ source URLs",
-    node_type="llm_tool_use",
-    input_keys=["search_queries", "research_focus"],
-    output_keys=["source_urls", "search_results_summary"],
-    output_schema={
-        "source_urls": {
-            "type": "array",
-            "required": True,
-            "description": "List of source URLs found",
-        },
-        "search_results_summary": {
-            "type": "string",
-            "required": True,
-            "description": "Brief summary of what was found",
-        },
-    },
-    system_prompt="""\
-You are a research assistant executing web searches. Use the web_search tool to find sources.
-
-Your task:
-1. Execute each search query using web_search tool
-2. Collect URLs from search results
-3. Aim for 15+ diverse sources
-
-After searching, return JSON with found sources:
-{
-  "source_urls": ["url1", "url2", ...],
-  "search_results_summary": "Brief summary of what was found"
-}
-""",
-    tools=["web_search"],
-    max_retries=3,
-)
-
-# Node 3: Fetch Content
-fetch_content_node = NodeSpec(
-    id="fetch-content",
-    name="Fetch Content",
-    description="Fetch and extract content from the discovered source URLs",
-    node_type="llm_tool_use",
-    input_keys=["source_urls", "research_focus"],
-    output_keys=["fetched_sources", "fetch_errors"],
-    output_schema={
-        "fetched_sources": {
-            "type": "array",
-            "required": True,
-            "description": "List of fetched source objects with url, title, content",
-        },
-        "fetch_errors": {
-            "type": "array",
-            "required": True,
-            "description": "List of URLs that failed to fetch",
-        },
-    },
-    system_prompt="""\
-You are a content fetcher. Use web_scrape tool to retrieve content from URLs.
-
-Your task:
-1. Fetch content from each source URL using web_scrape tool
-2. Extract the main content relevant to the research focus
-3. Track any URLs that failed to fetch
-
-After fetching, return JSON:
-{
-  "fetched_sources": [
-    {"url": "...", "title": "...", "content": "extracted text..."},
-    ...
-  ],
-  "fetch_errors": ["url that failed", ...]
-}
-""",
-    tools=["web_scrape"],
-    max_retries=3,
-)
-
-# Node 4: Evaluate Sources
-evaluate_sources_node = NodeSpec(
-    id="evaluate-sources",
-    name="Evaluate Sources",
-    description="Score sources for relevance and quality, filter to top 10",
-    node_type="llm_generate",
-    input_keys=["fetched_sources", "research_focus", "key_aspects"],
-    output_keys=["ranked_sources", "source_analysis"],
-    output_schema={
-        "ranked_sources": {
-            "type": "array",
-            "required": True,
-            "description": "List of ranked sources with scores",
-        },
-        "source_analysis": {
-            "type": "string",
-            "required": True,
-            "description": "Overview of source quality and coverage",
-        },
-    },
-    system_prompt="""\
-You are a source evaluator. Assess each source for quality and relevance.
-
-Scoring criteria:
-- Relevance to research focus (1-10)
-- Source credibility (1-10)
-- Information depth (1-10)
-- Recency if relevant (1-10)
-
-Your task:
-1. Score each source
-2. Rank by combined score
-3. Select top 10 sources
-4. Note what each source uniquely contributes
-
-Return JSON:
-{
-  "ranked_sources": [
-    {"url": "...", "title": "...", "content": "...", "score": 8.5, "unique_value": "..."},
-    ...
-  ],
-  "source_analysis": "Overview of source quality and coverage"
-}
-""",
-    tools=[],
-    max_retries=3,
-)
-
-# Node 5: Synthesize Findings
-synthesize_findings_node = NodeSpec(
-    id="synthesize-findings",
-    name="Synthesize Findings",
-    description="Extract key facts from sources and identify common themes",
-    node_type="llm_generate",
-    input_keys=["ranked_sources", "research_focus", "key_aspects"],
-    output_keys=["key_findings", "themes", "source_citations"],
-    output_schema={
-        "key_findings": {
-            "type": "array",
-            "required": True,
-            "description": "List of key findings with sources and confidence",
-        },
-        "themes": {
-            "type": "array",
-            "required": True,
-            "description": "List of themes with descriptions and supporting sources",
-        },
-        "source_citations": {
-            "type": "object",
-            "required": True,
-            "description": "Map of facts to supporting URLs",
-        },
-    },
-    system_prompt="""\
-You are a research synthesizer. Analyze multiple sources to extract insights.
-
-Your task:
-1. Identify key facts from each source
-2. Find common themes across sources
-3. Note contradictions or debates
-4. Build a citation map (fact -> source URL)
-
-Return JSON:
-{
-  "key_findings": [
-    {"finding": "...", "sources": ["url1", "url2"], "confidence": "high/medium/low"},
-    ...
-  ],
-  "themes": [
-    {"theme": "...", "description": "...", "supporting_sources": ["url1", ...]},
-    ...
-  ],
-  "source_citations": {
-    "fact or claim": ["supporting url1", "url2"],
-    ...
-  }
-}
-""",
-    tools=[],
-    max_retries=3,
-)
-
-# Node 6: Write Report
-write_report_node = NodeSpec(
-    id="write-report",
-    name="Write Report",
-    description="Generate a narrative report with proper citations",
-    node_type="llm_generate",
-    input_keys=[
-        "key_findings",
-        "themes",
-        "source_citations",
-        "research_focus",
-        "ranked_sources",
-    ],
-    output_keys=["report_content", "references"],
-    output_schema={
-        "report_content": {
-            "type": "string",
-            "required": True,
-            "description": "Full markdown report text with citations",
-        },
-        "references": {
-            "type": "array",
-            "required": True,
-            "description": "List of reference objects with number, url, title",
-        },
-    },
-    system_prompt="""\
-You are a research report writer. Create a well-structured narrative report.
-
-Report structure:
-1. Executive Summary (2-3 paragraphs)
-2. Introduction (context and scope)
-3. Key Findings (organized by theme)
-4. Analysis (synthesis and implications)
-5. Conclusion
-6. References (numbered list of all sources)
-
-Citation format: Use numbered citations like [1], [2] that correspond to the References section.
-
-IMPORTANT:
-- Every factual claim MUST have a citation
-- Write in clear, professional prose
-- Be objective and balanced
-- Highlight areas of consensus and debate
-
-Return JSON:
-{
-  "report_content": "Full markdown report text with citations...",
-  "references": [
-    {"number": 1, "url": "...", "title": "..."},
-    ...
-  ]
-}
-""",
-    tools=[],
-    max_retries=3,
-)
-
-# Node 7: Quality Check
-quality_check_node = NodeSpec(
-    id="quality-check",
-    name="Quality Check",
-    description="Verify all claims have citations and report is coherent",
-    node_type="llm_generate",
-    input_keys=["report_content", "references", "source_citations"],
-    output_keys=["quality_score", "issues", "final_report"],
-    output_schema={
-        "quality_score": {
-            "type": "number",
-            "required": True,
-            "description": "Quality score 0-1",
-        },
-        "issues": {
-            "type": "array",
-            "required": True,
-            "description": "List of issues found and fixed",
-        },
-        "final_report": {
-            "type": "string",
-            "required": True,
-            "description": "Corrected full report",
-        },
-    },
-    system_prompt="""\
-You are a quality assurance reviewer. Check the research report for issues.
-
-Check for:
-1. Uncited claims (factual statements without [n] citation)
-2. Broken citations (references to non-existent numbers)
-3. Coherence (logical flow between sections)
-4. Completeness (all key aspects covered)
-5. Accuracy (claims match source content)
-
-If issues found, fix them in the final report.
-
-Return JSON:
-{
-  "quality_score": 0.95,
-  "issues": [
-    {"type": "uncited_claim", "location": "paragraph 3", "fixed": true},
-    ...
-  ],
-  "final_report": "Corrected full report with all issues fixed..."
-}
-""",
-    tools=[],
-    max_retries=3,
-)
-
-# Node 8: Save Report
-save_report_node = NodeSpec(
-    id="save-report",
-    name="Save Report",
-    description="Write the final report to a local markdown file",
-    node_type="llm_tool_use",
-    input_keys=["final_report", "references", "research_focus"],
-    output_keys=["file_path", "save_status"],
-    output_schema={
-        "file_path": {
-            "type": "string",
-            "required": True,
-            "description": "Path where report was saved",
-        },
-        "save_status": {
-            "type": "string",
-            "required": True,
-            "description": "Status of save operation",
-        },
-    },
-    system_prompt="""\
-You are a file manager. Save the research report to disk.
-
-Your task:
-1. Generate a filename from the research focus (slugified, with date)
-2. Use the write_to_file tool to save the report as markdown
-3. Save to the ./research_reports/ directory
-
-Filename format: research_YYYY-MM-DD_topic-slug.md
-
-Return JSON:
-{
-  "file_path": "research_reports/research_2026-01-23_topic-name.md",
-  "save_status": "success"
-}
-""",
-    tools=["write_to_file"],
-    max_retries=3,
-)
-
-__all__ = [
-    "parse_query_node",
-    "search_sources_node",
-    "fetch_content_node",
-    "evaluate_sources_node",
-    "synthesize_findings_node",
-    "write_report_node",
-    "quality_check_node",
-    "save_report_node",
-]

.claude/skills/building-agents-core/SKILL.md

@@ -1,303 +0,0 @@
----
-name: building-agents-core
-description: Core concepts for goal-driven agents - architecture, node types, tool discovery, and workflow overview. Use when starting agent development or need to understand agent fundamentals.
-license: Apache-2.0
-metadata:
-  author: hive
-  version: "1.0"
-  type: foundational
-  part_of: building-agents
----
-
-# Building Agents - Core Concepts
-
-Foundational knowledge for building goal-driven agents as Python packages.
-
-## Architecture: Python Services (Not JSON Configs)
-
-Agents are built as Python packages:
-
-```
-exports/my_agent/
-├── __init__.py          # Package exports
-├── __main__.py          # CLI (run, info, validate, shell)
-├── agent.py             # Graph construction (goal, edges, agent class)
-├── nodes/__init__.py    # Node definitions (NodeSpec)
-├── config.py            # Runtime config
-└── README.md            # Documentation
-```
-
-**Key Principle: Agent is visible and editable during build**
-
-- ✅ Files created immediately as components are approved
-- ✅ User can watch files grow in their editor
-- ✅ No session state - just direct file writes
-- ✅ No "export" step - agent is ready when build completes
-
-## Core Concepts
-
-### Goal
-
-Success criteria and constraints (written to agent.py)
-
-```python
-goal = Goal(
-    id="research-goal",
-    name="Technical Research Agent",
-    description="Research technical topics thoroughly",
-    success_criteria=[
-        SuccessCriterion(
-            id="completeness",
-            description="Cover all aspects of topic",
-            metric="coverage_score",
-            target=">=0.9",
-            weight=0.4,
-        ),
-        # 3-5 success criteria total
-    ],
-    constraints=[
-        Constraint(
-            id="accuracy",
-            description="All information must be verified",
-            constraint_type="hard",
-            category="quality",
-        ),
-        # 1-5 constraints total
-    ],
-)
-```
-
-### Node
-
-Unit of work (written to nodes/__init__.py)
-
-**Node Types:**
-
-- `llm_generate` - Text generation, parsing
-- `llm_tool_use` - Actions requiring tools
-- `router` - Conditional branching
-- `function` - Deterministic operations
-
-```python
-search_node = NodeSpec(
-    id="search-web",
-    name="Search Web",
-    description="Search for information online",
-    node_type="llm_tool_use",
-    input_keys=["query"],
-    output_keys=["search_results"],
-    system_prompt="Search the web for: {query}",
-    tools=["web_search"],
-    max_retries=3,
-)
-```
-
-### Edge
-
-Connection between nodes (written to agent.py)
-
-**Edge Conditions:**
-
-- `on_success` - Proceed if node succeeds
-- `on_failure` - Handle errors
-- `always` - Always proceed
-- `conditional` - Based on expression
-
-```python
-EdgeSpec(
-    id="search-to-analyze",
-    source="search-web",
-    target="analyze-results",
-    condition=EdgeCondition.ON_SUCCESS,
-    priority=1,
-)
-```
-
-### Pause/Resume
-
-Multi-turn conversations
-
-- **Pause nodes** - Stop execution, wait for user input
-- **Resume entry points** - Continue from pause with user's response
-
-```python
-# Example pause/resume configuration
-pause_nodes = ["request-clarification"]
-entry_points = {
-    "start": "analyze-request",
-    "request-clarification_resume": "process-clarification"
-}
-```
-
-## Tool Discovery & Validation
-
-**CRITICAL:** Before adding a node with tools, you MUST verify the tools exist.
-
-Tools are provided by MCP servers. Never assume a tool exists - always discover dynamically.
-
-### Step 1: Register MCP Server (if not already done)
-
-```python
-mcp__agent-builder__add_mcp_server(
-    name="tools",
-    transport="stdio",
-    command="python",
-    args='["mcp_server.py", "--stdio"]',
-    cwd="../tools"
-)
-```
-
-### Step 2: Discover Available Tools
-
-```python
-# List all tools from all registered servers
-mcp__agent-builder__list_mcp_tools()
-
-# Or list tools from a specific server
-mcp__agent-builder__list_mcp_tools(server_name="tools")
-```
-
-This returns available tools with their descriptions and parameters:
-
-```json
-{
-  "success": true,
-  "tools_by_server": {
-    "tools": [
-      {
-        "name": "web_search",
-        "description": "Search the web...",
-        "parameters": ["query"]
-      },
-      {
-        "name": "web_scrape",
-        "description": "Scrape a URL...",
-        "parameters": ["url"]
-      }
-    ]
-  },
-  "total_tools": 14
-}
-```
-
-### Step 3: Validate Before Adding Nodes
-
-Before writing a node with `tools=[...]`:
-
-1. Call `list_mcp_tools()` to get available tools
-2. Check each tool in your node exists in the response
-3. If a tool doesn't exist:
-   - **DO NOT proceed** with the node
-   - Inform the user: "The tool 'X' is not available. Available tools are: ..."
-   - Ask if they want to use an alternative or proceed without the tool
-
-### Tool Validation Anti-Patterns
-
-❌ **Never assume a tool exists** - always call `list_mcp_tools()` first
-❌ **Never write a node with unverified tools** - validate before writing
-❌ **Never silently drop tools** - if a tool doesn't exist, inform the user
-❌ **Never guess tool names** - use exact names from discovery response
-
-### Example Validation Flow
-
-```python
-# 1. User requests: "Add a node that searches the web"
-# 2. Discover available tools
-tools_response = mcp__agent-builder__list_mcp_tools()
-
-# 3. Check if web_search exists
-available = [t["name"] for tools in tools_response["tools_by_server"].values() for t in tools]
-if "web_search" not in available:
-    # Inform user and ask how to proceed
-    print("❌ 'web_search' not available. Available tools:", available)
-else:
-    # Proceed with node creation
-    # ...
-```
-
-## Workflow Overview: Incremental File Construction
-
-```
-1. CREATE PACKAGE → mkdir + write skeletons
-2. DEFINE GOAL → Write to agent.py + config.py
-3. FOR EACH NODE:
-   - Propose design
-   - User approves
-   - Write to nodes/__init__.py IMMEDIATELY ← FILE WRITTEN
-   - (Optional) Validate with test_node ← MCP VALIDATION
-   - User can open file and see it
-4. CONNECT EDGES → Update agent.py ← FILE WRITTEN
-   - (Optional) Validate with validate_graph ← MCP VALIDATION
-5. FINALIZE → Write agent class to agent.py ← FILE WRITTEN
-6. DONE - Agent ready at exports/my_agent/
-```
-
-**Files written immediately. MCP tools optional for validation/testing bookkeeping.**
-
-### The Key Difference
-
-**OLD (Bad):**
-
-```
-MCP add_node → Session State → MCP add_node → Session State → ...
-                                                                ↓
-                                                     MCP export_graph
-                                                                ↓
-                                                       Files appear
-```
-
-**NEW (Good):**
-
-```
-Write node to file → (Optional: MCP test_node) → Write node to file → ...
-       ↓                                               ↓
-  File visible                                    File visible
-  immediately                                     immediately
-```
-
-**Bottom line:** Use Write/Edit for construction, MCP for validation if needed.
-
-## When to Use This Skill
-
-Use building-agents-core when:
-- Starting a new agent project and need to understand fundamentals
-- Need to understand agent architecture before building
-- Want to validate tool availability before proceeding
-- Learning about node types, edges, and graph execution
-
-**Next Steps:**
-- Ready to build? → Use `building-agents-construction` skill
-- Need patterns and examples? → Use `building-agents-patterns` skill
-
-## MCP Tools for Validation
-
-After writing files, optionally use MCP tools for validation:
-
-**test_node** - Validate node configuration with mock inputs
-```python
-mcp__agent-builder__test_node(
-    node_id="search-web",
-    test_input='{"query": "test query"}',
-    mock_llm_response='{"results": "mock output"}'
-)
-```
-
-**validate_graph** - Check graph structure
-```python
-mcp__agent-builder__validate_graph()
-# Returns: unreachable nodes, missing connections, etc.
-```
-
-**create_session** - Track session state for bookkeeping
-```python
-mcp__agent-builder__create_session(session_name="my-build")
-```
-
-**Key Point:** Files are written FIRST. MCP tools are for validation only.
-
-## Related Skills
-
-- **building-agents-construction** - Step-by-step building process
-- **building-agents-patterns** - Best practices and examples
-- **agent-workflow** - Complete workflow orchestrator
-- **testing-agent** - Test and validate completed agents

.claude/skills/building-agents-patterns/SKILL.md

@@ -1,497 +0,0 @@
----
-name: building-agents-patterns
-description: Best practices, patterns, and examples for building goal-driven agents. Includes pause/resume architecture, hybrid workflows, anti-patterns, and handoff to testing. Use when optimizing agent design.
-license: Apache-2.0
-metadata:
-  author: hive
-  version: "1.0"
-  type: reference
-  part_of: building-agents
----
-
-# Building Agents - Patterns & Best Practices
-
-Design patterns, examples, and best practices for building robust goal-driven agents.
-
-**Prerequisites:** Complete agent structure using `building-agents-construction`.
-
-## Practical Example: Hybrid Workflow
-
-How to build a node using both direct file writes and optional MCP validation:
-
-```python
-# 1. WRITE TO FILE FIRST (Primary - makes it visible)
-node_code = '''
-search_node = NodeSpec(
-    id="search-web",
-    node_type="llm_tool_use",
-    input_keys=["query"],
-    output_keys=["search_results"],
-    system_prompt="Search the web for: {query}",
-    tools=["web_search"],
-)
-'''
-
-Edit(
-    file_path="exports/research_agent/nodes/__init__.py",
-    old_string="# Nodes will be added here",
-    new_string=node_code
-)
-
-print("✅ Added search_node to nodes/__init__.py")
-print("📁 Open exports/research_agent/nodes/__init__.py to see it!")
-
-# 2. OPTIONALLY VALIDATE WITH MCP (Secondary - bookkeeping)
-validation = mcp__agent-builder__test_node(
-    node_id="search-web",
-    test_input='{"query": "python tutorials"}',
-    mock_llm_response='{"search_results": [...mock results...]}'
-)
-
-print(f"✓ Validation: {validation['success']}")
-```
-
-**User experience:**
-
-- Immediately sees node in their editor (from step 1)
-- Gets validation feedback (from step 2)
-- Can edit the file directly if needed
-
-This combines visibility (files) with validation (MCP tools).
-
-## Pause/Resume Architecture
-
-For agents needing multi-turn conversations with user interaction:
-
-### Basic Pause/Resume Flow
-
-```python
-# Define pause nodes - execution stops at these nodes
-pause_nodes = ["request-clarification", "await-approval"]
-
-# Define entry points - where to resume from each pause
-entry_points = {
-    "start": "analyze-request",  # Initial entry
-    "request-clarification_resume": "process-clarification",  # Resume from clarification
-    "await-approval_resume": "execute-action",  # Resume from approval
-}
-```
-
-### Example: Multi-Turn Research Agent
-
-```python
-# Nodes
-nodes = [
-    NodeSpec(id="analyze-request", ...),
-    NodeSpec(id="request-clarification", ...),  # PAUSE NODE
-    NodeSpec(id="process-clarification", ...),
-    NodeSpec(id="generate-results", ...),
-    NodeSpec(id="await-approval", ...),  # PAUSE NODE
-    NodeSpec(id="execute-action", ...),
-]
-
-# Edges with resume flows
-edges = [
-    EdgeSpec(
-        id="analyze-to-clarify",
-        source="analyze-request",
-        target="request-clarification",
-        condition=EdgeCondition.CONDITIONAL,
-        condition_expr="needs_clarification == true",
-    ),
-    # When resumed, goes to process-clarification
-    EdgeSpec(
-        id="clarify-to-process",
-        source="request-clarification",
-        target="process-clarification",
-        condition=EdgeCondition.ALWAYS,
-    ),
-    EdgeSpec(
-        id="results-to-approval",
-        source="generate-results",
-        target="await-approval",
-        condition=EdgeCondition.ALWAYS,
-    ),
-    # When resumed, goes to execute-action
-    EdgeSpec(
-        id="approval-to-execute",
-        source="await-approval",
-        target="execute-action",
-        condition=EdgeCondition.ALWAYS,
-    ),
-]
-
-# Configuration
-pause_nodes = ["request-clarification", "await-approval"]
-entry_points = {
-    "start": "analyze-request",
-    "request-clarification_resume": "process-clarification",
-    "await-approval_resume": "execute-action",
-}
-```
-
-### Running Pause/Resume Agents
-
-```python
-# Initial run - will pause at first pause node
-result1 = await agent.run(
-    context={"query": "research topic"},
-    session_state=None
-)
-
-# Check if paused
-if result1.paused_at:
-    print(f"Paused at: {result1.paused_at}")
-
-    # Resume with user input
-    result2 = await agent.run(
-        context={"user_response": "clarification details"},
-        session_state=result1.session_state  # Pass previous state
-    )
-```
-
-## Anti-Patterns
-
-### What NOT to Do
-
-❌ **Don't rely on `export_graph`** - Write files immediately, not at end
-```python
-# BAD: Building in session state, exporting at end
-mcp__agent-builder__add_node(...)
-mcp__agent-builder__add_node(...)
-mcp__agent-builder__export_graph()  # Files appear only now
-
-# GOOD: Writing files immediately
-Write(file_path="...", content=node_code)  # File visible now
-Write(file_path="...", content=node_code)  # File visible now
-```
-
-❌ **Don't hide code in session** - Write to files as components approved
-```python
-# BAD: Accumulating changes invisibly
-session.add_component(component1)
-session.add_component(component2)
-# User can't see anything yet
-
-# GOOD: Incremental visibility
-Edit(file_path="...", ...)  # User sees change 1
-Edit(file_path="...", ...)  # User sees change 2
-```
-
-❌ **Don't wait to write files** - Agent visible from first step
-```python
-# BAD: Building everything before writing
-design_all_nodes()
-design_all_edges()
-write_everything_at_once()
-
-# GOOD: Write as you go
-write_package_structure()  # Visible
-write_goal()  # Visible
-write_node_1()  # Visible
-write_node_2()  # Visible
-```
-
-❌ **Don't batch everything** - Write incrementally
-```python
-# BAD: Batching all nodes
-nodes = [design_node_1(), design_node_2(), ...]
-write_all_nodes(nodes)
-
-# GOOD: One at a time with user feedback
-write_node_1()  # User approves
-write_node_2()  # User approves
-write_node_3()  # User approves
-```
-
-### MCP Tools - Correct Usage
-
-**MCP tools OK for:**
-✅ `test_node` - Validate node configuration with mock inputs
-✅ `validate_graph` - Check graph structure
-✅ `create_session` - Track session state for bookkeeping
-✅ Other validation tools
-
-**Just don't:** Use MCP as the primary construction method or rely on export_graph
-
-## Best Practices
-
-### 1. Show Progress After Each Write
-
-```python
-# After writing a node
-print("✅ Added analyze_request_node to nodes/__init__.py")
-print("📊 Progress: 1/6 nodes added")
-print("📁 Open exports/my_agent/nodes/__init__.py to see it!")
-```
-
-### 2. Let User Open Files During Build
-
-```python
-# Encourage file inspection
-print("✅ Goal written to agent.py")
-print("")
-print("💡 Tip: Open exports/my_agent/agent.py in your editor to see the goal!")
-```
-
-### 3. Write Incrementally - One Component at a Time
-
-```python
-# Good flow
-write_package_structure()
-show_user("Package created")
-
-write_goal()
-show_user("Goal written")
-
-for node in nodes:
-    get_approval(node)
-    write_node(node)
-    show_user(f"Node {node.id} written")
-```
-
-### 4. Test As You Build
-
-```python
-# After adding several nodes
-print("💡 You can test current state with:")
-print("  PYTHONPATH=core:exports python -m my_agent validate")
-print("  PYTHONPATH=core:exports python -m my_agent info")
-```
-
-### 5. Keep User Informed
-
-```python
-# Clear status updates
-print("🔨 Creating package structure...")
-print("✅ Package created: exports/my_agent/")
-print("")
-print("📝 Next: Define agent goal")
-```
-
-## Continuous Monitoring Agents
-
-For agents that run continuously without terminal nodes:
-
-```python
-# No terminal nodes - loops forever
-terminal_nodes = []
-
-# Workflow loops back to start
-edges = [
-    EdgeSpec(id="monitor-to-check", source="monitor", target="check-condition"),
-    EdgeSpec(id="check-to-wait", source="check-condition", target="wait"),
-    EdgeSpec(id="wait-to-monitor", source="wait", target="monitor"),  # Loop
-]
-
-# Entry node only
-entry_node = "monitor"
-entry_points = {"start": "monitor"}
-pause_nodes = []
-```
-
-**Example: File Monitor**
-
-```python
-nodes = [
-    NodeSpec(id="list-files", ...),
-    NodeSpec(id="check-new-files", node_type="router", ...),
-    NodeSpec(id="process-files", ...),
-    NodeSpec(id="wait-interval", node_type="function", ...),
-]
-
-edges = [
-    EdgeSpec(id="list-to-check", source="list-files", target="check-new-files"),
-    EdgeSpec(
-        id="check-to-process",
-        source="check-new-files",
-        target="process-files",
-        condition=EdgeCondition.CONDITIONAL,
-        condition_expr="new_files_count > 0",
-    ),
-    EdgeSpec(
-        id="check-to-wait",
-        source="check-new-files",
-        target="wait-interval",
-        condition=EdgeCondition.CONDITIONAL,
-        condition_expr="new_files_count == 0",
-    ),
-    EdgeSpec(id="process-to-wait", source="process-files", target="wait-interval"),
-    EdgeSpec(id="wait-to-list", source="wait-interval", target="list-files"),  # Loop back
-]
-
-terminal_nodes = []  # No terminal - runs forever
-```
-
-## Complex Routing Patterns
-
-### Multi-Condition Router
-
-```python
-router_node = NodeSpec(
-    id="decision-router",
-    node_type="router",
-    input_keys=["analysis_result"],
-    output_keys=["decision"],
-    system_prompt="""
-    Based on the analysis result, decide the next action:
-    - If confidence > 0.9: route to "execute"
-    - If 0.5 <= confidence <= 0.9: route to "review"
-    - If confidence < 0.5: route to "clarify"
-
-    Return: {"decision": "execute|review|clarify"}
-    """,
-)
-
-# Edges for each route
-edges = [
-    EdgeSpec(
-        id="router-to-execute",
-        source="decision-router",
-        target="execute-action",
-        condition=EdgeCondition.CONDITIONAL,
-        condition_expr="decision == 'execute'",
-        priority=1,
-    ),
-    EdgeSpec(
-        id="router-to-review",
-        source="decision-router",
-        target="human-review",
-        condition=EdgeCondition.CONDITIONAL,
-        condition_expr="decision == 'review'",
-        priority=2,
-    ),
-    EdgeSpec(
-        id="router-to-clarify",
-        source="decision-router",
-        target="request-clarification",
-        condition=EdgeCondition.CONDITIONAL,
-        condition_expr="decision == 'clarify'",
-        priority=3,
-    ),
-]
-```
-
-## Error Handling Patterns
-
-### Graceful Failure with Fallback
-
-```python
-# Primary node with error handling
-nodes = [
-    NodeSpec(id="api-call", max_retries=3, ...),
-    NodeSpec(id="fallback-cache", ...),
-    NodeSpec(id="report-error", ...),
-]
-
-edges = [
-    # Success path
-    EdgeSpec(
-        id="api-success",
-        source="api-call",
-        target="process-results",
-        condition=EdgeCondition.ON_SUCCESS,
-    ),
-    # Fallback on failure
-    EdgeSpec(
-        id="api-to-fallback",
-        source="api-call",
-        target="fallback-cache",
-        condition=EdgeCondition.ON_FAILURE,
-        priority=1,
-    ),
-    # Report if fallback also fails
-    EdgeSpec(
-        id="fallback-to-error",
-        source="fallback-cache",
-        target="report-error",
-        condition=EdgeCondition.ON_FAILURE,
-        priority=1,
-    ),
-]
-```
-
-## Performance Optimization
-
-### Parallel Node Execution
-
-```python
-# Use multiple edges from same source for parallel execution
-edges = [
-    EdgeSpec(
-        id="start-to-search1",
-        source="start",
-        target="search-source-1",
-        condition=EdgeCondition.ALWAYS,
-    ),
-    EdgeSpec(
-        id="start-to-search2",
-        source="start",
-        target="search-source-2",
-        condition=EdgeCondition.ALWAYS,
-    ),
-    EdgeSpec(
-        id="start-to-search3",
-        source="start",
-        target="search-source-3",
-        condition=EdgeCondition.ALWAYS,
-    ),
-    # Converge results
-    EdgeSpec(
-        id="search1-to-merge",
-        source="search-source-1",
-        target="merge-results",
-    ),
-    EdgeSpec(
-        id="search2-to-merge",
-        source="search-source-2",
-        target="merge-results",
-    ),
-    EdgeSpec(
-        id="search3-to-merge",
-        source="search-source-3",
-        target="merge-results",
-    ),
-]
-```
-
-## Handoff to Testing
-
-When agent is complete, transition to testing phase:
-
-```python
-print("""
-✅ Agent complete: exports/my_agent/
-
-Next steps:
-1. Switch to testing-agent skill
-2. Generate and approve tests
-3. Run evaluation
-4. Debug any failures
-
-Command: "Test the agent at exports/my_agent/"
-""")
-```
-
-### Pre-Testing Checklist
-
-Before handing off to testing-agent:
-
-- [ ] Agent structure validates: `python -m agent_name validate`
-- [ ] All nodes defined in nodes/__init__.py
-- [ ] All edges connect valid nodes
-- [ ] Entry node specified
-- [ ] Agent can be imported: `from exports.agent_name import default_agent`
-- [ ] README.md with usage instructions
-- [ ] CLI commands work (info, validate)
-
-## Related Skills
-
-- **building-agents-core** - Fundamental concepts
-- **building-agents-construction** - Step-by-step building
-- **testing-agent** - Test and validate agents
-- **agent-workflow** - Complete workflow orchestrator
-
----
-
-**Remember: Agent is actively constructed, visible the whole time. No hidden state. No surprise exports. Just transparent, incremental file building.**

.claude/skills/hive-concepts/SKILL.md

@@ -0,0 +1,399 @@
+---
+name: hive-concepts
+description: Core concepts for goal-driven agents - architecture, node types (event_loop, function), tool discovery, and workflow overview. Use when starting agent development or need to understand agent fundamentals.
+license: Apache-2.0
+metadata:
+  author: hive
+  version: "2.0"
+  type: foundational
+  part_of: hive
+---
+
+# Building Agents - Core Concepts
+
+Foundational knowledge for building goal-driven agents as Python packages.
+
+## Architecture: Python Services (Not JSON Configs)
+
+Agents are built as Python packages:
+
+```
+exports/my_agent/
+├── __init__.py          # Package exports
+├── __main__.py          # CLI (run, info, validate, shell)
+├── agent.py             # Graph construction (goal, edges, agent class)
+├── nodes/__init__.py    # Node definitions (NodeSpec)
+├── config.py            # Runtime config
+└── README.md            # Documentation
+```
+
+**Key Principle: Agent is visible and editable during build**
+
+- Files created immediately as components are approved
+- User can watch files grow in their editor
+- No session state - just direct file writes
+- No "export" step - agent is ready when build completes
+
+## Core Concepts
+
+### Goal
+
+Success criteria and constraints (written to agent.py)
+
+```python
+goal = Goal(
+    id="research-goal",
+    name="Technical Research Agent",
+    description="Research technical topics thoroughly",
+    success_criteria=[
+        SuccessCriterion(
+            id="completeness",
+            description="Cover all aspects of topic",
+            metric="coverage_score",
+            target=">=0.9",
+            weight=0.4,
+        ),
+        # 3-5 success criteria total
+    ],
+    constraints=[
+        Constraint(
+            id="accuracy",
+            description="All information must be verified",
+            constraint_type="hard",
+            category="quality",
+        ),
+        # 1-5 constraints total
+    ],
+)
+```
+
+### Node
+
+Unit of work (written to nodes/__init__.py)
+
+**Node Types:**
+
+- `event_loop` — Multi-turn streaming loop with tool execution and judge-based evaluation. Works with or without tools.
+- `function` — Deterministic Python operations. No LLM involved.
+
+```python
+search_node = NodeSpec(
+    id="search-web",
+    name="Search Web",
+    description="Search for information and extract results",
+    node_type="event_loop",
+    input_keys=["query"],
+    output_keys=["search_results"],
+    system_prompt="Search the web for: {query}. Use the web_search tool to find results, then call set_output to store them.",
+    tools=["web_search"],
+)
+```
+
+**NodeSpec Fields for Event Loop Nodes:**
+
+| Field | Default | Description |
+|-------|---------|-------------|
+| `client_facing` | `False` | If True, streams output to user and blocks for input between turns |
+| `nullable_output_keys` | `[]` | Output keys that may remain unset (for mutually exclusive outputs) |
+| `max_node_visits` | `1` | Max times this node executes per run. Set >1 for feedback loop targets |
+
+### Edge
+
+Connection between nodes (written to agent.py)
+
+**Edge Conditions:**
+
+- `on_success` — Proceed if node succeeds (most common)
+- `on_failure` — Handle errors
+- `always` — Always proceed
+- `conditional` — Based on expression evaluating node output
+
+**Edge Priority:**
+
+Priority controls evaluation order when multiple edges leave the same node. Higher priority edges are evaluated first. Use negative priority for feedback edges (edges that loop back to earlier nodes).
+
+```python
+# Forward edge (evaluated first)
+EdgeSpec(
+    id="review-to-campaign",
+    source="review",
+    target="campaign-builder",
+    condition=EdgeCondition.CONDITIONAL,
+    condition_expr="output.get('approved_contacts') is not None",
+    priority=1,
+)
+
+# Feedback edge (evaluated after forward edges)
+EdgeSpec(
+    id="review-feedback",
+    source="review",
+    target="extractor",
+    condition=EdgeCondition.CONDITIONAL,
+    condition_expr="output.get('redo_extraction') is not None",
+    priority=-1,
+)
+```
+
+### Client-Facing Nodes
+
+For multi-turn conversations with the user, set `client_facing=True` on a node. The node will:
+- Stream its LLM output directly to the end user
+- Block for user input between conversational turns
+- Resume when new input is injected via `inject_event()`
+
+```python
+intake_node = NodeSpec(
+    id="intake",
+    name="Intake",
+    description="Gather requirements from the user",
+    node_type="event_loop",
+    client_facing=True,
+    input_keys=[],
+    output_keys=["repo_url", "project_url"],
+    system_prompt="You are the intake agent. Ask the user for the repo URL and project URL.",
+)
+```
+
+> **Legacy Note:** The old `pause_nodes` / `entry_points` pattern still works but `client_facing=True` is preferred for new agents.
+
+**STEP 1 / STEP 2 Prompt Pattern:** For client-facing nodes, structure the system prompt with two explicit phases:
+
+```python
+system_prompt="""\
+**STEP 1 — Respond to the user (text only, NO tool calls):**
+[Present information, ask questions, etc.]
+
+**STEP 2 — After the user responds, call set_output:**
+[Call set_output with the structured outputs]
+"""
+```
+
+This prevents the LLM from calling `set_output` prematurely before the user has had a chance to respond.
+
+### Node Design: Fewer, Richer Nodes
+
+Prefer fewer nodes that do more work over many thin single-purpose nodes:
+
+- **Bad**: 8 thin nodes (parse query → search → fetch → evaluate → synthesize → write → check → save)
+- **Good**: 4 rich nodes (intake → research → review → report)
+
+Why: Each node boundary requires serializing outputs and passing context. Fewer nodes means the LLM retains full context of its work within the node. A research node that searches, fetches, and analyzes keeps all the source material in its conversation history.
+
+### nullable_output_keys for Cross-Edge Inputs
+
+When a node receives inputs that only arrive on certain edges (e.g., `feedback` only comes from a review → research feedback loop, not from intake → research), mark those keys as `nullable_output_keys`:
+
+```python
+research_node = NodeSpec(
+    id="research",
+    input_keys=["research_brief", "feedback"],
+    nullable_output_keys=["feedback"],  # Not present on first visit
+    max_node_visits=3,
+    ...
+)
+```
+
+## Event Loop Architecture Concepts
+
+### How EventLoopNode Works
+
+An event loop node runs a multi-turn loop:
+1. LLM receives system prompt + conversation history
+2. LLM responds (text and/or tool calls)
+3. Tool calls are executed, results added to conversation
+4. Judge evaluates: ACCEPT (exit loop), RETRY (loop again), or ESCALATE
+5. Repeat until judge ACCEPTs or max_iterations reached
+
+### EventLoopNode Runtime
+
+EventLoopNodes are **auto-created** by `GraphExecutor` at runtime. You do NOT need to manually register them. Both `GraphExecutor` (direct) and `AgentRuntime` / `create_agent_runtime()` handle event_loop nodes automatically.
+
+```python
+# Direct execution — executor auto-creates EventLoopNodes
+from framework.graph.executor import GraphExecutor
+from framework.runtime.core import Runtime
+
+runtime = Runtime(storage_path)
+executor = GraphExecutor(
+    runtime=runtime,
+    llm=llm,
+    tools=tools,
+    tool_executor=tool_executor,
+    storage_path=storage_path,
+)
+result = await executor.execute(graph=graph, goal=goal, input_data=input_data)
+
+# TUI execution — AgentRuntime also works
+from framework.runtime.agent_runtime import create_agent_runtime
+runtime = create_agent_runtime(
+    graph=graph, goal=goal, storage_path=storage_path,
+    entry_points=[...], llm=llm, tools=tools, tool_executor=tool_executor,
+)
+```
+
+### set_output
+
+Nodes produce structured outputs by calling `set_output(key, value)` — a synthetic tool injected by the framework. When the LLM calls `set_output`, the value is stored in the output accumulator and made available to downstream nodes via shared memory.
+
+`set_output` is NOT a real tool — it is excluded from `real_tool_results`. For client-facing nodes, this means a turn where the LLM only calls `set_output` (no other tools) is treated as a conversational boundary and will block for user input.
+
+### JudgeProtocol
+
+**The judge is the SOLE mechanism for acceptance decisions.** Do not add ad-hoc framework gating, output rollback, or premature rejection logic. If the LLM calls `set_output` too early, fix it with better prompts or a custom judge — not framework-level guards.
+
+The judge controls when a node's loop exits:
+- **Implicit judge** (default, no judge configured): ACCEPTs when the LLM finishes with no tool calls and all required output keys are set
+- **SchemaJudge**: Validates outputs against a Pydantic model
+- **Custom judges**: Implement `evaluate(context) -> JudgeVerdict`
+
+### LoopConfig
+
+Controls loop behavior:
+- `max_iterations` (default 50) — prevents infinite loops
+- `max_tool_calls_per_turn` (default 10) — limits tool calls per LLM response
+- `tool_call_overflow_margin` (default 0.5) — wiggle room before discarding extra tool calls (50% means hard cutoff at 150% of limit)
+- `stall_detection_threshold` (default 3) — detects repeated identical responses
+- `max_history_tokens` (default 32000) — triggers conversation compaction
+
+### Data Tools (Spillover Management)
+
+When tool results exceed the context window, the framework automatically saves them to a spillover directory and truncates with a hint. Nodes that produce or consume large data should include the data tools:
+
+- `save_data(filename, data)` — Write data to a file in the data directory
+- `load_data(filename, offset=0, limit=50)` — Read data with line-based pagination
+- `list_data_files()` — List available data files
+- `serve_file_to_user(filename, label="")` — Get a clickable file:// URI for the user
+
+Note: `data_dir` is a framework-injected context parameter — the LLM never sees or passes it. `GraphExecutor.execute()` sets it per-execution via `contextvars`, so data tools and spillover always share the same session-scoped directory.
+
+These are real MCP tools (not synthetic). Add them to nodes that handle large tool results:
+
+```python
+research_node = NodeSpec(
+    ...
+    tools=["web_search", "web_scrape", "load_data", "save_data", "list_data_files"],
+)
+```
+
+### Fan-Out / Fan-In
+
+Multiple ON_SUCCESS edges from the same source create parallel execution. All branches run concurrently via `asyncio.gather()`. Parallel event_loop nodes must have disjoint `output_keys`.
+
+### max_node_visits
+
+Controls how many times a node can execute in one graph run. Default is 1. Set higher for nodes that are targets of feedback edges (review-reject loops). Set 0 for unlimited (guarded by max_steps).
+
+## Tool Discovery & Validation
+
+**CRITICAL:** Before adding a node with tools, you MUST verify the tools exist.
+
+Tools are provided by MCP servers. Never assume a tool exists - always discover dynamically.
+
+### Step 1: Register MCP Server (if not already done)
+
+```python
+mcp__agent-builder__add_mcp_server(
+    name="tools",
+    transport="stdio",
+    command="python",
+    args='["mcp_server.py", "--stdio"]',
+    cwd="../tools"
+)
+```
+
+### Step 2: Discover Available Tools
+
+```python
+# List all tools from all registered servers
+mcp__agent-builder__list_mcp_tools()
+
+# Or list tools from a specific server
+mcp__agent-builder__list_mcp_tools(server_name="tools")
+```
+
+### Step 3: Validate Before Adding Nodes
+
+Before writing a node with `tools=[...]`:
+
+1. Call `list_mcp_tools()` to get available tools
+2. Check each tool in your node exists in the response
+3. If a tool doesn't exist:
+   - **DO NOT proceed** with the node
+   - Inform the user: "The tool 'X' is not available. Available tools are: ..."
+   - Ask if they want to use an alternative or proceed without the tool
+
+### Tool Validation Anti-Patterns
+
+- **Never assume a tool exists** - always call `list_mcp_tools()` first
+- **Never write a node with unverified tools** - validate before writing
+- **Never silently drop tools** - if a tool doesn't exist, inform the user
+- **Never guess tool names** - use exact names from discovery response
+
+## Workflow Overview: Incremental File Construction
+
+```
+1. CREATE PACKAGE → mkdir + write skeletons
+2. DEFINE GOAL → Write to agent.py + config.py
+3. FOR EACH NODE:
+   - Propose design (event_loop for LLM work, function for deterministic)
+   - User approves
+   - Write to nodes/__init__.py IMMEDIATELY
+   - (Optional) Validate with test_node
+4. CONNECT EDGES → Update agent.py
+   - Use priority for feedback edges (negative priority)
+   - (Optional) Validate with validate_graph
+5. FINALIZE → Write agent class to agent.py
+6. DONE - Agent ready at exports/my_agent/
+```
+
+**Files written immediately. MCP tools optional for validation/testing bookkeeping.**
+
+## When to Use This Skill
+
+Use hive-concepts when:
+- Starting a new agent project and need to understand fundamentals
+- Need to understand agent architecture before building
+- Want to validate tool availability before proceeding
+- Learning about node types, edges, and graph execution
+
+**Next Steps:**
+- Ready to build? → Use `hive-create` skill
+- Need patterns and examples? → Use `hive-patterns` skill
+
+## MCP Tools for Validation
+
+After writing files, optionally use MCP tools for validation:
+
+**test_node** - Validate node configuration with mock inputs
+```python
+mcp__agent-builder__test_node(
+    node_id="search-web",
+    test_input='{"query": "test query"}',
+    mock_llm_response='{"results": "mock output"}'
+)
+```
+
+**validate_graph** - Check graph structure
+```python
+mcp__agent-builder__validate_graph()
+# Returns: unreachable nodes, missing connections, event_loop validation, etc.
+```
+
+**configure_loop** - Set event loop parameters
+```python
+mcp__agent-builder__configure_loop(
+    max_iterations=50,
+    max_tool_calls_per_turn=10,
+    stall_detection_threshold=3,
+    max_history_tokens=32000
+)
+```
+
+**Key Point:** Files are written FIRST. MCP tools are for validation only.
+
+## Related Skills
+
+- **hive-create** - Step-by-step building process
+- **hive-patterns** - Best practices: judges, feedback edges, fan-out, context management
+- **hive** - Complete workflow orchestrator
+- **hive-test** - Test and validate completed agents

.claude/skills/hive-create/SKILL.md

@@ -0,0 +1,981 @@
+---
+name: hive-create
+description: Step-by-step guide for building goal-driven agents. Qualifies use cases first (the good, bad, and ugly), then creates package structure, defines goals, adds nodes, connects edges, and finalizes agent class. Use when actively building an agent.
+license: Apache-2.0
+metadata:
+  author: hive
+  version: "2.2"
+  type: procedural
+  part_of: hive
+  requires: hive-concepts
+---
+
+# Agent Construction - EXECUTE THESE STEPS
+
+**THIS IS AN EXECUTABLE WORKFLOW. DO NOT DISPLAY THIS FILE. EXECUTE THE STEPS BELOW.**
+
+**CRITICAL: DO NOT explore the codebase, read source files, or search for code before starting.** All context you need is in this skill file. When this skill is loaded, IMMEDIATELY begin executing Step 0 — determine the build path as your FIRST action. Do not explain what you will do, do not investigate the project structure, do not read any files — just execute Step 0 now.
+
+---
+
+## STEP 0: Choose Build Path
+
+**If the user has already indicated whether they want to build from scratch or from a template, skip this question and proceed to the appropriate step.**
+
+Otherwise, ask:
+
+```
+AskUserQuestion(questions=[{
+    "question": "How would you like to build your agent?",
+    "header": "Build Path",
+    "options": [
+        {"label": "From scratch", "description": "Design goal, nodes, and graph collaboratively from nothing"},
+        {"label": "From a template", "description": "Start from a working sample agent and customize it"}
+    ],
+    "multiSelect": false
+}])
+```
+
+- If **From scratch**: Proceed to STEP 1A
+- If **From a template**: Proceed to STEP 1B
+
+---
+
+## STEP 1A: Initialize Build Environment (From Scratch)
+
+**EXECUTE THESE TOOL CALLS NOW** (silent setup — no user interaction needed):
+
+1. Check for existing sessions:
+
+```
+mcp__agent-builder__list_sessions()
+```
+
+- If a session with this agent name already exists, load it with `mcp__agent-builder__load_session_by_id(session_id="...")` and skip to step 3.
+- If no matching session exists, proceed to step 2.
+
+2. Create a build session (replace AGENT_NAME with the user's requested agent name in snake_case):
+
+```
+mcp__agent-builder__create_session(name="AGENT_NAME")
+```
+
+3. Register the hive-tools MCP server:
+
+```
+mcp__agent-builder__add_mcp_server(
+    name="hive-tools",
+    transport="stdio",
+    command="uv",
+    args='["run", "python", "mcp_server.py", "--stdio"]',
+    cwd="tools",
+    description="Hive tools MCP server"
+)
+```
+
+4. Discover available tools:
+
+```
+mcp__agent-builder__list_mcp_tools()
+```
+
+5. Create the package directory:
+
+```bash
+mkdir -p exports/AGENT_NAME/nodes
+```
+
+**Save the tool list for STEP 4** — you will need it for node design.
+
+**THEN immediately proceed to STEP 2** (do NOT display setup results to the user — just move on).
+
+---
+
+## STEP 1B: Initialize Build Environment (From Template)
+
+**EXECUTE THESE STEPS NOW:**
+
+### 1B.1: Discover available templates
+
+List the template directories and read each template's `agent.json` to get its name and description:
+
+```bash
+ls examples/templates/
+```
+
+For each directory found, read `examples/templates/TEMPLATE_DIR/agent.json` with the Read tool and extract:
+- `agent.name` — the template's display name
+- `agent.description` — what the template does
+
+### 1B.2: Present templates to user
+
+Show the user a table of available templates:
+
+> **Available Templates:**
+>
+> | # | Template | Description |
+> |---|----------|-------------|
+> | 1 | [name from agent.json] | [description from agent.json] |
+> | 2 | ... | ... |
+
+Then ask the user to pick a template and provide a name for their new agent:
+
+```
+AskUserQuestion(questions=[{
+    "question": "Which template would you like to start from?",
+    "header": "Template",
+    "options": [
+        {"label": "[template 1 name]", "description": "[template 1 description]"},
+        {"label": "[template 2 name]", "description": "[template 2 description]"},
+        ...
+    ],
+    "multiSelect": false
+}, {
+    "question": "What should the new agent be named? (snake_case)",
+    "header": "Agent Name",
+    "options": [
+        {"label": "Use template name", "description": "Keep the original template name as-is"},
+        {"label": "Custom name", "description": "I'll provide a new snake_case name"}
+    ],
+    "multiSelect": false
+}])
+```
+
+### 1B.3: Copy template to exports
+
+```bash
+cp -r examples/templates/TEMPLATE_DIR exports/NEW_AGENT_NAME
+```
+
+### 1B.4: Create session and register MCP (same logic as STEP 1A)
+
+First, check for existing sessions:
+
+```
+mcp__agent-builder__list_sessions()
+```
+
+- If a session with this agent name already exists, load it with `mcp__agent-builder__load_session_by_id(session_id="...")` and skip to `list_mcp_tools`.
+- If no matching session exists, create one:
+
+```
+mcp__agent-builder__create_session(name="NEW_AGENT_NAME")
+```
+
+Then register MCP and discover tools:
+
+```
+mcp__agent-builder__add_mcp_server(
+    name="hive-tools",
+    transport="stdio",
+    command="uv",
+    args='["run", "python", "mcp_server.py", "--stdio"]',
+    cwd="tools",
+    description="Hive tools MCP server"
+)
+```
+
+```
+mcp__agent-builder__list_mcp_tools()
+```
+
+### 1B.5: Load template into builder session
+
+Import the entire agent definition in one call:
+
+```
+mcp__agent-builder__import_from_export(agent_json_path="exports/NEW_AGENT_NAME/agent.json")
+```
+
+This reads the agent.json and populates the builder session with the goal, all nodes, and all edges.
+
+**THEN immediately proceed to STEP 2.**
+
+---
+
+## STEP 2: Define Goal Together with User
+**A responsible engineer doesn't jump into building. First, understand the problem and be transparent about what the framework can and cannot do.**
+
+**If starting from a template**, the goal is already loaded in the builder session. Present the existing goal to the user using the format below and ask for approval. Skip the collaborative drafting questions — go straight to presenting and asking "Do you approve this goal, or would you like to modify it?"
+
+**If the user has NOT already described what they want to build**, start by asking what kind of agent they have in mind:
+
+```
+AskUserQuestion(questions=[{
+    "question": "What kind of agent do you want to build? Select an option below, or choose 'Other' to describe your own.",
+    "header": "Agent type",
+    "options": [
+        {"label": "Data collection", "description": "Gathers information from the web, analyzes it, and produces a report or sends outreach (e.g. market research, news digest, email campaigns, competitive analysis)"},
+        {"label": "Workflow automation", "description": "Automates a multi-step business process end-to-end (e.g. lead qualification, content publishing pipeline, data entry)"},
+        {"label": "Personal assistant", "description": "Handles recurring tasks or monitors for events and acts on them (e.g. daily briefings, meeting prep, file organization)"}
+    ],
+    "multiSelect": false
+}])
+```
+
+Use the user's selection (or their custom description if they chose "Other") as context when shaping the goal below. If the user already described what they want before this step, skip the question and proceed directly.
+
+**DO NOT propose a complete goal on your own.** Instead, collaborate with the user to define it.
+
+### 2a: Fast Discovery (3-8 Turns)
+
+**The core principle**: Discovery should feel like progress, not paperwork. The stakeholder should walk away feeling like you understood them faster than anyone else would have.
+
+**Communication sytle**: Be concise. Say less. Mean more. Impatient stakeholders don't want a wall of text — they want to know you get it. Every sentence you say should either move the conversation forward or prove you understood something. If it does neither, cut it.
+
+**Ask Question Rules: Respect Their Time.** Every question must earn its place by:
+1. **Preventing a costly wrong turn** — you're about to build the wrong thing
+2. **Unlocking a shortcut** — their answer lets you simplify the design
+3. **Surfacing a dealbreaker** — there's a constraint that changes everything
+4. **Provide Options** - Provide options to your questions if possible, but also always allow the user to type something beyong the options.
+
+If a question doesn't do one of these, don't ask it. Make an assumption, state it, and move on.
+
+---
+
+#### 2a.1: Let Them Talk, But Listen Like an Architect
+
+When the stakeholder describes what they want, don't just hear the words — listen for the architecture underneath. While they talk, mentally construct:
+
+- **The actors**: Who are the people/systems involved?
+- **The trigger**: What kicks off the workflow?
+- **The core loop**: What's the main thing that happens repeatedly?
+- **The output**: What's the valuable thing produced at the end?
+- **The pain**: What about today's situation is broken, slow, or missing?
+
+You are extracting a **domain model** from natural language in real time. Most stakeholders won't give you this structure explicitly — they'll give you a story. Your job is to hear the structure inside the story.
+
+| They say... | You're hearing... |
+|-------------|-------------------|
+| Nouns they repeat | Your entities |
+| Verbs they emphasize | Your core operations |
+| Frustrations they mention | Your design constraints |
+| Workarounds they describe | What the system must replace |
+| People they name | Your user types |
+
+---
+
+#### 2a.2: Use Domain Knowledge to Fill In the Blanks
+
+You have broad knowledge of how systems work. Use it aggressively.
+
+If they say "I need a research agent," you already know it probably involves: search, summarization, source tracking, and iteration. Don't ask about each — use them as your starting mental model and let their specifics override your defaults.
+
+If they say "I need to monitor files and alert me," you know this probably involves: watch patterns, triggers, notifications, and state tracking.
+
+**The key move**: Take your general knowledge of the domain and merge it with the specifics they've given you. The result is a draft understanding that's 60-80% right before you've asked a single question. Your questions close the remaining 20-40%.
+
+---
+
+#### 2a.3: Play Back a Proposed Model (Not a List of Questions)
+
+After listening, present a **concrete picture** of what you think they need. Make it specific enough that they can spot what's wrong.
+
+**Pattern: "Here's what I heard — tell me where I'm off"**
+
+> "OK here's how I'm picturing this: [User type] needs to [core action]. Right now they're [current painful workflow]. What you want is [proposed solution that replaces the pain].
+>
+> The way I'd structure this: [key entities] connected by [key relationships], with the main flow being [trigger → steps → outcome].
+>
+> For the MVP, I'd focus on [the one thing that delivers the most value] and hold off on [things that can wait].
+>
+> Before I start — [1-2 specific questions you genuinely can't infer]."
+
+Why this works:
+- **Proves you were listening** — they don't feel like they have to repeat themselves
+- **Shows competence** — you're already thinking in systems
+- **Fast to correct** — "no, it's more like X" takes 10 seconds vs. answering 15 questions
+- **Creates momentum** — heading toward building, not more talking
+
+---
+
+#### 2a.4: Ask Only What You Cannot Infer
+
+Your questions should be **narrow, specific, and consequential**. Never ask what you could answer yourself.
+
+**Good questions** (high-stakes, can't infer):
+- "Who's the primary user — you or your end customers?"
+- "Is this replacing a spreadsheet, or is there literally nothing today?"
+- "Does this need to integrate with anything, or standalone?"
+- "Is there existing data to migrate, or starting fresh?"
+
+**Bad questions** (low-stakes, inferable):
+- "What should happen if there's an error?" *(handle gracefully, obviously)*
+- "Should it have search?" *(if there's a list, yes)*
+- "How should we handle permissions?" *(follow standard patterns)*
+- "What tools should I use?" *(your call, not theirs)*
+
+---
+
+#### Conversation Flow (3-5 Turns)
+
+| Turn | Who | What |
+|------|-----|------|
+| 1 | User | Describes what they need |
+| 2 | Agent | Plays back understanding as a proposed model. Asks 1-2 critical questions max. |
+| 3 | User | Corrects, confirms, or adds detail |
+| 4 | Agent | Adjusts model, confirms MVP scope, states assumptions, declares starting point |
+| *(5)* | *(Only if Turn 3 revealed something that fundamentally changes the approach)* |
+
+**AFTER the conversation, IMMEDIATELY proceed to 2b. DO NOT skip to building.**
+
+---
+
+#### Anti-Patterns
+
+| Don't | Do Instead |
+|-------|------------|
+| Open with a list of questions | Open with what you understood from their request |
+| "What are your requirements?" | "Here's what I think you need — am I right?" |
+| Ask about every edge case | Handle with smart defaults, flag in summary |
+| 10+ turn discovery conversation | 3-8 turns. Start building, iterate with real software. |
+| Being lazy nd not understand what user want to achieve | Understand "what" and "why |
+| Ask for permission to start | State your plan and start |
+| Wait for certainty | Start at 80% confidence, iterate the rest |
+| Ask what tech/tools to use | That's your job. Decide, disclose, move on. |
+
+---
+
+
+
+### 2b: Capability Assessment
+
+**After the user responds, analyze the fit.** Present this assessment honestly:
+
+> **Framework Fit Assessment**
+>
+> Based on what you've described, here's my honest assessment of how well this framework fits your use case:
+>
+> **What Works Well (The Good):**
+> - [List 2-4 things the framework handles well for this use case]
+> - Examples: multi-turn conversations, human-in-the-loop review, tool orchestration, structured outputs
+>
+> **Limitations to Be Aware Of (The Bad):**
+> - [List 2-3 limitations that apply but are workable]
+> - Examples: LLM latency means not suitable for sub-second responses, context window limits for very large documents, cost per run for heavy tool usage
+>
+> **Potential Deal-Breakers (The Ugly):**
+> - [List any significant challenges or missing capabilities — be honest]
+> - Examples: no tool available for X, would require custom MCP server, framework not designed for Y
+
+**Be specific.** Reference the actual tools discovered in Step 1. If the user needs `send_email` but it's not available, say so. If they need real-time streaming from a database, explain that's not how the framework works.
+
+### 2c: Gap Analysis
+
+**Identify specific gaps** between what the user wants and what you can deliver:
+
+| Requirement | Framework Support | Gap/Workaround |
+|-------------|-------------------|----------------|
+| [User need] | [✅ Supported / ⚠️ Partial / ❌ Not supported] | [How to handle or why it's a problem] |
+
+**Examples of gaps to identify:**
+- Missing tools (user needs X, but only Y and Z are available)
+- Scope issues (user wants to process 10,000 items, but LLM rate limits apply)
+- Interaction mismatches (user wants CLI-only, but agent is designed for TUI)
+- Data flow issues (user needs to persist state across runs, but sessions are isolated)
+- Latency requirements (user needs instant responses, but LLM calls take seconds)
+
+### 2d: Recommendation
+
+**Give a clear recommendation:**
+
+> **My Recommendation:**
+>
+> [One of these three:]
+>
+> **✅ PROCEED** — This is a good fit. The framework handles your core needs well. [List any minor caveats.]
+>
+> **⚠️ PROCEED WITH SCOPE ADJUSTMENT** — This can work, but we should adjust: [specific changes]. Without these adjustments, you'll hit [specific problems].
+>
+> **🛑 RECONSIDER** — This framework may not be the right tool for this job because [specific reasons]. Consider instead: [alternatives — simpler script, different framework, custom solution].
+
+### 2e: Get Explicit Acknowledgment
+
+**CALL AskUserQuestion:**
+
+```
+AskUserQuestion(questions=[{
+    "question": "Based on this assessment, how would you like to proceed?",
+    "header": "Proceed",
+    "options": [
+        {"label": "Proceed as described", "description": "I understand the limitations, let's build it"},
+        {"label": "Adjust scope", "description": "Let's modify the requirements to fit better"},
+        {"label": "More questions", "description": "I have questions about the assessment"},
+        {"label": "Reconsider", "description": "Maybe this isn't the right approach"}
+    ],
+    "multiSelect": false
+}])
+```
+
+**WAIT for user response.**
+
+- If **Proceed**: Move to STEP 3
+- If **Adjust scope**: Discuss what to change, update your notes, re-assess if needed
+- If **More questions**: Answer them honestly, then ask again
+- If **Reconsider**: Discuss alternatives. If they decide to proceed anyway, that's their informed choice
+
+---
+
+## STEP 3: Define Goal Together with User
+
+**Now that the use case is qualified, collaborate on the goal definition.**
+
+**START by synthesizing what you learned:**
+
+> Based on our discussion, here's my understanding of the goal:
+>
+> **Core purpose:** [what you understood from 2a]
+> **Success looks like:** [what you inferred]
+> **Key constraints:** [what you inferred]
+>
+> Let me refine this with you:
+>
+> 1. **What should this agent accomplish?** (confirm or correct my understanding)
+> 2. **How will we know it succeeded?** (what specific outcomes matter)
+> 3. **Are there any hard constraints?** (things it must never do, quality bars)
+
+**WAIT for the user to respond.** Use their input (and the agent type they selected) to draft:
+
+- Goal ID (kebab-case)
+- Goal name
+- Goal description
+- 3-5 success criteria (each with: id, description, metric, target, weight)
+- 2-4 constraints (each with: id, description, constraint_type, category)
+
+**PRESENT the draft goal for approval:**
+
+> **Proposed Goal: [Name]**
+>
+> [Description]
+>
+> **Success Criteria:**
+>
+> 1. [criterion 1]
+> 2. [criterion 2]
+>    ...
+>
+> **Constraints:**
+>
+> 1. [constraint 1]
+> 2. [constraint 2]
+>    ...
+
+**THEN call AskUserQuestion:**
+
+```
+AskUserQuestion(questions=[{
+    "question": "Do you approve this goal definition?",
+    "header": "Goal",
+    "options": [
+        {"label": "Approve", "description": "Goal looks good, proceed to workflow design"},
+        {"label": "Modify", "description": "I want to change something"}
+    ],
+    "multiSelect": false
+}])
+```
+
+**WAIT for user response.**
+
+- If **Approve**: Call `mcp__agent-builder__set_goal(...)` with the goal details, then proceed to STEP 4
+- If **Modify**: Ask what they want to change, update the draft, ask again
+
+---
+
+## STEP 4: Design Conceptual Nodes
+
+**If starting from a template**, the nodes are already loaded in the builder session. Present the existing nodes using the table format below and ask for approval. Skip the design phase.
+
+**BEFORE designing nodes**, review the available tools from Step 1. Nodes can ONLY use tools that exist.
+
+**DESIGN the workflow** as a series of nodes. For each node, determine:
+
+- node_id (kebab-case)
+- name
+- description
+- node_type: `"event_loop"` (recommended for all LLM work) or `"function"` (deterministic, no LLM)
+- input_keys (what data this node receives)
+- output_keys (what data this node produces)
+- tools (ONLY tools that exist from Step 1 — empty list if no tools needed)
+- client_facing: True if this node interacts with the user
+- nullable_output_keys (for mutually exclusive outputs or feedback-only inputs)
+- max_node_visits (>1 if this node is a feedback loop target)
+
+**Prefer fewer, richer nodes** (4 nodes > 8 thin nodes). Each node boundary requires serializing outputs. A research node that searches, fetches, and analyzes keeps all source material in its conversation history.
+
+**PRESENT the nodes to the user for review:**
+
+> **Proposed Nodes ([N] total):**
+>
+> | #   | Node ID    | Type       | Description                   | Tools                  | Client-Facing |
+> | --- | ---------- | ---------- | ----------------------------- | ---------------------- | :-----------: |
+> | 1   | `intake`   | event_loop | Gather requirements from user | —                      |      Yes      |
+> | 2   | `research` | event_loop | Search and analyze sources    | web_search, web_scrape |      No       |
+> | 3   | `review`   | event_loop | Present findings for approval | —                      |      Yes      |
+> | 4   | `report`   | event_loop | Generate final report         | save_data              |      No       |
+>
+> **Data Flow:**
+>
+> - `intake` produces: `research_brief`
+> - `research` receives: `research_brief` → produces: `findings`, `sources`
+> - `review` receives: `findings`, `sources` → produces: `approved_findings` or `feedback`
+> - `report` receives: `approved_findings` → produces: `final_report`
+
+**THEN call AskUserQuestion:**
+
+```
+AskUserQuestion(questions=[{
+    "question": "Do you approve these nodes?",
+    "header": "Nodes",
+    "options": [
+        {"label": "Approve", "description": "Nodes look good, proceed to graph design"},
+        {"label": "Modify", "description": "I want to change the nodes"}
+    ],
+    "multiSelect": false
+}])
+```
+
+**WAIT for user response.**
+
+- If **Approve**: Proceed to STEP 5
+- If **Modify**: Ask what they want to change, update design, ask again
+
+---
+
+## STEP 5: Design Full Graph and Review
+
+**If starting from a template**, the edges are already loaded in the builder session. Render the existing graph as ASCII art and present it to the user for approval. Skip the edge design phase.
+
+**DETERMINE the edges** connecting the approved nodes. For each edge:
+
+- edge_id (kebab-case)
+- source → target
+- condition: `on_success`, `on_failure`, `always`, or `conditional`
+- condition_expr (Python expression, only if conditional)
+- priority (positive = forward, negative = feedback/loop-back)
+
+**RENDER the complete graph as ASCII art.** Make it large and clear — the user needs to see and understand the full workflow at a glance.
+
+**IMPORTANT: Make the ASCII art BIG and READABLE.** Use a box-and-arrow style with generous spacing. Do NOT make it tiny or compressed. Example format:
+
+```
+┌─────────────────────────────────────────────────────────────────────────────┐
+│                           AGENT: Research Agent                            │
+│                                                                            │
+│  Goal: Thoroughly research technical topics and produce verified reports   │
+└─────────────────────────────────────────────────────────────────────────────┘
+
+    ┌───────────────────────┐
+    │       INTAKE          │
+    │  (client-facing)      │
+    │                       │
+    │  in:  topic           │
+    │  out: research_brief  │
+    └───────────┬───────────┘
+                │ on_success
+                ▼
+    ┌───────────────────────┐
+    │      RESEARCH         │
+    │                       │
+    │  tools: web_search,   │
+    │         web_scrape    │
+    │                       │
+    │  in:  research_brief  │
+    │       [feedback]      │
+    │  out: findings,       │
+    │       sources         │
+    └───────────┬───────────┘
+                │ on_success
+                ▼
+    ┌───────────────────────┐
+    │       REVIEW          │
+    │  (client-facing)      │
+    │                       │
+    │  in:  findings,       │
+    │       sources         │
+    │  out: approved_findings│
+    │       OR feedback     │
+    └───────┬───────┬───────┘
+            │       │
+   approved │       │ feedback (priority: -1)
+            │       │
+            ▼       └──────────────────┐
+    ┌───────────────────────┐          │
+    │       REPORT          │          │
+    │                       │          │
+    │  tools: save_data     │          │
+    │                       │          │
+    │  in:  approved_       │          │
+    │       findings        │          │
+    │  out: final_report    │          │
+    └───────────────────────┘          │
+                                       │
+            ┌──────────────────────────┘
+            │ loops back to RESEARCH
+            ▼ (max_node_visits: 3)
+
+
+    EDGES:
+    ──────
+    1. intake → research         [on_success, priority: 1]
+    2. research → review         [on_success, priority: 1]
+    3. review → report           [conditional: approved_findings is not None, priority: 1]
+    4. review → research         [conditional: feedback is not None, priority: -1]
+```
+
+**PRESENT the graph and edges to the user:**
+
+> Here is the complete workflow graph:
+>
+> [ASCII art above]
+>
+> **Edge Summary:**
+>
+> | #   | Edge              | Condition                                    | Priority |
+> | --- | ----------------- | -------------------------------------------- | -------- |
+> | 1   | intake → research | on_success                                   | 1        |
+> | 2   | research → review | on_success                                   | 1        |
+> | 3   | review → report   | conditional: `approved_findings is not None` | 1        |
+> | 4   | review → research | conditional: `feedback is not None`          | -1       |
+
+**THEN call AskUserQuestion:**
+
+```
+AskUserQuestion(questions=[{
+    "question": "Do you approve this workflow graph?",
+    "header": "Graph",
+    "options": [
+        {"label": "Approve", "description": "Graph looks good, proceed to build the agent"},
+        {"label": "Modify", "description": "I want to change the graph"}
+    ],
+    "multiSelect": false
+}])
+```
+
+**WAIT for user response.**
+
+- If **Approve**: Proceed to STEP 6
+- If **Modify**: Ask what they want to change, update the graph, re-render, ask again
+
+---
+
+## STEP 6: Build the Agent
+
+**NOW — and only now — write the actual code.** The user has approved the goal, nodes, and graph.
+
+### 6a: Register nodes and edges with MCP
+**If starting from a template**, the copied files will be overwritten with the approved design. You MUST replace every occurrence of the old template name with the new agent name. Here is the complete checklist — miss NONE of these:
+
+| File | What to rename |
+|------|---------------|
+| `config.py` | `AgentMetadata.name` — the display name shown in TUI agent selection |
+| `config.py` | `AgentMetadata.description` — agent description |
+| `config.py` | `AgentMetadata.intro_message` — greeting shown to user when TUI loads |
+| `agent.py` | Module docstring (line 1) |
+| `agent.py` | `class OldNameAgent:` → `class NewNameAgent:` |
+| `agent.py` | `GraphSpec(id="old-name-graph")` → `GraphSpec(id="new-name-graph")` — shown in TUI status bar |
+| `agent.py` | Storage path: `Path.home() / ".hive" / "agents" / "old_name"` → `"new_name"` |
+| `__main__.py` | Module docstring (line 1) |
+| `__main__.py` | `from .agent import ... OldNameAgent` → `NewNameAgent` |
+| `__main__.py` | CLI help string in `def cli()` docstring |
+| `__main__.py` | All `OldNameAgent()` instantiations |
+| `__main__.py` | Storage path (duplicated from agent.py) |
+| `__main__.py` | Shell banner string (e.g. `"=== Old Name Agent ==="`) |
+| `__init__.py` | Package docstring |
+| `__init__.py` | `from .agent import OldNameAgent` import |
+| `__init__.py` | `__all__` list entry |
+
+**If starting from a template and no modifications were made in Steps 2-5**, the nodes and edges are already registered. Skip to validation (`mcp__agent-builder__validate_graph()`). If modifications were made, re-register the changed nodes/edges (the MCP tools handle duplicates by overwriting).
+
+**FOR EACH approved node**, call:
+
+```
+mcp__agent-builder__add_node(
+    node_id="...",
+    name="...",
+    description="...",
+    node_type="event_loop",
+    input_keys='["key1", "key2"]',
+    output_keys='["key1"]',
+    tools='["tool1"]',
+    system_prompt="...",
+    client_facing=True/False,
+    nullable_output_keys='["key"]',
+    max_node_visits=1
+)
+```
+
+**FOR EACH approved edge**, call:
+
+```
+mcp__agent-builder__add_edge(
+    edge_id="source-to-target",
+    source="source-node-id",
+    target="target-node-id",
+    condition="on_success",
+    condition_expr="",
+    priority=1
+)
+```
+
+**VALIDATE the graph:**
+
+```
+mcp__agent-builder__validate_graph()
+```
+
+- If invalid: Fix the issues and re-validate
+- If valid: Continue to 6b
+
+### 6b: Write Python package files
+
+**EXPORT the graph data:**
+
+```
+mcp__agent-builder__export_graph()
+```
+
+**THEN write the Python package files** using the exported data. Create these files in `exports/AGENT_NAME/`:
+
+1. `config.py` - Runtime configuration with model settings and `AgentMetadata` (including `intro_message` — the greeting shown when TUI loads)
+2. `nodes/__init__.py` - All NodeSpec definitions
+3. `agent.py` - Goal, edges, graph config, and agent class
+4. `__init__.py` - Package exports
+5. `__main__.py` - CLI interface
+6. `mcp_servers.json` - MCP server configurations
+7. `README.md` - Usage documentation
+
+**IMPORTANT entry_points format:**
+
+- MUST be: `{"start": "first-node-id"}`
+- NOT: `{"first-node-id": ["input_keys"]}` (WRONG)
+- NOT: `{"first-node-id"}` (WRONG - this is a set)
+
+**IMPORTANT mcp_servers.json format:**
+
+```json
+{
+  "hive-tools": {
+    "transport": "stdio",
+    "command": "uv",
+    "args": ["run", "python", "mcp_server.py", "--stdio"],
+    "cwd": "../../tools",
+    "description": "Hive tools MCP server"
+  }
+}
+```
+
+- NO `"mcpServers"` wrapper (that's Claude Desktop format, NOT hive format)
+- `cwd` MUST be `"../../tools"` (relative from `exports/AGENT_NAME/` to `tools/`)
+- `command` MUST be `"uv"` with `"args": ["run", "python", ...]` (NOT bare `"python"` which fails on Mac)
+
+**Use the example agent** at `.claude/skills/hive-create/examples/deep_research_agent/` as a template for file structure and patterns. It demonstrates: STEP 1/STEP 2 prompts, client-facing nodes, feedback loops, nullable_output_keys, and data tools.
+
+**AFTER writing all files, tell the user:**
+
+> Agent package created: `exports/AGENT_NAME/`
+>
+> **Files generated:**
+>
+> - `__init__.py` - Package exports
+> - `agent.py` - Goal, nodes, edges, agent class
+> - `config.py` - Runtime configuration
+> - `__main__.py` - CLI interface
+> - `nodes/__init__.py` - Node definitions
+> - `mcp_servers.json` - MCP server config
+> - `README.md` - Usage documentation
+
+---
+
+## STEP 7: Verify and Test
+
+**RUN validation:**
+
+```bash
+cd /home/timothy/oss/hive && PYTHONPATH=exports uv run python -m AGENT_NAME validate
+```
+
+- If valid: Agent is complete!
+- If errors: Fix the issues and re-run
+
+**TELL the user the agent is ready** and display the next steps box:
+
+```
+┌─────────────────────────────────────────────────────────────────────────────┐
+│                         ✅ AGENT BUILD COMPLETE                             │
+├─────────────────────────────────────────────────────────────────────────────┤
+│                                                                             │
+│  NEXT STEPS:                                                                │
+│                                                                             │
+│  1. SET UP CREDENTIALS (if agent uses tools like web_search, send_email):  │
+│                                                                             │
+│     /hive-credentials --agent AGENT_NAME                                    │
+│                                                                             │
+│  2. RUN YOUR AGENT:                                                         │
+│                                                                             │
+│     hive tui                                                                │
+│                                                                             │
+│     Then select your agent from the list and press Enter.                   │
+│                                                                             │
+│  3. DEBUG ANY ISSUES:                                                       │
+│                                                                             │
+│     /hive-debugger                                                          │
+│                                                                             │
+│     The debugger monitors runtime logs, identifies retry loops,             │
+│     tool failures, and missing outputs, and provides fix recommendations.  │
+│                                                                             │
+└─────────────────────────────────────────────────────────────────────────────┘
+```
+
+---
+
+## REFERENCE: Node Types
+
+| Type         | tools param             | Use when                                |
+| ------------ | ----------------------- | --------------------------------------- |
+| `event_loop` | `'["tool1"]'` or `'[]'` | LLM-powered work with or without tools  |
+| `function`   | N/A                     | Deterministic Python operations, no LLM |
+
+---
+
+## REFERENCE: NodeSpec Fields
+
+| Field                  | Default | Description                                                           |
+| ---------------------- | ------- | --------------------------------------------------------------------- |
+| `client_facing`        | `False` | Streams output to user, blocks for input between turns                |
+| `nullable_output_keys` | `[]`    | Output keys that may remain unset (mutually exclusive outputs)        |
+| `max_node_visits`      | `1`     | Max executions per run. Set >1 for feedback loop targets. 0=unlimited |
+
+---
+
+## REFERENCE: Edge Conditions & Priority
+
+| Condition     | When edge is followed                 |
+| ------------- | ------------------------------------- |
+| `on_success`  | Source node completed successfully    |
+| `on_failure`  | Source node failed                    |
+| `always`      | Always, regardless of success/failure |
+| `conditional` | When condition_expr evaluates to True |
+
+**Priority:** Positive = forward edge (evaluated first). Negative = feedback edge (loops back to earlier node). Multiple ON_SUCCESS edges from same source = parallel execution (fan-out).
+
+---
+
+## REFERENCE: System Prompt Best Practice
+
+For **internal** event_loop nodes (not client-facing), instruct the LLM to use `set_output`:
+
+```
+Use set_output(key, value) to store your results. For example:
+- set_output("search_results", <your results as a JSON string>)
+
+Do NOT return raw JSON. Use the set_output tool to produce outputs.
+```
+
+For **client-facing** event_loop nodes, use the STEP 1/STEP 2 pattern:
+
+```
+**STEP 1 — Respond to the user (text only, NO tool calls):**
+[Present information, ask questions, etc.]
+
+**STEP 2 — After the user responds, call set_output:**
+- set_output("key", "value based on user's response")
+```
+
+This prevents the LLM from calling `set_output` before the user has had a chance to respond. The "NO tool calls" instruction in STEP 1 ensures the node blocks for user input before proceeding.
+
+---
+
+## EventLoopNode Runtime
+
+EventLoopNodes are **auto-created** by `GraphExecutor` at runtime. Both direct `GraphExecutor` and `AgentRuntime` / `create_agent_runtime()` handle event_loop nodes automatically. No manual `node_registry` setup is needed.
+
+```python
+# Direct execution
+from framework.graph.executor import GraphExecutor
+from framework.runtime.core import Runtime
+
+storage_path = Path.home() / ".hive" / "agents" / "my_agent"
+storage_path.mkdir(parents=True, exist_ok=True)
+runtime = Runtime(storage_path)
+
+executor = GraphExecutor(
+    runtime=runtime,
+    llm=llm,
+    tools=tools,
+    tool_executor=tool_executor,
+    storage_path=storage_path,
+)
+result = await executor.execute(graph=graph, goal=goal, input_data=input_data)
+```
+
+**DO NOT pass `runtime=None` to `GraphExecutor`** — it will crash with `'NoneType' object has no attribute 'start_run'`.
+
+---
+
+## REFERENCE: Framework Capabilities for Qualification
+
+Use this reference during STEP 2 to give accurate, honest assessments.
+
+### What the Framework Does Well (The Good)
+
+| Capability | Description |
+|------------|-------------|
+| Multi-turn conversations | Client-facing nodes stream to users and block for input |
+| Human-in-the-loop review | Approval checkpoints with feedback loops back to earlier nodes |
+| Tool orchestration | LLM can call multiple tools, framework handles execution |
+| Structured outputs | `set_output` produces validated, typed outputs |
+| Parallel execution | Fan-out/fan-in for concurrent node execution |
+| Context management | Automatic compaction and spillover for large data |
+| Error recovery | Retry logic, judges, and feedback edges for self-correction |
+| Session persistence | State saved to disk, resumable sessions |
+
+### Framework Limitations (The Bad)
+
+| Limitation | Impact | Workaround |
+|------------|--------|------------|
+| LLM latency | 2-10+ seconds per turn | Not suitable for real-time/low-latency needs |
+| Context window limits | ~128K tokens max | Use data tools for spillover, design for chunking |
+| Cost per run | LLM API calls cost money | Budget planning, caching where possible |
+| Rate limits | API throttling on heavy usage | Backoff, queue management |
+| Node boundaries lose context | Outputs must be serialized | Prefer fewer, richer nodes |
+| Single-threaded within node | One LLM call at a time per node | Use fan-out for parallelism |
+
+### Not Designed For (The Ugly)
+
+| Use Case | Why It's Problematic | Alternative |
+|----------|---------------------|-------------|
+| Long-running daemons | Framework is request-response, not persistent | External scheduler + agent |
+| Sub-second responses | LLM latency is inherent | Traditional code, no LLM |
+| Processing millions of items | Context windows and rate limits | Batch processing + sampling |
+| Real-time streaming data | No built-in pub/sub or streaming input | Custom MCP server + agent |
+| Guaranteed determinism | LLM outputs vary | Function nodes for deterministic parts |
+| Offline/air-gapped | Requires LLM API access | Local models (not currently supported) |
+| Multi-user concurrency | Single-user session model | Separate agent instances per user |
+
+### Tool Availability Reality Check
+
+**Before promising any capability, check `list_mcp_tools()`.** Common gaps:
+
+- **Email**: May not have `send_email` — check before promising email automation
+- **Calendar**: May not have calendar APIs — check before promising scheduling
+- **Database**: May not have SQL tools — check before promising data queries
+- **File system**: Has data tools but not arbitrary filesystem access
+- **External APIs**: Depends entirely on what MCP servers are registered
+
+---
+
+## COMMON MISTAKES TO AVOID
+
+1. **Skipping use case qualification** - A responsible engineer qualifies the use case BEFORE building. Be transparent about what works, what doesn't, and what's problematic
+2. **Hiding limitations** - Don't oversell the framework. If a tool doesn't exist or a capability is missing, say so upfront
+3. **Using tools that don't exist** - Always check `mcp__agent-builder__list_mcp_tools()` first
+4. **Wrong entry_points format** - Must be `{"start": "node-id"}`, NOT a set or list
+5. **Skipping validation** - Always validate nodes and graph before proceeding
+6. **Not waiting for approval** - Always ask user before major steps
+7. **Displaying this file** - Execute the steps, don't show documentation
+8. **Too many thin nodes** - Prefer fewer, richer nodes (4 nodes > 8 nodes)
+9. **Missing STEP 1/STEP 2 in client-facing prompts** - Client-facing nodes need explicit phases to prevent premature set_output
+10. **Forgetting nullable_output_keys** - Mark input_keys that only arrive on certain edges (e.g., feedback) as nullable on the receiving node
+11. **Adding framework gating for LLM behavior** - Fix prompts or use judges, not ad-hoc code
+12. **Writing code before user approves the graph** - Always get approval on goal, nodes, and graph BEFORE writing any agent code
+13. **Wrong mcp_servers.json format** - Use flat format (no `"mcpServers"` wrapper), `cwd` must be `"../../tools"`, and `command` must be `"uv"` with args `["run", "python", ...]`

.claude/skills/hive-create/examples/deep_research_agent/__init__.py

@@ -0,0 +1,24 @@
+"""
+Deep Research Agent - Interactive, rigorous research with TUI conversation.
+
+Research any topic through multi-source web search, quality evaluation,
+and synthesis. Features client-facing TUI interaction at key checkpoints
+for user guidance and iterative deepening.
+"""
+
+from .agent import DeepResearchAgent, default_agent, goal, nodes, edges
+from .config import RuntimeConfig, AgentMetadata, default_config, metadata
+
+__version__ = "1.0.0"
+
+__all__ = [
+    "DeepResearchAgent",
+    "default_agent",
+    "goal",
+    "nodes",
+    "edges",
+    "RuntimeConfig",
+    "AgentMetadata",
+    "default_config",
+    "metadata",
+]

.claude/skills/hive-create/examples/deep_research_agent/__main__.py

@@ -0,0 +1,241 @@
+"""
+CLI entry point for Deep Research Agent.
+
+Uses AgentRuntime for multi-entrypoint support with HITL pause/resume.
+"""
+
+import asyncio
+import json
+import logging
+import sys
+import click
+
+from .agent import default_agent, DeepResearchAgent
+
+
+def setup_logging(verbose=False, debug=False):
+    """Configure logging for execution visibility."""
+    if debug:
+        level, fmt = logging.DEBUG, "%(asctime)s %(name)s: %(message)s"
+    elif verbose:
+        level, fmt = logging.INFO, "%(message)s"
+    else:
+        level, fmt = logging.WARNING, "%(levelname)s: %(message)s"
+    logging.basicConfig(level=level, format=fmt, stream=sys.stderr)
+    logging.getLogger("framework").setLevel(level)
+
+
+@click.group()
+@click.version_option(version="1.0.0")
+def cli():
+    """Deep Research Agent - Interactive, rigorous research with TUI conversation."""
+    pass
+
+
+@cli.command()
+@click.option("--topic", "-t", type=str, required=True, help="Research topic")
+@click.option("--mock", is_flag=True, help="Run in mock mode")
+@click.option("--quiet", "-q", is_flag=True, help="Only output result JSON")
+@click.option("--verbose", "-v", is_flag=True, help="Show execution details")
+@click.option("--debug", is_flag=True, help="Show debug logging")
+def run(topic, mock, quiet, verbose, debug):
+    """Execute research on a topic."""
+    if not quiet:
+        setup_logging(verbose=verbose, debug=debug)
+
+    context = {"topic": topic}
+
+    result = asyncio.run(default_agent.run(context, mock_mode=mock))
+
+    output_data = {
+        "success": result.success,
+        "steps_executed": result.steps_executed,
+        "output": result.output,
+    }
+    if result.error:
+        output_data["error"] = result.error
+
+    click.echo(json.dumps(output_data, indent=2, default=str))
+    sys.exit(0 if result.success else 1)
+
+
+@cli.command()
+@click.option("--mock", is_flag=True, help="Run in mock mode")
+@click.option("--verbose", "-v", is_flag=True, help="Show execution details")
+@click.option("--debug", is_flag=True, help="Show debug logging")
+def tui(mock, verbose, debug):
+    """Launch the TUI dashboard for interactive research."""
+    setup_logging(verbose=verbose, debug=debug)
+
+    try:
+        from framework.tui.app import AdenTUI
+    except ImportError:
+        click.echo(
+            "TUI requires the 'textual' package. Install with: pip install textual"
+        )
+        sys.exit(1)
+
+    from pathlib import Path
+
+    from framework.llm import LiteLLMProvider
+    from framework.runner.tool_registry import ToolRegistry
+    from framework.runtime.agent_runtime import create_agent_runtime
+    from framework.runtime.event_bus import EventBus
+    from framework.runtime.execution_stream import EntryPointSpec
+
+    async def run_with_tui():
+        agent = DeepResearchAgent()
+
+        # Build graph and tools
+        agent._event_bus = EventBus()
+        agent._tool_registry = ToolRegistry()
+
+        storage_path = Path.home() / ".hive" / "agents" / "deep_research_agent"
+        storage_path.mkdir(parents=True, exist_ok=True)
+
+        mcp_config_path = Path(__file__).parent / "mcp_servers.json"
+        if mcp_config_path.exists():
+            agent._tool_registry.load_mcp_config(mcp_config_path)
+
+        llm = None
+        if not mock:
+            llm = LiteLLMProvider(
+                model=agent.config.model,
+                api_key=agent.config.api_key,
+                api_base=agent.config.api_base,
+            )
+
+        tools = list(agent._tool_registry.get_tools().values())
+        tool_executor = agent._tool_registry.get_executor()
+        graph = agent._build_graph()
+
+        runtime = create_agent_runtime(
+            graph=graph,
+            goal=agent.goal,
+            storage_path=storage_path,
+            entry_points=[
+                EntryPointSpec(
+                    id="start",
+                    name="Start Research",
+                    entry_node="intake",
+                    trigger_type="manual",
+                    isolation_level="isolated",
+                ),
+            ],
+            llm=llm,
+            tools=tools,
+            tool_executor=tool_executor,
+        )
+
+        await runtime.start()
+
+        try:
+            app = AdenTUI(runtime)
+            await app.run_async()
+        finally:
+            await runtime.stop()
+
+    asyncio.run(run_with_tui())
+
+
+@cli.command()
+@click.option("--json", "output_json", is_flag=True)
+def info(output_json):
+    """Show agent information."""
+    info_data = default_agent.info()
+    if output_json:
+        click.echo(json.dumps(info_data, indent=2))
+    else:
+        click.echo(f"Agent: {info_data['name']}")
+        click.echo(f"Version: {info_data['version']}")
+        click.echo(f"Description: {info_data['description']}")
+        click.echo(f"\nNodes: {', '.join(info_data['nodes'])}")
+        click.echo(f"Client-facing: {', '.join(info_data['client_facing_nodes'])}")
+        click.echo(f"Entry: {info_data['entry_node']}")
+        click.echo(f"Terminal: {', '.join(info_data['terminal_nodes'])}")
+
+
+@cli.command()
+def validate():
+    """Validate agent structure."""
+    validation = default_agent.validate()
+    if validation["valid"]:
+        click.echo("Agent is valid")
+        if validation["warnings"]:
+            for warning in validation["warnings"]:
+                click.echo(f"  WARNING: {warning}")
+    else:
+        click.echo("Agent has errors:")
+        for error in validation["errors"]:
+            click.echo(f"  ERROR: {error}")
+    sys.exit(0 if validation["valid"] else 1)
+
+
+@cli.command()
+@click.option("--verbose", "-v", is_flag=True)
+def shell(verbose):
+    """Interactive research session (CLI, no TUI)."""
+    asyncio.run(_interactive_shell(verbose))
+
+
+async def _interactive_shell(verbose=False):
+    """Async interactive shell."""
+    setup_logging(verbose=verbose)
+
+    click.echo("=== Deep Research Agent ===")
+    click.echo("Enter a topic to research (or 'quit' to exit):\n")
+
+    agent = DeepResearchAgent()
+    await agent.start()
+
+    try:
+        while True:
+            try:
+                topic = await asyncio.get_event_loop().run_in_executor(
+                    None, input, "Topic> "
+                )
+                if topic.lower() in ["quit", "exit", "q"]:
+                    click.echo("Goodbye!")
+                    break
+
+                if not topic.strip():
+                    continue
+
+                click.echo("\nResearching...\n")
+
+                result = await agent.trigger_and_wait("start", {"topic": topic})
+
+                if result is None:
+                    click.echo("\n[Execution timed out]\n")
+                    continue
+
+                if result.success:
+                    output = result.output
+                    if "report_content" in output:
+                        click.echo("\n--- Report ---\n")
+                        click.echo(output["report_content"])
+                        click.echo("\n")
+                    if "references" in output:
+                        click.echo("--- References ---\n")
+                        for ref in output.get("references", []):
+                            click.echo(
+                                f"  [{ref.get('number', '?')}] {ref.get('title', '')} - {ref.get('url', '')}"
+                            )
+                        click.echo("\n")
+                else:
+                    click.echo(f"\nResearch failed: {result.error}\n")
+
+            except KeyboardInterrupt:
+                click.echo("\nGoodbye!")
+                break
+            except Exception as e:
+                click.echo(f"Error: {e}", err=True)
+                import traceback
+
+                traceback.print_exc()
+    finally:
+        await agent.stop()
+
+
+if __name__ == "__main__":
+    cli()

.claude/skills/hive-create/examples/deep_research_agent/agent.py

@@ -0,0 +1,311 @@
+"""Agent graph construction for Deep Research Agent."""
+
+from framework.graph import EdgeSpec, EdgeCondition, Goal, SuccessCriterion, Constraint
+from framework.graph.edge import GraphSpec
+from framework.graph.executor import ExecutionResult, GraphExecutor
+from framework.runtime.event_bus import EventBus
+from framework.runtime.core import Runtime
+from framework.llm import LiteLLMProvider
+from framework.runner.tool_registry import ToolRegistry
+
+from .config import default_config, metadata
+from .nodes import (
+    intake_node,
+    research_node,
+    review_node,
+    report_node,
+)
+
+# Goal definition
+goal = Goal(
+    id="rigorous-interactive-research",
+    name="Rigorous Interactive Research",
+    description=(
+        "Research any topic by searching diverse sources, analyzing findings, "
+        "and producing a cited report — with user checkpoints to guide direction."
+    ),
+    success_criteria=[
+        SuccessCriterion(
+            id="source-diversity",
+            description="Use multiple diverse, authoritative sources",
+            metric="source_count",
+            target=">=5",
+            weight=0.25,
+        ),
+        SuccessCriterion(
+            id="citation-coverage",
+            description="Every factual claim in the report cites its source",
+            metric="citation_coverage",
+            target="100%",
+            weight=0.25,
+        ),
+        SuccessCriterion(
+            id="user-satisfaction",
+            description="User reviews findings before report generation",
+            metric="user_approval",
+            target="true",
+            weight=0.25,
+        ),
+        SuccessCriterion(
+            id="report-completeness",
+            description="Final report answers the original research questions",
+            metric="question_coverage",
+            target="90%",
+            weight=0.25,
+        ),
+    ],
+    constraints=[
+        Constraint(
+            id="no-hallucination",
+            description="Only include information found in fetched sources",
+            constraint_type="quality",
+            category="accuracy",
+        ),
+        Constraint(
+            id="source-attribution",
+            description="Every claim must cite its source with a numbered reference",
+            constraint_type="quality",
+            category="accuracy",
+        ),
+        Constraint(
+            id="user-checkpoint",
+            description="Present findings to the user before writing the final report",
+            constraint_type="functional",
+            category="interaction",
+        ),
+    ],
+)
+
+# Node list
+nodes = [
+    intake_node,
+    research_node,
+    review_node,
+    report_node,
+]
+
+# Edge definitions
+edges = [
+    # intake -> research
+    EdgeSpec(
+        id="intake-to-research",
+        source="intake",
+        target="research",
+        condition=EdgeCondition.ON_SUCCESS,
+        priority=1,
+    ),
+    # research -> review
+    EdgeSpec(
+        id="research-to-review",
+        source="research",
+        target="review",
+        condition=EdgeCondition.ON_SUCCESS,
+        priority=1,
+    ),
+    # review -> research (feedback loop)
+    EdgeSpec(
+        id="review-to-research-feedback",
+        source="review",
+        target="research",
+        condition=EdgeCondition.CONDITIONAL,
+        condition_expr="needs_more_research == True",
+        priority=1,
+    ),
+    # review -> report (user satisfied)
+    EdgeSpec(
+        id="review-to-report",
+        source="review",
+        target="report",
+        condition=EdgeCondition.CONDITIONAL,
+        condition_expr="needs_more_research == False",
+        priority=2,
+    ),
+]
+
+# Graph configuration
+entry_node = "intake"
+entry_points = {"start": "intake"}
+pause_nodes = []
+terminal_nodes = ["report"]
+
+
+class DeepResearchAgent:
+    """
+    Deep Research Agent — 4-node pipeline with user checkpoints.
+
+    Flow: intake -> research -> review -> report
+                      ^           |
+                      +-- feedback loop (if user wants more)
+    """
+
+    def __init__(self, config=None):
+        self.config = config or default_config
+        self.goal = goal
+        self.nodes = nodes
+        self.edges = edges
+        self.entry_node = entry_node
+        self.entry_points = entry_points
+        self.pause_nodes = pause_nodes
+        self.terminal_nodes = terminal_nodes
+        self._executor: GraphExecutor | None = None
+        self._graph: GraphSpec | None = None
+        self._event_bus: EventBus | None = None
+        self._tool_registry: ToolRegistry | None = None
+
+    def _build_graph(self) -> GraphSpec:
+        """Build the GraphSpec."""
+        return GraphSpec(
+            id="deep-research-agent-graph",
+            goal_id=self.goal.id,
+            version="1.0.0",
+            entry_node=self.entry_node,
+            entry_points=self.entry_points,
+            terminal_nodes=self.terminal_nodes,
+            pause_nodes=self.pause_nodes,
+            nodes=self.nodes,
+            edges=self.edges,
+            default_model=self.config.model,
+            max_tokens=self.config.max_tokens,
+            loop_config={
+                "max_iterations": 100,
+                "max_tool_calls_per_turn": 20,
+                "max_history_tokens": 32000,
+            },
+        )
+
+    def _setup(self, mock_mode=False) -> GraphExecutor:
+        """Set up the executor with all components."""
+        from pathlib import Path
+
+        storage_path = Path.home() / ".hive" / "agents" / "deep_research_agent"
+        storage_path.mkdir(parents=True, exist_ok=True)
+
+        self._event_bus = EventBus()
+        self._tool_registry = ToolRegistry()
+
+        mcp_config_path = Path(__file__).parent / "mcp_servers.json"
+        if mcp_config_path.exists():
+            self._tool_registry.load_mcp_config(mcp_config_path)
+
+        llm = None
+        if not mock_mode:
+            llm = LiteLLMProvider(
+                model=self.config.model,
+                api_key=self.config.api_key,
+                api_base=self.config.api_base,
+            )
+
+        tool_executor = self._tool_registry.get_executor()
+        tools = list(self._tool_registry.get_tools().values())
+
+        self._graph = self._build_graph()
+        runtime = Runtime(storage_path)
+
+        self._executor = GraphExecutor(
+            runtime=runtime,
+            llm=llm,
+            tools=tools,
+            tool_executor=tool_executor,
+            event_bus=self._event_bus,
+            storage_path=storage_path,
+            loop_config=self._graph.loop_config,
+        )
+
+        return self._executor
+
+    async def start(self, mock_mode=False) -> None:
+        """Set up the agent (initialize executor and tools)."""
+        if self._executor is None:
+            self._setup(mock_mode=mock_mode)
+
+    async def stop(self) -> None:
+        """Clean up resources."""
+        self._executor = None
+        self._event_bus = None
+
+    async def trigger_and_wait(
+        self,
+        entry_point: str,
+        input_data: dict,
+        timeout: float | None = None,
+        session_state: dict | None = None,
+    ) -> ExecutionResult | None:
+        """Execute the graph and wait for completion."""
+        if self._executor is None:
+            raise RuntimeError("Agent not started. Call start() first.")
+        if self._graph is None:
+            raise RuntimeError("Graph not built. Call start() first.")
+
+        return await self._executor.execute(
+            graph=self._graph,
+            goal=self.goal,
+            input_data=input_data,
+            session_state=session_state,
+        )
+
+    async def run(
+        self, context: dict, mock_mode=False, session_state=None
+    ) -> ExecutionResult:
+        """Run the agent (convenience method for single execution)."""
+        await self.start(mock_mode=mock_mode)
+        try:
+            result = await self.trigger_and_wait(
+                "start", context, session_state=session_state
+            )
+            return result or ExecutionResult(success=False, error="Execution timeout")
+        finally:
+            await self.stop()
+
+    def info(self):
+        """Get agent information."""
+        return {
+            "name": metadata.name,
+            "version": metadata.version,
+            "description": metadata.description,
+            "goal": {
+                "name": self.goal.name,
+                "description": self.goal.description,
+            },
+            "nodes": [n.id for n in self.nodes],
+            "edges": [e.id for e in self.edges],
+            "entry_node": self.entry_node,
+            "entry_points": self.entry_points,
+            "pause_nodes": self.pause_nodes,
+            "terminal_nodes": self.terminal_nodes,
+            "client_facing_nodes": [n.id for n in self.nodes if n.client_facing],
+        }
+
+    def validate(self):
+        """Validate agent structure."""
+        errors = []
+        warnings = []
+
+        node_ids = {node.id for node in self.nodes}
+        for edge in self.edges:
+            if edge.source not in node_ids:
+                errors.append(f"Edge {edge.id}: source '{edge.source}' not found")
+            if edge.target not in node_ids:
+                errors.append(f"Edge {edge.id}: target '{edge.target}' not found")
+
+        if self.entry_node not in node_ids:
+            errors.append(f"Entry node '{self.entry_node}' not found")
+
+        for terminal in self.terminal_nodes:
+            if terminal not in node_ids:
+                errors.append(f"Terminal node '{terminal}' not found")
+
+        for ep_id, node_id in self.entry_points.items():
+            if node_id not in node_ids:
+                errors.append(
+                    f"Entry point '{ep_id}' references unknown node '{node_id}'"
+                )
+
+        return {
+            "valid": len(errors) == 0,
+            "errors": errors,
+            "warnings": warnings,
+        }
+
+
+# Create default instance
+default_agent = DeepResearchAgent()

.claude/skills/hive-create/examples/deep_research_agent/config.py

@@ -0,0 +1,26 @@
+"""Runtime configuration."""
+
+from dataclasses import dataclass
+
+from framework.config import RuntimeConfig
+
+default_config = RuntimeConfig()
+
+
+@dataclass
+class AgentMetadata:
+    name: str = "Deep Research Agent"
+    version: str = "1.0.0"
+    description: str = (
+        "Interactive research agent that rigorously investigates topics through "
+        "multi-source search, quality evaluation, and synthesis - with TUI conversation "
+        "at key checkpoints for user guidance and feedback."
+    )
+    intro_message: str = (
+        "Hi! I'm your deep research assistant. Tell me a topic and I'll investigate it "
+        "thoroughly — searching multiple sources, evaluating quality, and synthesizing "
+        "a comprehensive report. What would you like me to research?"
+    )
+
+
+metadata = AgentMetadata()

.claude/skills/hive-create/examples/deep_research_agent/mcp_servers.json

@@ -1,8 +1,8 @@
 {
   "hive-tools": {
     "transport": "stdio",
-    "command": "python",
-    "args": ["mcp_server.py", "--stdio"],
+    "command": "uv",
+    "args": ["run", "python", "mcp_server.py", "--stdio"],
     "cwd": "../../tools",
     "description": "Hive tools MCP server providing web_search, web_scrape, and write_to_file"
   }

.claude/skills/hive-create/examples/deep_research_agent/nodes/__init__.py

@@ -0,0 +1,162 @@
+"""Node definitions for Deep Research Agent."""
+
+from framework.graph import NodeSpec
+
+# Node 1: Intake (client-facing)
+# Brief conversation to clarify what the user wants researched.
+intake_node = NodeSpec(
+    id="intake",
+    name="Research Intake",
+    description="Discuss the research topic with the user, clarify scope, and confirm direction",
+    node_type="event_loop",
+    client_facing=True,
+    input_keys=["topic"],
+    output_keys=["research_brief"],
+    system_prompt="""\
+You are a research intake specialist. The user wants to research a topic.
+Have a brief conversation to clarify what they need.
+
+**STEP 1 — Read and respond (text only, NO tool calls):**
+1. Read the topic provided
+2. If it's vague, ask 1-2 clarifying questions (scope, angle, depth)
+3. If it's already clear, confirm your understanding and ask the user to confirm
+
+Keep it short. Don't over-ask.
+
+**STEP 2 — After the user confirms, call set_output:**
+- set_output("research_brief", "A clear paragraph describing exactly what to research, \
+what questions to answer, what scope to cover, and how deep to go.")
+""",
+    tools=[],
+)
+
+# Node 2: Research
+# The workhorse — searches the web, fetches content, analyzes sources.
+# One node with both tools avoids the context-passing overhead of 5 separate nodes.
+research_node = NodeSpec(
+    id="research",
+    name="Research",
+    description="Search the web, fetch source content, and compile findings",
+    node_type="event_loop",
+    max_node_visits=3,
+    input_keys=["research_brief", "feedback"],
+    output_keys=["findings", "sources", "gaps"],
+    nullable_output_keys=["feedback"],
+    system_prompt="""\
+You are a research agent. Given a research brief, find and analyze sources.
+
+If feedback is provided, this is a follow-up round — focus on the gaps identified.
+
+Work in phases:
+1. **Search**: Use web_search with 3-5 diverse queries covering different angles.
+   Prioritize authoritative sources (.edu, .gov, established publications).
+2. **Fetch**: Use web_scrape on the most promising URLs (aim for 5-8 sources).
+   Skip URLs that fail. Extract the substantive content.
+3. **Analyze**: Review what you've collected. Identify key findings, themes,
+   and any contradictions between sources.
+
+Important:
+- Work in batches of 3-4 tool calls at a time to manage context
+- After each batch, assess whether you have enough material
+- Prefer quality over quantity — 5 good sources beat 15 thin ones
+- Track which URL each finding comes from (you'll need citations later)
+
+When done, use set_output:
+- set_output("findings", "Structured summary: key findings with source URLs for each claim. \
+Include themes, contradictions, and confidence levels.")
+- set_output("sources", [{"url": "...", "title": "...", "summary": "..."}])
+- set_output("gaps", "What aspects of the research brief are NOT well-covered yet, if any.")
+""",
+    tools=["web_search", "web_scrape", "load_data", "save_data", "list_data_files"],
+)
+
+# Node 3: Review (client-facing)
+# Shows the user what was found and asks whether to dig deeper or proceed.
+review_node = NodeSpec(
+    id="review",
+    name="Review Findings",
+    description="Present findings to user and decide whether to research more or write the report",
+    node_type="event_loop",
+    client_facing=True,
+    max_node_visits=3,
+    input_keys=["findings", "sources", "gaps", "research_brief"],
+    output_keys=["needs_more_research", "feedback"],
+    system_prompt="""\
+Present the research findings to the user clearly and concisely.
+
+**STEP 1 — Present (your first message, text only, NO tool calls):**
+1. **Summary** (2-3 sentences of what was found)
+2. **Key Findings** (bulleted, with confidence levels)
+3. **Sources Used** (count and quality assessment)
+4. **Gaps** (what's still unclear or under-covered)
+
+End by asking: Are they satisfied, or do they want deeper research? \
+Should we proceed to writing the final report?
+
+**STEP 2 — After the user responds, call set_output:**
+- set_output("needs_more_research", "true")  — if they want more
+- set_output("needs_more_research", "false") — if they're satisfied
+- set_output("feedback", "What the user wants explored further, or empty string")
+""",
+    tools=[],
+)
+
+# Node 4: Report (client-facing)
+# Writes an HTML report, serves the link to the user, and answers follow-ups.
+report_node = NodeSpec(
+    id="report",
+    name="Write & Deliver Report",
+    description="Write a cited HTML report from the findings and present it to the user",
+    node_type="event_loop",
+    client_facing=True,
+    input_keys=["findings", "sources", "research_brief"],
+    output_keys=["delivery_status"],
+    system_prompt="""\
+Write a comprehensive research report as an HTML file and present it to the user.
+
+**STEP 1 — Write the HTML report (tool calls, NO text to user yet):**
+
+1. Compose a complete, self-contained HTML document with embedded CSS styling.
+   Use a clean, readable design: max-width container, pleasant typography,
+   numbered citation links, a table of contents, and a references section.
+
+   Report structure inside the HTML:
+   - Title & date
+   - Executive Summary (2-3 paragraphs)
+   - Table of Contents
+   - Findings (organized by theme, with [n] citation links)
+   - Analysis (synthesis, implications, areas of debate)
+   - Conclusion (key takeaways, confidence assessment)
+   - References (numbered list with clickable URLs)
+
+   Requirements:
+   - Every factual claim must cite its source with [n] notation
+   - Be objective — present multiple viewpoints where sources disagree
+   - Distinguish well-supported conclusions from speculation
+   - Answer the original research questions from the brief
+
+2. Save the HTML file:
+   save_data(filename="report.html", data=<your_html>)
+
+3. Get the clickable link:
+   serve_file_to_user(filename="report.html", label="Research Report")
+
+**STEP 2 — Present the link to the user (text only, NO tool calls):**
+
+Tell the user the report is ready and include the file:// URI from
+serve_file_to_user so they can click it to open. Give a brief summary
+of what the report covers. Ask if they have questions.
+
+**STEP 3 — After the user responds:**
+- Answer follow-up questions from the research material
+- When the user is satisfied: set_output("delivery_status", "completed")
+""",
+    tools=["save_data", "serve_file_to_user", "load_data", "list_data_files"],
+)
+
+__all__ = [
+    "intake_node",
+    "research_node",
+    "review_node",
+    "report_node",
+]

.claude/skills/hive-credentials/SKILL.md

@@ -1,10 +1,10 @@
 ---
-name: setup-credentials
-description: Set up and install credentials for an agent. Detects missing credentials from agent config, collects them from the user, and stores them securely in the encrypted credential store at ~/.hive/credentials.
+name: hive-credentials
+description: Set up and install credentials for an agent. Detects missing credentials from agent config, collects them from the user, and stores them securely in the local encrypted store at ~/.hive/credentials.
 license: Apache-2.0
 metadata:
   author: hive
-  version: "2.1"
+  version: "2.3"
   type: utility
 ---
 
@@ -31,47 +31,50 @@ Determine which agent needs credentials. The user will either:
 
 Locate the agent's directory under `exports/{agent_name}/`.
 
-### Step 2: Detect Required Credentials
+### Step 2: Detect Missing Credentials
 
-Read the agent's configuration to determine which tools and node types it uses:
+Use the `check_missing_credentials` MCP tool to detect what the agent needs and what's already configured. This tool loads the agent, inspects its required tools and node types, maps them to credentials via `CREDENTIAL_SPECS`, and checks both the encrypted store and environment variables.
 
-```python
-from core.framework.runner import AgentRunner
-
-runner = AgentRunner.load("exports/{agent_name}")
-validation = runner.validate()
-
-# validation.missing_credentials contains env var names
-# validation.warnings contains detailed messages with help URLs
+```
+check_missing_credentials(agent_path="exports/{agent_name}")
 ```
 
-Alternatively, check the credential store directly:
+The tool returns a JSON response:
 
-```python
-from core.framework.credentials import CredentialStore
-
-# Use encrypted storage (default: ~/.hive/credentials)
-store = CredentialStore.with_encrypted_storage()
-
-# Check what's available
-available = store.list_credentials()
-print(f"Available credentials: {available}")
-
-# Check if specific credential exists
-if store.is_available("hubspot"):
-    print("HubSpot credential found")
-else:
-    print("HubSpot credential missing")
+```json
+{
+  "agent": "exports/{agent_name}",
+  "missing": [
+    {
+      "credential_name": "brave_search",
+      "env_var": "BRAVE_SEARCH_API_KEY",
+      "description": "Brave Search API key for web search",
+      "help_url": "https://brave.com/search/api/",
+      "tools": ["web_search"]
+    }
+  ],
+  "available": [
+    {
+      "credential_name": "anthropic",
+      "env_var": "ANTHROPIC_API_KEY",
+      "source": "encrypted_store"
+    }
+  ],
+  "total_missing": 1,
+  "ready": false
+}
 ```
 
-To see all known credential specs (for help URLs and setup instructions):
+**If `ready` is true (nothing missing):** Report all credentials as configured and skip Steps 3-5. Example:
 
-```python
-from aden_tools.credentials import CREDENTIAL_SPECS
-
-for name, spec in CREDENTIAL_SPECS.items():
-    print(f"{name}: env_var={spec.env_var}, aden={spec.aden_supported}")
 ```
+All required credentials are already configured:
+  ✓ anthropic (ANTHROPIC_API_KEY)
+  ✓ brave_search (BRAVE_SEARCH_API_KEY)
+Your agent is ready to run!
+```
+
+**If credentials are missing:** Continue to Step 3 with the `missing` list.
 
 ### Step 3: Present Auth Options for Each Missing Credential
 
@@ -104,8 +107,8 @@ Present the available options using AskUserQuestion:
 ```
 Choose how to configure HUBSPOT_ACCESS_TOKEN:
 
-  1) Aden Authorization Server (Recommended)
-     Secure OAuth2 flow via integration.adenhq.com
+  1) Aden Platform (OAuth) (Recommended)
+     Secure OAuth2 flow via hive.adenhq.com
      - Quick setup with automatic token refresh
      - No need to manage API keys manually
 
@@ -114,7 +117,7 @@ Choose how to configure HUBSPOT_ACCESS_TOKEN:
      - Requires creating a HubSpot Private App
      - Full control over scopes and permissions
 
-  3) Custom Credential Store (Advanced)
+  3) Local Credential Setup (Advanced)
      Programmatic configuration for CI/CD
      - For automated deployments
      - Requires manual API calls
@@ -122,7 +125,29 @@ Choose how to configure HUBSPOT_ACCESS_TOKEN:
 
 ### Step 4: Execute Auth Flow Based on User Choice
 
-#### Option 1: Aden Authorization Server
+#### Prerequisite: Ensure HIVE_CREDENTIAL_KEY Is Available
+
+Before storing any credentials, verify `HIVE_CREDENTIAL_KEY` is set (needed to encrypt/decrypt the local store). Check both the current session and shell config:
+
+```bash
+# Check current session
+printenv HIVE_CREDENTIAL_KEY > /dev/null 2>&1 && echo "session: set" || echo "session: not set"
+
+# Check shell config files
+for f in ~/.zshrc ~/.bashrc ~/.profile; do [ -f "$f" ] && grep -q 'HIVE_CREDENTIAL_KEY' "$f" && echo "$f"; done
+```
+
+- **In current session** — proceed to store credentials
+- **In shell config but NOT in current session** — run `source ~/.zshrc` (or `~/.bashrc`) first, then proceed
+- **Not set anywhere** — `EncryptedFileStorage` will auto-generate one. After storing, tell the user to persist it: `export HIVE_CREDENTIAL_KEY="{generated_key}"` in their shell profile
+
+> **⚠️ IMPORTANT: After adding `HIVE_CREDENTIAL_KEY` to the user's shell config, always display:**
+> ```
+> ⚠️  Environment variables were added to your shell config.
+>     Open a NEW TERMINAL for them to take effect outside this session.
+> ```
+
+#### Option 1: Aden Platform (OAuth)
 
 This is the recommended flow for supported integrations (HubSpot, etc.).
 
@@ -147,7 +172,7 @@ If not set, guide user to get one from Aden (this is where they do OAuth):
 from aden_tools.credentials import open_browser, get_aden_setup_url
 
 # Open browser to Aden - user will sign up and connect integrations there
-url = get_aden_setup_url()  # https://integration.adenhq.com/setup
+url = get_aden_setup_url()  # https://hive.adenhq.com
 success, msg = open_browser(url)
 
 print("Please sign in to Aden and connect your integrations (HubSpot, etc.).")
@@ -174,7 +199,7 @@ shell_type = detect_shell()  # 'bash', 'zsh', or 'unknown'
 success, config_path = add_env_var_to_shell_config(
     "ADEN_API_KEY",
     user_provided_key,
-    comment="Aden authorization server API key"
+    comment="Aden Platform (OAuth) API key"
 )
 
 if success:
@@ -183,6 +208,12 @@ if success:
     print(f"Run: {source_cmd}")
 ```
 
+> **⚠️ IMPORTANT: After adding `ADEN_API_KEY` to the user's shell config, always display:**
+> ```
+> ⚠️  Environment variables were added to your shell config.
+>     Open a NEW TERMINAL for them to take effect outside this session.
+> ```
+
 Also save to `~/.hive/configuration.json` for the framework:
 
 ```python
@@ -224,7 +255,7 @@ print(f"Synced credentials: {synced}")
 # If the required credential wasn't synced, the user hasn't authorized it on Aden yet
 if "hubspot" not in synced:
     print("HubSpot not found in your Aden account.")
-    print("Please visit https://integration.adenhq.com to connect HubSpot, then try again.")
+    print("Please visit https://hive.adenhq.com to connect HubSpot, then try again.")
 ```
 
 For more control over the sync process:
@@ -313,7 +344,7 @@ if not result.valid:
     # 2. Continue anyway (not recommended)
 ```
 
-**4.2d. Store in Encrypted Credential Store**
+**4.2d. Store in Local Encrypted Store**
 
 ```python
 from core.framework.credentials import CredentialStore, CredentialObject, CredentialKey
@@ -340,7 +371,7 @@ store.save_credential(cred)
 export HUBSPOT_ACCESS_TOKEN="the-value"
 ```
 
-#### Option 3: Custom Credential Store (Advanced)
+#### Option 3: Local Credential Setup (Advanced)
 
 For programmatic/CI/CD setups.
 
@@ -394,24 +425,38 @@ config_path.write_text(json.dumps(config, indent=2))
 
 ### Step 6: Verify All Credentials
 
-Run validation again to confirm everything is set:
+Use the `verify_credentials` MCP tool to confirm everything is properly configured:
 
-```python
-runner = AgentRunner.load("exports/{agent_name}")
-validation = runner.validate()
-assert not validation.missing_credentials, "Still missing credentials!"
+```
+verify_credentials(agent_path="exports/{agent_name}")
 ```
 
-Report the result to the user.
+The tool returns:
+
+```json
+{
+  "agent": "exports/{agent_name}",
+  "ready": true,
+  "missing_credentials": [],
+  "warnings": [],
+  "errors": []
+}
+```
+
+If `ready` is true, report success. If `missing_credentials` is non-empty, identify what failed and loop back to Step 3 for the remaining credentials.
 
 ## Health Check Reference
 
 Health checks validate credentials by making lightweight API calls:
 
-| Credential     | Endpoint                                | What It Checks                    |
-| -------------- | --------------------------------------- | --------------------------------- |
-| `hubspot`      | `GET /crm/v3/objects/contacts?limit=1`  | Bearer token validity, CRM scopes |
-| `brave_search` | `GET /res/v1/web/search?q=test&count=1` | API key validity                  |
+| Credential      | Endpoint                                | What It Checks                    |
+| --------------- | --------------------------------------- | --------------------------------- |
+| `anthropic`     | `POST /v1/messages`                     | API key validity                  |
+| `brave_search`  | `GET /res/v1/web/search?q=test&count=1` | API key validity                  |
+| `google_search` | `GET /customsearch/v1?q=test&num=1`     | API key + CSE ID validity         |
+| `github`        | `GET /user`                             | Token validity, user identity     |
+| `hubspot`       | `GET /crm/v3/objects/contacts?limit=1`  | Bearer token validity, CRM scopes |
+| `resend`        | `GET /domains`                          | API key validity                  |
 
 ```python
 from aden_tools.credentials import check_credential_health, HealthCheckResult
@@ -424,12 +469,17 @@ result: HealthCheckResult = check_credential_health("hubspot", token_value)
 
 ## Encryption Key (HIVE_CREDENTIAL_KEY)
 
-The encrypted credential store requires `HIVE_CREDENTIAL_KEY` to encrypt/decrypt credentials.
+The local encrypted store requires `HIVE_CREDENTIAL_KEY` to encrypt/decrypt credentials.
 
 - If the user doesn't have one, `EncryptedFileStorage` will auto-generate one and log it
-- The user MUST persist this key (e.g., in `~/.bashrc` or a secrets manager)
+- The user MUST persist this key (e.g., in `~/.bashrc`/`~/.zshrc` or a secrets manager)
 - Without this key, stored credentials cannot be decrypted
-- This is the ONLY secret that should live in `~/.bashrc` or environment config
+
+**Shell config rule:** Only TWO keys belong in shell config (`~/.zshrc`/`~/.bashrc`):
+- `HIVE_CREDENTIAL_KEY` — encryption key for the credential store
+- `ADEN_API_KEY` — Aden platform auth key (needed before the store can sync)
+
+All other API keys (Brave, Google, HubSpot, etc.) must go in the encrypted store only. **Never offer to add them to shell config.**
 
 If `HIVE_CREDENTIAL_KEY` is not set:
 
@@ -442,8 +492,9 @@ If `HIVE_CREDENTIAL_KEY` is not set:
 - **NEVER** log, print, or echo credential values in tool output
 - **NEVER** store credentials in plaintext files, git-tracked files, or agent configs
 - **NEVER** hardcode credentials in source code
+- **NEVER** offer to save API keys to shell config (`~/.zshrc`/`~/.bashrc`) — the **only** keys that belong in shell config are `HIVE_CREDENTIAL_KEY` and `ADEN_API_KEY`. All other credentials (Brave, Google, HubSpot, GitHub, Resend, etc.) go in the encrypted store only.
 - **ALWAYS** use `SecretStr` from Pydantic when handling credential values in Python
-- **ALWAYS** use the encrypted credential store (`~/.hive/credentials`) for persistence
+- **ALWAYS** use the local encrypted store (`~/.hive/credentials`) for persistence
 - **ALWAYS** run health checks before storing credentials (when possible)
 - **ALWAYS** verify credentials were stored by re-running validation, not by reading them back
 - When modifying `~/.bashrc` or `~/.zshrc`, confirm with the user first
@@ -456,7 +507,8 @@ All credential specs are defined in `tools/src/aden_tools/credentials/`:
 | ----------------- | ------------- | --------------------------------------------- | -------------- |
 | `llm.py`          | LLM Providers | `anthropic`                                   | No             |
 | `search.py`       | Search Tools  | `brave_search`, `google_search`, `google_cse` | No             |
-| `integrations.py` | Integrations  | `hubspot`                                     | Yes            |
+| `email.py`        | Email         | `resend`                                      | No             |
+| `integrations.py` | Integrations  | `github`, `hubspot`                           | No / Yes       |
 
 **Note:** Additional LLM providers (Cerebras, Groq, OpenAI) are handled by LiteLLM via environment
 variables (`CEREBRAS_API_KEY`, `GROQ_API_KEY`, `OPENAI_API_KEY`) but are not yet in CREDENTIAL_SPECS.
@@ -507,66 +559,82 @@ token = store.get_key("hubspot", "access_token")
 ## Example Session
 
 ```
-User: /setup-credentials for my hubspot-agent
+User: /hive-credentials for my research-agent
 
-Agent: Let me check what credentials your hubspot-agent needs.
+Agent: Let me check what credentials your research-agent needs.
 
-[Runs validation, finds ANTHROPIC_API_KEY and HUBSPOT_ACCESS_TOKEN missing]
+[Calls check_missing_credentials(agent_path="exports/research-agent")]
+→ Returns:
+  available: anthropic (encrypted_store), brave_search (encrypted_store)
+  missing: google_search (GOOGLE_API_KEY), google_cse (GOOGLE_CSE_ID)
+  ready: false
 
-Agent: Your hubspot-agent requires 2 credentials:
+Agent: 2 of 4 required credentials are already configured. Only Google Custom
+Search needs setup (2 values).
 
-  1. ANTHROPIC_API_KEY - Anthropic API key for LLM calls
-  2. HUBSPOT_ACCESS_TOKEN - HubSpot access token
+--- Setting up Google Custom Search (google_search + google_cse) ---
 
-Let's set these up one at a time.
+This requires two values that work together.
 
---- Setting up ANTHROPIC_API_KEY ---
+[Checks HIVE_CREDENTIAL_KEY before storing]
+$ printenv HIVE_CREDENTIAL_KEY > /dev/null 2>&1 && echo "set" || echo "not set"
+set
 
-This credential only supports direct API key entry.
+First, the Google API Key:
+1. Go to https://console.cloud.google.com/apis/credentials
+2. Create a new project (or select an existing one)
+3. Enable the "Custom Search API" from the API Library
+4. Go to Credentials > Create Credentials > API Key
+5. Copy the generated API key
 
-[Shows instructions for getting Anthropic API key]
-[AskUserQuestion: "Please provide your Anthropic API key:"]
-[User provides key]
-[Stores in credential store, exports to env]
-
---- Setting up HUBSPOT_ACCESS_TOKEN ---
-
-[AskUserQuestion with 3 options]
-
-Choose how to configure HUBSPOT_ACCESS_TOKEN:
-  1) Aden Authorization Server (Recommended)
-  2) Direct API Key
-  3) Custom Credential Store (Advanced)
-
-User: 1 (Aden)
-
-Agent: Great! Let me check if you have an Aden API key configured...
-
-[Checks for ADEN_API_KEY, not found]
-[Opens browser to integration.adenhq.com/setup]
-
-Agent: I've opened Aden's setup page. Please:
-  1. Sign in or create an account
-  2. Connect your HubSpot account (OAuth happens on Aden's site)
-  3. Copy the API key shown after setup
-
-[AskUserQuestion: "Please provide your Aden API key:"]
+[AskUserQuestion: "Please provide your Google API key:"]
 [User provides key]
 
-Agent: Would you like me to save this to your shell config (~/.zshrc) for future sessions?
+Now, the Custom Search Engine ID:
+1. Go to https://programmablesearchengine.google.com/controlpanel/all
+2. Click "Add" to create a new search engine
+3. Under "What to search", select "Search the entire web"
+4. Give your search engine a name
+5. Click "Create"
+6. Copy the Search Engine ID (cx value)
 
-[User approves]
-[Saves to ~/.zshrc and ~/.hive/configuration.json]
+[AskUserQuestion: "Please provide your Google CSE ID:"]
+[User provides ID]
 
-Agent: Let me sync your credentials from Aden...
+[Runs health check with both values - GET /customsearch/v1?q=test&num=1 → 200 OK]
+[Stores both in local encrypted store, exports to env]
 
-[Syncs credentials from Aden server - OAuth already done on Aden's side]
-[Runs health check]
+✓ Google Custom Search credentials valid
 
-Agent: HubSpot credentials validated successfully!
+[Calls verify_credentials(agent_path="exports/research-agent")]
+→ Returns: ready: true, missing_credentials: []
 
 All credentials are now configured:
-  - ANTHROPIC_API_KEY: Stored in encrypted credential store
-  - HUBSPOT_ACCESS_TOKEN: Synced from Aden (OAuth completed on Aden)
-  - Validation passed - your agent is ready to run!
+  ✓ anthropic (ANTHROPIC_API_KEY) — already in encrypted store
+  ✓ brave_search (BRAVE_SEARCH_API_KEY) — already in encrypted store
+  ✓ google_search (GOOGLE_API_KEY) — stored in encrypted store
+  ✓ google_cse (GOOGLE_CSE_ID) — stored in encrypted store
+
+┌─────────────────────────────────────────────────────────────────────────────┐
+│                      ✅ CREDENTIALS CONFIGURED                              │
+├─────────────────────────────────────────────────────────────────────────────┤
+│                                                                             │
+│     OPEN A NEW TERMINAL before running commands below.                      │
+│     Environment variables were saved to your shell config but               │
+│     only take effect in new terminal sessions.                              │
+│                                                                             │
+│  NEXT STEPS:                                                                │
+│                                                                             │
+│  1. RUN YOUR AGENT:                                                         │
+│                                                                             │
+│     hive tui                                                                │
+│                                                                             │
+│  2. IF YOU ENCOUNTER ISSUES, USE THE DEBUGGER:                              │
+│                                                                             │
+│     /hive-debugger                                                          │
+│                                                                             │
+│     The debugger analyzes runtime logs, identifies retry loops, tool        │
+│     failures, stalled execution, and provides actionable fix suggestions.   │
+│                                                                             │
+└─────────────────────────────────────────────────────────────────────────────┘
 ```

.claude/skills/hive-patterns/SKILL.md

@@ -0,0 +1,385 @@
+---
+name: hive-patterns
+description: Best practices, patterns, and examples for building goal-driven agents. Includes client-facing interaction, feedback edges, judge patterns, fan-out/fan-in, context management, and anti-patterns.
+license: Apache-2.0
+metadata:
+  author: hive
+  version: "2.0"
+  type: reference
+  part_of: hive
+---
+
+# Building Agents - Patterns & Best Practices
+
+Design patterns, examples, and best practices for building robust goal-driven agents.
+
+**Prerequisites:** Complete agent structure using `hive-create`.
+
+## Practical Example: Hybrid Workflow
+
+How to build a node using both direct file writes and optional MCP validation:
+
+```python
+# 1. WRITE TO FILE FIRST (Primary - makes it visible)
+node_code = '''
+search_node = NodeSpec(
+    id="search-web",
+    node_type="event_loop",
+    input_keys=["query"],
+    output_keys=["search_results"],
+    system_prompt="Search the web for: {query}. Use web_search, then call set_output to store results.",
+    tools=["web_search"],
+)
+'''
+
+Edit(
+    file_path="exports/research_agent/nodes/__init__.py",
+    old_string="# Nodes will be added here",
+    new_string=node_code
+)
+
+# 2. OPTIONALLY VALIDATE WITH MCP (Secondary - bookkeeping)
+validation = mcp__agent-builder__test_node(
+    node_id="search-web",
+    test_input='{"query": "python tutorials"}',
+    mock_llm_response='{"search_results": [...mock results...]}'
+)
+```
+
+**User experience:**
+
+- Immediately sees node in their editor (from step 1)
+- Gets validation feedback (from step 2)
+- Can edit the file directly if needed
+
+## Multi-Turn Interaction Patterns
+
+For agents needing multi-turn conversations with users, use `client_facing=True` on event_loop nodes.
+
+### Client-Facing Nodes
+
+A client-facing node streams LLM output to the user and blocks for user input between conversational turns. This replaces the old pause/resume pattern.
+
+```python
+# Client-facing node with STEP 1/STEP 2 prompt pattern
+intake_node = NodeSpec(
+    id="intake",
+    name="Intake",
+    description="Gather requirements from the user",
+    node_type="event_loop",
+    client_facing=True,
+    input_keys=["topic"],
+    output_keys=["research_brief"],
+    system_prompt="""\
+You are an intake specialist.
+
+**STEP 1 — Read and respond (text only, NO tool calls):**
+1. Read the topic provided
+2. If it's vague, ask 1-2 clarifying questions
+3. If it's clear, confirm your understanding
+
+**STEP 2 — After the user confirms, call set_output:**
+- set_output("research_brief", "Clear description of what to research")
+""",
+)
+
+# Internal node runs without user interaction
+research_node = NodeSpec(
+    id="research",
+    name="Research",
+    description="Search and analyze sources",
+    node_type="event_loop",
+    input_keys=["research_brief"],
+    output_keys=["findings", "sources"],
+    system_prompt="Research the topic using web_search and web_scrape...",
+    tools=["web_search", "web_scrape", "load_data", "save_data"],
+)
+```
+
+**How it works:**
+
+- Client-facing nodes stream LLM text to the user and block for input after each response
+- User input is injected via `node.inject_event(text)`
+- When the LLM calls `set_output` to produce structured outputs, the judge evaluates and ACCEPTs
+- Internal nodes (non-client-facing) run their entire loop without blocking
+- `set_output` is a synthetic tool — a turn with only `set_output` calls (no real tools) triggers user input blocking
+
+**STEP 1/STEP 2 pattern:** Always structure client-facing prompts with explicit phases. STEP 1 is text-only conversation. STEP 2 calls `set_output` after user confirmation. This prevents the LLM from calling `set_output` prematurely before the user responds.
+
+### When to Use client_facing
+
+| Scenario                            | client_facing | Why                    |
+| ----------------------------------- | :-----------: | ---------------------- |
+| Gathering user requirements         |      Yes      | Need user input        |
+| Human review/approval checkpoint    |      Yes      | Need human decision    |
+| Data processing (scanning, scoring) |      No       | Runs autonomously      |
+| Report generation                   |      No       | No user input needed   |
+| Final confirmation before action    |      Yes      | Need explicit approval |
+
+> **Legacy Note:** The `pause_nodes` / `entry_points` pattern still works for backward compatibility but `client_facing=True` is preferred for new agents.
+
+## Edge-Based Routing and Feedback Loops
+
+### Conditional Edge Routing
+
+Multiple conditional edges from the same source replace the old `router` node type. Each edge checks a condition on the node's output.
+
+```python
+# Node with mutually exclusive outputs
+review_node = NodeSpec(
+    id="review",
+    name="Review",
+    node_type="event_loop",
+    client_facing=True,
+    output_keys=["approved_contacts", "redo_extraction"],
+    nullable_output_keys=["approved_contacts", "redo_extraction"],
+    max_node_visits=3,
+    system_prompt="Present the contact list to the operator. If they approve, call set_output('approved_contacts', ...). If they want changes, call set_output('redo_extraction', 'true').",
+)
+
+# Forward edge (positive priority, evaluated first)
+EdgeSpec(
+    id="review-to-campaign",
+    source="review",
+    target="campaign-builder",
+    condition=EdgeCondition.CONDITIONAL,
+    condition_expr="output.get('approved_contacts') is not None",
+    priority=1,
+)
+
+# Feedback edge (negative priority, evaluated after forward edges)
+EdgeSpec(
+    id="review-feedback",
+    source="review",
+    target="extractor",
+    condition=EdgeCondition.CONDITIONAL,
+    condition_expr="output.get('redo_extraction') is not None",
+    priority=-1,
+)
+```
+
+**Key concepts:**
+
+- `nullable_output_keys`: Lists output keys that may remain unset. The node sets exactly one of the mutually exclusive keys per execution.
+- `max_node_visits`: Must be >1 on the feedback target (extractor) so it can re-execute. Default is 1.
+- `priority`: Positive = forward edge (evaluated first). Negative = feedback edge. The executor tries forward edges first; if none match, falls back to feedback edges.
+
+### Routing Decision Table
+
+| Pattern                | Old Approach            | New Approach                                  |
+| ---------------------- | ----------------------- | --------------------------------------------- |
+| Conditional branching  | `router` node           | Conditional edges with `condition_expr`       |
+| Binary approve/reject  | `pause_nodes` + resume  | `client_facing=True` + `nullable_output_keys` |
+| Loop-back on rejection | Manual entry_points     | Feedback edge with `priority=-1`              |
+| Multi-way routing      | Router with routes dict | Multiple conditional edges with priorities    |
+
+## Judge Patterns
+
+**Core Principle: The judge is the SOLE mechanism for acceptance decisions.** Never add ad-hoc framework gating to compensate for LLM behavior. If the LLM calls `set_output` prematurely, fix the system prompt or use a custom judge. Anti-patterns to avoid:
+
+- Output rollback logic
+- `_user_has_responded` flags
+- Premature set_output rejection
+- Interaction protocol injection into system prompts
+
+Judges control when an event_loop node's loop exits. Choose based on validation needs.
+
+### Implicit Judge (Default)
+
+When no judge is configured, the implicit judge ACCEPTs when:
+
+- The LLM finishes its response with no tool calls
+- All required output keys have been set via `set_output`
+
+Best for simple nodes where "all outputs set" is sufficient validation.
+
+### SchemaJudge
+
+Validates outputs against a Pydantic model. Use when you need structural validation.
+
+```python
+from pydantic import BaseModel
+
+class ScannerOutput(BaseModel):
+    github_users: list[dict]  # Must be a list of user objects
+
+class SchemaJudge:
+    def __init__(self, output_model: type[BaseModel]):
+        self._model = output_model
+
+    async def evaluate(self, context: dict) -> JudgeVerdict:
+        missing = context.get("missing_keys", [])
+        if missing:
+            return JudgeVerdict(
+                action="RETRY",
+                feedback=f"Missing output keys: {missing}. Use set_output to provide them.",
+            )
+        try:
+            self._model.model_validate(context["output_accumulator"])
+            return JudgeVerdict(action="ACCEPT")
+        except ValidationError as e:
+            return JudgeVerdict(action="RETRY", feedback=str(e))
+```
+
+### When to Use Which Judge
+
+| Judge           | Use When                              | Example                |
+| --------------- | ------------------------------------- | ---------------------- |
+| Implicit (None) | Output keys are sufficient validation | Simple data extraction |
+| SchemaJudge     | Need structural validation of outputs | API response parsing   |
+| Custom          | Domain-specific validation logic      | Score must be 0.0-1.0  |
+
+## Fan-Out / Fan-In (Parallel Execution)
+
+Multiple ON_SUCCESS edges from the same source trigger parallel execution. All branches run concurrently via `asyncio.gather()`.
+
+```python
+# Scanner fans out to Profiler and Scorer in parallel
+EdgeSpec(id="scanner-to-profiler", source="scanner", target="profiler",
+         condition=EdgeCondition.ON_SUCCESS)
+EdgeSpec(id="scanner-to-scorer", source="scanner", target="scorer",
+         condition=EdgeCondition.ON_SUCCESS)
+
+# Both fan in to Extractor
+EdgeSpec(id="profiler-to-extractor", source="profiler", target="extractor",
+         condition=EdgeCondition.ON_SUCCESS)
+EdgeSpec(id="scorer-to-extractor", source="scorer", target="extractor",
+         condition=EdgeCondition.ON_SUCCESS)
+```
+
+**Requirements:**
+
+- Parallel event_loop nodes must have **disjoint output_keys** (no key written by both)
+- Only one parallel branch may contain a `client_facing` node
+- Fan-in node receives outputs from all completed branches in shared memory
+
+## Context Management Patterns
+
+### Tiered Compaction
+
+EventLoopNode automatically manages context window usage with tiered compaction:
+
+1. **Pruning** — Old tool results replaced with compact placeholders (zero-cost, no LLM call)
+2. **Normal compaction** — LLM summarizes older messages
+3. **Aggressive compaction** — Keeps only recent messages + summary
+4. **Emergency** — Hard reset with tool history preservation
+
+### Spillover Pattern
+
+The framework automatically truncates large tool results and saves full content to a spillover directory. The LLM receives a truncation message with instructions to use `load_data` to read the full result.
+
+For explicit data management, use the data tools (real MCP tools, not synthetic):
+
+```python
+# save_data, load_data, list_data_files, serve_file_to_user are real MCP tools
+# data_dir is auto-injected by the framework — the LLM never sees it
+
+# Saving large results
+save_data(filename="sources.json", data=large_json_string)
+
+# Reading with pagination (line-based offset/limit)
+load_data(filename="sources.json", offset=0, limit=50)
+
+# Listing available files
+list_data_files()
+
+# Serving a file to the user as a clickable link
+serve_file_to_user(filename="report.html", label="Research Report")
+```
+
+Add data tools to nodes that handle large tool results:
+
+```python
+research_node = NodeSpec(
+    ...
+    tools=["web_search", "web_scrape", "load_data", "save_data", "list_data_files"],
+)
+```
+
+`data_dir` is a framework context parameter — auto-injected at call time. `GraphExecutor.execute()` sets it per-execution via `ToolRegistry.set_execution_context(data_dir=...)` (using `contextvars` for concurrency safety), ensuring it matches the session-scoped spillover directory.
+
+## Anti-Patterns
+
+### What NOT to Do
+
+- **Don't rely on `export_graph`** — Write files immediately, not at end
+- **Don't hide code in session** — Write to files as components are approved
+- **Don't wait to write files** — Agent visible from first step
+- **Don't batch everything** — Write incrementally, one component at a time
+- **Don't create too many thin nodes** — Prefer fewer, richer nodes (see below)
+- **Don't add framework gating for LLM behavior** — Fix prompts or use judges instead
+
+### Fewer, Richer Nodes
+
+A common mistake is splitting work into too many small single-purpose nodes. Each node boundary requires serializing outputs, losing in-context information, and adding edge complexity.
+
+| Bad (8 thin nodes)  | Good (4 rich nodes)                 |
+| ------------------- | ----------------------------------- |
+| parse-query         | intake (client-facing)              |
+| search-sources      | research (search + fetch + analyze) |
+| fetch-content       | review (client-facing)              |
+| evaluate-sources    | report (write + deliver)            |
+| synthesize-findings |                                     |
+| write-report        |                                     |
+| quality-check       |                                     |
+| save-report         |                                     |
+
+**Why fewer nodes are better:**
+
+- The LLM retains full context of its work within a single node
+- A research node that searches, fetches, and analyzes keeps all source material in its conversation history
+- Fewer edges means simpler graph and fewer failure points
+- Data tools (`save_data`/`load_data`) handle context window limits within a single node
+
+### MCP Tools - Correct Usage
+
+**MCP tools OK for:**
+
+- `test_node` — Validate node configuration with mock inputs
+- `validate_graph` — Check graph structure
+- `configure_loop` — Set event loop parameters
+- `create_session` — Track session state for bookkeeping
+
+**Just don't:** Use MCP as the primary construction method or rely on export_graph
+
+## Error Handling Patterns
+
+### Graceful Failure with Fallback
+
+```python
+edges = [
+    # Success path
+    EdgeSpec(id="api-success", source="api-call", target="process-results",
+             condition=EdgeCondition.ON_SUCCESS),
+    # Fallback on failure
+    EdgeSpec(id="api-to-fallback", source="api-call", target="fallback-cache",
+             condition=EdgeCondition.ON_FAILURE, priority=1),
+    # Report if fallback also fails
+    EdgeSpec(id="fallback-to-error", source="fallback-cache", target="report-error",
+             condition=EdgeCondition.ON_FAILURE, priority=1),
+]
+```
+
+## Handoff to Testing
+
+When agent is complete, transition to testing phase:
+
+### Pre-Testing Checklist
+
+- [ ] Agent structure validates: `uv run python -m agent_name validate`
+- [ ] All nodes defined in nodes/**init**.py
+- [ ] All edges connect valid nodes with correct priorities
+- [ ] Feedback edge targets have `max_node_visits > 1`
+- [ ] Client-facing nodes have meaningful system prompts
+- [ ] Agent can be imported: `from exports.agent_name import default_agent`
+
+## Related Skills
+
+- **hive-concepts** — Fundamental concepts (node types, edges, event loop architecture)
+- **hive-create** — Step-by-step building process
+- **hive-test** — Test and validate agents
+- **hive** — Complete workflow orchestrator
+
+---
+
+**Remember: Agent is actively constructed, visible the whole time. No hidden state. No surprise exports. Just transparent, incremental file building.**

.claude/skills/hive-test/SKILL.md

@@ -0,0 +1,940 @@
+---
+name: hive-test
+description: Iterative agent testing with session recovery. Execute, analyze, fix, resume from checkpoints. Use when testing an agent, debugging test failures, or verifying fixes without re-running from scratch.
+---
+
+# Agent Testing
+
+Test agents iteratively: execute, analyze failures, fix, resume from checkpoint, repeat.
+
+## When to Use
+
+- Testing a newly built agent against its goal
+- Debugging a failing agent iteratively
+- Verifying fixes without re-running expensive early nodes
+- Running final regression tests before deployment
+
+## Prerequisites
+
+1. Agent package at `exports/{agent_name}/` (built with `/hive-create`)
+2. Credentials configured (`/hive-credentials`)
+3. `ANTHROPIC_API_KEY` set (or appropriate LLM provider key)
+
+**Path distinction** (critical — don't confuse these):
+- `exports/{agent_name}/` — agent source code (edit here)
+- `~/.hive/agents/{agent_name}/` — runtime data: sessions, checkpoints, logs (read here)
+
+---
+
+## The Iterative Test Loop
+
+This is the core workflow. Don't re-run the entire agent when a late node fails — analyze, fix, and resume from the last clean checkpoint.
+
+```
+┌──────────────────────────────────────┐
+│ PHASE 1: Generate Test Scenarios     │
+│ Goal → synthetic test inputs + tests │
+└──────────────┬───────────────────────┘
+               ↓
+┌──────────────────────────────────────┐
+│ PHASE 2: Execute                     │◄────────────────┐
+│ Run agent (CLI or pytest)            │                 │
+└──────────────┬───────────────────────┘                 │
+               ↓                                         │
+          Pass? ──yes──► PHASE 6: Final Verification     │
+               │                                         │
+               no                                        │
+               ↓                                         │
+┌──────────────────────────────────────┐                 │
+│ PHASE 3: Analyze                     │                 │
+│ Session + runtime logs + checkpoints │                 │
+└──────────────┬───────────────────────┘                 │
+               ↓                                         │
+┌──────────────────────────────────────┐                 │
+│ PHASE 4: Fix                         │                 │
+│ Prompt / code / graph / goal         │                 │
+└──────────────┬───────────────────────┘                 │
+               ↓                                         │
+┌──────────────────────────────────────┐                 │
+│ PHASE 5: Recover & Resume            │─────────────────┘
+│ Checkpoint resume OR fresh re-run    │
+└──────────────────────────────────────┘
+```
+
+---
+
+### Phase 1: Generate Test Scenarios
+
+Create synthetic tests from the agent's goal, constraints, and success criteria.
+
+#### Step 1a: Read the goal
+
+```python
+# Read goal from agent.py
+Read(file_path="exports/{agent_name}/agent.py")
+# Extract the Goal definition and convert to JSON string
+```
+
+#### Step 1b: Get test guidelines
+
+```python
+# Get constraint test guidelines
+generate_constraint_tests(
+    goal_id="your-goal-id",
+    goal_json='{"id": "...", "constraints": [...]}',
+    agent_path="exports/{agent_name}"
+)
+
+# Get success criteria test guidelines
+generate_success_tests(
+    goal_id="your-goal-id",
+    goal_json='{"id": "...", "success_criteria": [...]}',
+    node_names="intake,research,review,report",
+    tool_names="web_search,web_scrape",
+    agent_path="exports/{agent_name}"
+)
+```
+
+These return `file_header`, `test_template`, `constraints_formatted`/`success_criteria_formatted`, and `test_guidelines`. They do NOT generate test code — you write the tests.
+
+#### Step 1c: Write tests
+
+```python
+Write(
+    file_path=result["output_file"],
+    content=result["file_header"] + "\n\n" + your_test_code
+)
+```
+
+#### Test writing rules
+
+- Every test MUST be `async` with `@pytest.mark.asyncio`
+- Every test MUST accept `runner, auto_responder, mock_mode` fixtures
+- Use `await auto_responder.start()` before running, `await auto_responder.stop()` in `finally`
+- Use `await runner.run(input_dict)` — this goes through AgentRunner → AgentRuntime → ExecutionStream
+- Access output via `result.output.get("key")` — NEVER `result.output["key"]`
+- `result.success=True` means no exception, NOT goal achieved — always check output
+- Write 8-15 tests total, not 30+
+- Each real test costs ~3 seconds + LLM tokens
+- NEVER use `default_agent.run()` — it bypasses the runtime (no sessions, no logs, client-facing nodes hang)
+
+#### Step 1d: Check existing tests
+
+Before generating, check if tests already exist:
+
+```python
+list_tests(
+    goal_id="your-goal-id",
+    agent_path="exports/{agent_name}"
+)
+```
+
+---
+
+### Phase 2: Execute
+
+Two execution paths, use the right one for your situation.
+
+#### Iterative debugging (for complex agents)
+
+Run the agent via CLI. This creates sessions with checkpoints at `~/.hive/agents/{agent_name}/sessions/`:
+
+```bash
+uv run hive run exports/{agent_name} --input '{"query": "test topic"}'
+```
+
+Sessions and checkpoints are saved automatically.
+
+**Client-facing nodes**: Agents with `client_facing=True` nodes (interactive conversation) work in headless mode when run from a real terminal — the agent streams output to stdout and reads user input from stdin via a `>>> ` prompt. In non-interactive shells (like Claude Code's Bash tool), client-facing nodes will hang because there is no stdin. For testing interactive agents from Claude Code, use `run_tests` with mock mode or have the user run the agent manually in their terminal.
+
+#### Automated regression (for CI or final verification)
+
+Use the `run_tests` MCP tool to run all pytest tests:
+
+```python
+run_tests(
+    goal_id="your-goal-id",
+    agent_path="exports/{agent_name}"
+)
+```
+
+Returns structured results:
+```json
+{
+  "overall_passed": false,
+  "summary": {"total": 12, "passed": 10, "failed": 2, "pass_rate": "83.3%"},
+  "test_results": [{"test_name": "test_success_source_diversity", "status": "failed"}],
+  "failures": [{"test_name": "test_success_source_diversity", "details": "..."}]
+}
+```
+
+**Options:**
+```python
+# Run only constraint tests
+run_tests(goal_id, agent_path, test_types='["constraint"]')
+
+# Stop on first failure
+run_tests(goal_id, agent_path, fail_fast=True)
+
+# Parallel execution
+run_tests(goal_id, agent_path, parallel=4)
+```
+
+**Note:** `run_tests` uses `AgentRunner` with `tmp_path` storage, so sessions are isolated per test run. For checkpoint-based recovery with persistent sessions, use CLI execution. Use `run_tests` for quick regression checks and final verification.
+
+---
+
+### Phase 3: Analyze Failures
+
+When a test fails, drill down systematically. Don't guess — use the tools.
+
+#### Step 3a: Get error category
+
+```python
+debug_test(
+    goal_id="your-goal-id",
+    test_name="test_success_source_diversity",
+    agent_path="exports/{agent_name}"
+)
+```
+
+Returns error category (`IMPLEMENTATION_ERROR`, `ASSERTION_FAILURE`, `TIMEOUT`, `IMPORT_ERROR`, `API_ERROR`) plus full traceback and suggestions.
+
+#### Step 3b: Find the failed session
+
+```python
+list_agent_sessions(
+    agent_work_dir="~/.hive/agents/{agent_name}",
+    status="failed",
+    limit=5
+)
+```
+
+Returns session list with IDs, timestamps, current_node (where it failed), execution_quality.
+
+#### Step 3c: Inspect session state
+
+```python
+get_agent_session_state(
+    agent_work_dir="~/.hive/agents/{agent_name}",
+    session_id="session_20260209_143022_abc12345"
+)
+```
+
+Returns execution path, which node was current, step count, timestamps — but excludes memory values (to avoid context bloat). Shows `memory_keys` and `memory_size` instead.
+
+#### Step 3d: Examine runtime logs (L2/L3)
+
+```python
+# L2: Per-node success/failure, retry counts
+query_runtime_log_details(
+    agent_work_dir="~/.hive/agents/{agent_name}",
+    run_id="session_20260209_143022_abc12345",
+    needs_attention_only=True
+)
+
+# L3: Exact LLM responses, tool call inputs/outputs
+query_runtime_log_raw(
+    agent_work_dir="~/.hive/agents/{agent_name}",
+    run_id="session_20260209_143022_abc12345",
+    node_id="research"
+)
+```
+
+#### Step 3e: Inspect memory data
+
+```python
+# See what data a node actually produced
+get_agent_session_memory(
+    agent_work_dir="~/.hive/agents/{agent_name}",
+    session_id="session_20260209_143022_abc12345",
+    key="research_results"
+)
+```
+
+#### Step 3f: Find recovery points
+
+```python
+list_agent_checkpoints(
+    agent_work_dir="~/.hive/agents/{agent_name}",
+    session_id="session_20260209_143022_abc12345",
+    is_clean="true"
+)
+```
+
+Returns checkpoint summaries with IDs, types (`node_start`, `node_complete`), which node, and `is_clean` flag. Clean checkpoints are safe resume points.
+
+#### Step 3g: Compare checkpoints (optional)
+
+To understand what changed between two points in execution:
+
+```python
+compare_agent_checkpoints(
+    agent_work_dir="~/.hive/agents/{agent_name}",
+    session_id="session_20260209_143022_abc12345",
+    checkpoint_id_before="cp_node_complete_research_143030",
+    checkpoint_id_after="cp_node_complete_review_143115"
+)
+```
+
+Returns memory diff (added/removed/changed keys) and execution path diff.
+
+---
+
+### Phase 4: Fix Based on Root Cause
+
+Use the analysis from Phase 3 to determine what to fix and where.
+
+| Root Cause | What to Fix | Where to Edit |
+|------------|------------|---------------|
+| **Prompt issue** — LLM produces wrong output format, misses instructions | Node `system_prompt` | `exports/{agent}/nodes/__init__.py` |
+| **Code bug** — TypeError, KeyError, logic error in Python | Agent code | `exports/{agent}/agent.py`, `nodes/__init__.py` |
+| **Graph issue** — wrong routing, missing edge, bad condition_expr | Edges, node config | `exports/{agent}/agent.py` |
+| **Tool issue** — MCP tool fails, wrong config, missing credential | Tool config | `exports/{agent}/mcp_servers.json`, `/hive-credentials` |
+| **Goal issue** — success criteria too strict/vague, wrong constraints | Goal definition | `exports/{agent}/agent.py` (goal section) |
+| **Test issue** — test expectations don't match actual agent behavior | Test code | `exports/{agent}/tests/test_*.py` |
+
+#### Fix strategies by error category
+
+**IMPLEMENTATION_ERROR** (TypeError, AttributeError, KeyError):
+```python
+# Read the failing code
+Read(file_path="exports/{agent_name}/nodes/__init__.py")
+
+# Fix the bug
+Edit(
+    file_path="exports/{agent_name}/nodes/__init__.py",
+    old_string="results.get('videos')",
+    new_string="(results or {}).get('videos', [])"
+)
+```
+
+**ASSERTION_FAILURE** (test assertions fail but agent ran successfully):
+- Check if the agent's output is actually wrong → fix the prompt
+- Check if the test's expectations are unrealistic → fix the test
+- Use `get_agent_session_memory` to see what the agent actually produced
+
+**TIMEOUT / STALL** (agent runs too long):
+- Check `node_visit_counts` for feedback loops hitting max_node_visits
+- Check L3 logs for tool calls that hang
+- Reduce `max_iterations` in loop_config or fix the prompt to converge faster
+
+**API_ERROR** (connection, rate limit, auth):
+- Verify credentials with `/hive-credentials`
+- Check MCP server configuration
+
+---
+
+### Phase 5: Recover & Resume
+
+After fixing the agent, decide whether to resume or re-run.
+
+#### When to resume from checkpoint
+
+Resume when ALL of these are true:
+- The fix is to a node that comes AFTER existing clean checkpoints
+- Clean checkpoints exist (from a CLI execution with checkpointing)
+- The early nodes are expensive (web scraping, API calls, long LLM chains)
+
+```bash
+# Resume from the last clean checkpoint before the failing node
+uv run hive run exports/{agent_name} \
+  --resume-session session_20260209_143022_abc12345 \
+  --checkpoint cp_node_complete_research_143030
+```
+
+This skips all nodes before the checkpoint and only re-runs the fixed node onward.
+
+#### When to re-run from scratch
+
+Re-run when ANY of these are true:
+- The fix is to the entry node or an early node
+- No checkpoints exist (e.g., agent was run via `run_tests`)
+- The agent is fast (2-3 nodes, completes in seconds)
+- You changed the graph structure (added/removed nodes/edges)
+
+```bash
+uv run hive run exports/{agent_name} --input '{"query": "test topic"}'
+```
+
+#### Inspecting a checkpoint before resuming
+
+```python
+get_agent_checkpoint(
+    agent_work_dir="~/.hive/agents/{agent_name}",
+    session_id="session_20260209_143022_abc12345",
+    checkpoint_id="cp_node_complete_research_143030"
+)
+```
+
+Returns the full checkpoint: shared_memory snapshot, execution_path, current_node, next_node, is_clean.
+
+#### Loop back to Phase 2
+
+After resuming or re-running, check if the fix worked. If not, go back to Phase 3.
+
+---
+
+### Phase 6: Final Verification
+
+Once the iterative fix loop converges (the agent produces correct output), run the full automated test suite:
+
+```python
+run_tests(
+    goal_id="your-goal-id",
+    agent_path="exports/{agent_name}"
+)
+```
+
+All tests should pass. If not, repeat the loop for remaining failures.
+
+---
+
+## Credential Requirements
+
+**CRITICAL: Testing requires ALL credentials the agent depends on.** This includes both the LLM API key AND any tool-specific credentials (HubSpot, Brave Search, etc.).
+
+### Prerequisites
+
+Before running agent tests, you MUST collect ALL required credentials from the user.
+
+**Step 1: LLM API Key (always required)**
+```bash
+export ANTHROPIC_API_KEY="your-key-here"
+```
+
+**Step 2: Tool-specific credentials (depends on agent's tools)**
+
+Inspect the agent's `mcp_servers.json` and tool configuration to determine which tools the agent uses, then check for all required credentials:
+
+```python
+from aden_tools.credentials import CredentialManager, CREDENTIAL_SPECS
+
+creds = CredentialManager()
+
+# Determine which tools the agent uses (from agent.json or mcp_servers.json)
+agent_tools = [...]  # e.g., ["hubspot_search_contacts", "web_search", ...]
+
+# Find all missing credentials for those tools
+missing = creds.get_missing_for_tools(agent_tools)
+```
+
+Common tool credentials:
+| Tool | Env Var | Help URL |
+|------|---------|----------|
+| HubSpot CRM | `HUBSPOT_ACCESS_TOKEN` | https://developers.hubspot.com/docs/api/private-apps |
+| Brave Search | `BRAVE_SEARCH_API_KEY` | https://brave.com/search/api/ |
+| Google Search | `GOOGLE_SEARCH_API_KEY` + `GOOGLE_SEARCH_CX` | https://developers.google.com/custom-search |
+
+**Why ALL credentials are required:**
+- Tests need to execute the agent's LLM nodes to validate behavior
+- Tools with missing credentials will return error dicts instead of real data
+- Mock mode bypasses everything, providing no confidence in real-world performance
+
+### Mock Mode Limitations
+
+Mock mode (`--mock` flag or `MOCK_MODE=1`) is **ONLY for structure validation**:
+
+- Validates graph structure (nodes, edges, connections)
+- Validates that `AgentRunner.load()` succeeds and the agent is importable
+- Does NOT execute event_loop agents — MockLLMProvider never calls `set_output`, so event_loop nodes loop forever
+- Does NOT test LLM reasoning, content quality, or constraint validation
+- Does NOT test real API integrations or tool use
+
+**Bottom line:** If you're testing whether an agent achieves its goal, you MUST use real credentials.
+
+### Enforcing Credentials in Tests
+
+When writing tests, **ALWAYS include credential checks**:
+
+```python
+import os
+import pytest
+from aden_tools.credentials import CredentialManager
+
+pytestmark = pytest.mark.skipif(
+    not CredentialManager().is_available("anthropic") and not os.environ.get("MOCK_MODE"),
+    reason="API key required for real testing. Set ANTHROPIC_API_KEY or use MOCK_MODE=1."
+)
+
+
+@pytest.fixture(scope="session", autouse=True)
+def check_credentials():
+    """Ensure ALL required credentials are set for real testing."""
+    creds = CredentialManager()
+    mock_mode = os.environ.get("MOCK_MODE")
+
+    if not creds.is_available("anthropic"):
+        if mock_mode:
+            print("\nRunning in MOCK MODE - structure validation only")
+        else:
+            pytest.fail(
+                "\nANTHROPIC_API_KEY not set!\n"
+                "Set API key: export ANTHROPIC_API_KEY='your-key-here'\n"
+                "Or run structure validation: MOCK_MODE=1 pytest exports/{agent}/tests/"
+            )
+
+    if not mock_mode:
+        agent_tools = []  # Update per agent
+        missing = creds.get_missing_for_tools(agent_tools)
+        if missing:
+            lines = ["\nMissing tool credentials!"]
+            for name in missing:
+                spec = creds.specs.get(name)
+                if spec:
+                    lines.append(f"  {spec.env_var} - {spec.description}")
+            pytest.fail("\n".join(lines))
+```
+
+### User Communication
+
+When the user asks to test an agent, **ALWAYS check for ALL credentials first**:
+
+1. **Identify the agent's tools** from `mcp_servers.json`
+2. **Check ALL required credentials** using `CredentialManager`
+3. **Ask the user to provide any missing credentials** before proceeding
+4. Collect ALL missing credentials in a single prompt — not one at a time
+
+---
+
+## Safe Test Patterns
+
+### OutputCleaner
+
+The framework automatically validates and cleans node outputs using a fast LLM at edge traversal time. Tests should still use safe patterns because OutputCleaner may not catch all issues.
+
+### Safe Access (REQUIRED)
+
+```python
+# UNSAFE - will crash on missing keys
+approval = result.output["approval_decision"]
+category = result.output["analysis"]["category"]
+
+# SAFE - use .get() with defaults
+output = result.output or {}
+approval = output.get("approval_decision", "UNKNOWN")
+
+# SAFE - type check before operations
+analysis = output.get("analysis", {})
+if isinstance(analysis, dict):
+    category = analysis.get("category", "unknown")
+
+# SAFE - handle JSON parsing trap (LLM response as string)
+import json
+recommendation = output.get("recommendation", "{}")
+if isinstance(recommendation, str):
+    try:
+        parsed = json.loads(recommendation)
+        if isinstance(parsed, dict):
+            approval = parsed.get("approval_decision", "UNKNOWN")
+    except json.JSONDecodeError:
+        approval = "UNKNOWN"
+elif isinstance(recommendation, dict):
+    approval = recommendation.get("approval_decision", "UNKNOWN")
+
+# SAFE - type check before iteration
+items = output.get("items", [])
+if isinstance(items, list):
+    for item in items:
+        ...
+```
+
+### Helper Functions for conftest.py
+
+```python
+import json
+import re
+
+def _parse_json_from_output(result, key):
+    """Parse JSON from agent output (framework may store full LLM response as string)."""
+    response_text = result.output.get(key, "")
+    json_text = re.sub(r'```json\s*|\s*```', '', response_text).strip()
+    try:
+        return json.loads(json_text)
+    except (json.JSONDecodeError, AttributeError, TypeError):
+        return result.output.get(key)
+
+def safe_get_nested(result, key_path, default=None):
+    """Safely get nested value from result.output."""
+    output = result.output or {}
+    current = output
+    for key in key_path:
+        if isinstance(current, dict):
+            current = current.get(key)
+        elif isinstance(current, str):
+            try:
+                json_text = re.sub(r'```json\s*|\s*```', '', current).strip()
+                parsed = json.loads(json_text)
+                if isinstance(parsed, dict):
+                    current = parsed.get(key)
+                else:
+                    return default
+            except json.JSONDecodeError:
+                return default
+        else:
+            return default
+    return current if current is not None else default
+
+# Make available in tests
+pytest.parse_json_from_output = _parse_json_from_output
+pytest.safe_get_nested = safe_get_nested
+```
+
+### ExecutionResult Fields
+
+**`result.success=True` means NO exception, NOT goal achieved**
+
+```python
+# WRONG
+assert result.success
+
+# RIGHT
+assert result.success, f"Agent failed: {result.error}"
+output = result.output or {}
+approval = output.get("approval_decision")
+assert approval == "APPROVED", f"Expected APPROVED, got {approval}"
+```
+
+All fields:
+- `success: bool` — Completed without exception (NOT goal achieved!)
+- `output: dict` — Complete memory snapshot (may contain raw strings)
+- `error: str | None` — Error message if failed
+- `steps_executed: int` — Number of nodes executed
+- `total_tokens: int` — Cumulative token usage
+- `total_latency_ms: int` — Total execution time
+- `path: list[str]` — Node IDs traversed (may repeat in feedback loops)
+- `paused_at: str | None` — Node ID if paused
+- `session_state: dict` — State for resuming
+- `node_visit_counts: dict[str, int]` — Visit counts per node (feedback loop testing)
+- `execution_quality: str` — "clean", "degraded", or "failed"
+
+### Test Count Guidance
+
+**Write 8-15 tests, not 30+**
+
+- 2-3 tests per success criterion
+- 1 happy path test
+- 1 boundary/edge case test
+- 1 error handling test (optional)
+
+Each real test costs ~3 seconds + LLM tokens. 12 tests = ~36 seconds, $0.12.
+
+---
+
+## Test Patterns
+
+### Happy Path
+```python
+@pytest.mark.asyncio
+async def test_happy_path(runner, auto_responder, mock_mode):
+    """Test normal successful execution."""
+    await auto_responder.start()
+    try:
+        result = await runner.run({"query": "python tutorials"})
+    finally:
+        await auto_responder.stop()
+    assert result.success, f"Agent failed: {result.error}"
+    output = result.output or {}
+    assert output.get("report"), "No report produced"
+```
+
+### Boundary Condition
+```python
+@pytest.mark.asyncio
+async def test_minimum_sources(runner, auto_responder, mock_mode):
+    """Test at minimum source threshold."""
+    await auto_responder.start()
+    try:
+        result = await runner.run({"query": "niche topic"})
+    finally:
+        await auto_responder.stop()
+    assert result.success, f"Agent failed: {result.error}"
+    output = result.output or {}
+    sources = output.get("sources", [])
+    if isinstance(sources, list):
+        assert len(sources) >= 3, f"Expected >= 3 sources, got {len(sources)}"
+```
+
+### Error Handling
+```python
+@pytest.mark.asyncio
+async def test_empty_input(runner, auto_responder, mock_mode):
+    """Test graceful handling of empty input."""
+    await auto_responder.start()
+    try:
+        result = await runner.run({"query": ""})
+    finally:
+        await auto_responder.stop()
+    # Agent should either fail gracefully or produce an error message
+    output = result.output or {}
+    assert not result.success or output.get("error"), "Should handle empty input"
+```
+
+### Feedback Loop
+```python
+@pytest.mark.asyncio
+async def test_feedback_loop_terminates(runner, auto_responder, mock_mode):
+    """Test that feedback loops don't run forever."""
+    await auto_responder.start()
+    try:
+        result = await runner.run({"query": "test"})
+    finally:
+        await auto_responder.stop()
+    visits = result.node_visit_counts or {}
+    for node_id, count in visits.items():
+        assert count <= 5, f"Node {node_id} visited {count} times — possible infinite loop"
+```
+
+---
+
+## MCP Tool Reference
+
+### Phase 1: Test Generation
+
+```python
+# Check existing tests
+list_tests(goal_id, agent_path)
+
+# Get constraint test guidelines (returns templates, NOT generated tests)
+generate_constraint_tests(goal_id, goal_json, agent_path)
+# Returns: output_file, file_header, test_template, constraints_formatted, test_guidelines
+
+# Get success criteria test guidelines
+generate_success_tests(goal_id, goal_json, node_names, tool_names, agent_path)
+# Returns: output_file, file_header, test_template, success_criteria_formatted, test_guidelines
+```
+
+### Phase 2: Execution
+
+```python
+# Automated regression (no checkpoints, fresh runs)
+run_tests(goal_id, agent_path, test_types='["all"]', parallel=-1, fail_fast=False)
+
+# Run only specific test types
+run_tests(goal_id, agent_path, test_types='["constraint"]')
+run_tests(goal_id, agent_path, test_types='["success"]')
+```
+
+```bash
+# Iterative debugging with checkpoints (via CLI)
+uv run hive run exports/{agent_name} --input '{"query": "test"}'
+```
+
+### Phase 3: Analysis
+
+```python
+# Debug a specific failed test
+debug_test(goal_id, test_name, agent_path)
+
+# Find failed sessions
+list_agent_sessions(agent_work_dir, status="failed", limit=5)
+
+# Inspect session state (excludes memory values)
+get_agent_session_state(agent_work_dir, session_id)
+
+# Inspect memory data
+get_agent_session_memory(agent_work_dir, session_id, key="research_results")
+
+# Runtime logs: L1 summaries
+query_runtime_logs(agent_work_dir, status="needs_attention")
+
+# Runtime logs: L2 per-node details
+query_runtime_log_details(agent_work_dir, run_id, needs_attention_only=True)
+
+# Runtime logs: L3 tool/LLM raw data
+query_runtime_log_raw(agent_work_dir, run_id, node_id="research")
+
+# Find clean checkpoints
+list_agent_checkpoints(agent_work_dir, session_id, is_clean="true")
+
+# Compare checkpoints (memory diff)
+compare_agent_checkpoints(agent_work_dir, session_id, cp_before, cp_after)
+```
+
+### Phase 5: Recovery
+
+```python
+# Inspect checkpoint before resuming
+get_agent_checkpoint(agent_work_dir, session_id, checkpoint_id)
+# Empty checkpoint_id = latest checkpoint
+```
+
+```bash
+# Resume from checkpoint via CLI (headless)
+uv run hive run exports/{agent_name} \
+  --resume-session {session_id} --checkpoint {checkpoint_id}
+```
+
+---
+
+## Anti-Patterns
+
+| Don't | Do Instead |
+|-------|-----------|
+| Use `default_agent.run()` in tests | Use `runner.run()` with `auto_responder` fixtures (goes through AgentRuntime) |
+| Re-run entire agent when a late node fails | Resume from last clean checkpoint |
+| Treat `result.success` as goal achieved | Check `result.output` for actual criteria |
+| Access `result.output["key"]` directly | Use `result.output.get("key")` |
+| Fix random things hoping tests pass | Analyze L2/L3 logs to find root cause first |
+| Write 30+ tests | Write 8-15 focused tests |
+| Skip credential check | Use `/hive-credentials` before testing |
+| Confuse `exports/` with `~/.hive/agents/` | Code in `exports/`, runtime data in `~/.hive/` |
+| Use `run_tests` for iterative debugging | Use headless CLI with checkpoints for iterative debugging |
+| Use headless CLI for final regression | Use `run_tests` for automated regression |
+| Use `--tui` from Claude Code | Use headless `run` command — TUI hangs in non-interactive shells |
+| Test client-facing nodes from Claude Code | Use mock mode, or have the user run the agent in their terminal |
+| Run tests without reading goal first | Always understand the goal before writing tests |
+| Skip Phase 3 analysis and guess | Use session + log tools to identify root cause |
+
+---
+
+## Example Walkthrough: Deep Research Agent
+
+A complete iteration showing the test loop for an agent with nodes: `intake → research → review → report`.
+
+### Phase 1: Generate tests
+
+```python
+# Read the goal
+Read(file_path="exports/deep_research_agent/agent.py")
+
+# Get success criteria test guidelines
+result = generate_success_tests(
+    goal_id="rigorous-interactive-research",
+    goal_json='{"id": "rigorous-interactive-research", "success_criteria": [{"id": "source-diversity", "target": ">=5"}, {"id": "citation-coverage", "target": "100%"}, {"id": "report-completeness", "target": "90%"}]}',
+    node_names="intake,research,review,report",
+    tool_names="web_search,web_scrape",
+    agent_path="exports/deep_research_agent"
+)
+
+# Write tests
+Write(
+    file_path=result["output_file"],
+    content=result["file_header"] + "\n\n" + test_code
+)
+```
+
+### Phase 2: First execution
+
+```python
+run_tests(
+    goal_id="rigorous-interactive-research",
+    agent_path="exports/deep_research_agent",
+    fail_fast=True
+)
+```
+
+Result: `test_success_source_diversity` fails — agent only found 2 sources instead of 5.
+
+### Phase 3: Analyze
+
+```python
+# Debug the failing test
+debug_test(
+    goal_id="rigorous-interactive-research",
+    test_name="test_success_source_diversity",
+    agent_path="exports/deep_research_agent"
+)
+# → ASSERTION_FAILURE: Expected >= 5 sources, got 2
+
+# Find the session
+list_agent_sessions(
+    agent_work_dir="~/.hive/agents/deep_research_agent",
+    status="completed",
+    limit=1
+)
+# → session_20260209_150000_abc12345
+
+# See what the research node produced
+get_agent_session_memory(
+    agent_work_dir="~/.hive/agents/deep_research_agent",
+    session_id="session_20260209_150000_abc12345",
+    key="research_results"
+)
+# → Only 2 web_search calls made, each returned 1 source
+
+# Check the LLM's behavior in the research node
+query_runtime_log_raw(
+    agent_work_dir="~/.hive/agents/deep_research_agent",
+    run_id="session_20260209_150000_abc12345",
+    node_id="research"
+)
+# → LLM called web_search only twice, then called set_output
+```
+
+Root cause: The research node's prompt doesn't tell the LLM to search for at least 5 diverse sources. It stops after the first couple of searches.
+
+### Phase 4: Fix the prompt
+
+```python
+Read(file_path="exports/deep_research_agent/nodes/__init__.py")
+
+Edit(
+    file_path="exports/deep_research_agent/nodes/__init__.py",
+    old_string='system_prompt="Search for information on the user\'s topic."',
+    new_string='system_prompt="Search for information on the user\'s topic. You MUST find at least 5 diverse, authoritative sources. Use multiple different search queries to ensure source diversity. Do not stop searching until you have at least 5 distinct sources."'
+)
+```
+
+### Phase 5: Resume from checkpoint
+
+For this example, the fix is to the `research` node. If we had run via CLI with checkpointing, we could resume from the checkpoint after `intake` to skip re-running intake:
+
+```bash
+# Check if clean checkpoint exists after intake
+list_agent_checkpoints(
+    agent_work_dir="~/.hive/agents/deep_research_agent",
+    session_id="session_20260209_150000_abc12345",
+    is_clean="true"
+)
+# → cp_node_complete_intake_150005
+
+# Resume from after intake, re-run research with fixed prompt
+uv run hive run exports/deep_research_agent \
+  --resume-session session_20260209_150000_abc12345 \
+  --checkpoint cp_node_complete_intake_150005
+```
+
+Or for this simple case (intake is fast), just re-run:
+
+```bash
+uv run hive run exports/deep_research_agent --input '{"topic": "test"}'
+```
+
+### Phase 6: Final verification
+
+```python
+run_tests(
+    goal_id="rigorous-interactive-research",
+    agent_path="exports/deep_research_agent"
+)
+# → All 12 tests pass
+```
+
+---
+
+## Test File Structure
+
+```
+exports/{agent_name}/
+├── agent.py              ← Agent to test (goal, nodes, edges)
+├── nodes/__init__.py     ← Node implementations (prompts, config)
+├── config.py             ← Agent configuration
+├── mcp_servers.json      ← Tool server config
+└── tests/
+    ├── conftest.py           ← Shared fixtures + safe access helpers
+    ├── test_constraints.py   ← Constraint tests
+    ├── test_success_criteria.py  ← Success criteria tests
+    └── test_edge_cases.py    ← Edge case tests
+```
+
+## Integration with Other Skills
+
+| Scenario | From | To | Action |
+|----------|------|----|--------|
+| Agent built, ready to test | `/hive-create` | `/hive-test` | Generate tests, start loop |
+| Prompt fix needed | `/hive-test` Phase 4 | Direct edit | Edit `nodes/__init__.py`, resume |
+| Goal definition wrong | `/hive-test` Phase 4 | `/hive-create` | Update goal, may need rebuild |
+| Missing credentials | `/hive-test` Phase 3 | `/hive-credentials` | Set up credentials |
+| Complex runtime failure | `/hive-test` Phase 3 | `/hive-debugger` | Deep L1/L2/L3 analysis |
+| All tests pass | `/hive-test` Phase 6 | Done | Agent validated |

.claude/skills/hive-test/examples/testing-youtube-agent.md

@@ -0,0 +1,333 @@
+# Example: Iterative Testing of a Research Agent
+
+This example walks through the full iterative test loop for a research agent that searches the web, reviews findings, and produces a cited report.
+
+## Agent Structure
+
+```
+exports/deep_research_agent/
+├── agent.py          # Goal + graph: intake → research → review → report
+├── nodes/__init__.py # Node definitions (system_prompt, input/output keys)
+├── config.py         # Model config
+├── mcp_servers.json  # Tools: web_search, web_scrape
+└── tests/            # Test files (we'll create these)
+```
+
+**Goal:** "Rigorous Interactive Research" — find 5+ diverse sources, cite every claim, produce a complete report.
+
+---
+
+## Phase 1: Generate Tests
+
+### Read the goal
+
+```python
+Read(file_path="exports/deep_research_agent/agent.py")
+# Extract: goal_id="rigorous-interactive-research"
+# success_criteria: source-diversity (>=5), citation-coverage (100%), report-completeness (90%)
+# constraints: no-hallucination, source-attribution
+```
+
+### Get test guidelines
+
+```python
+result = generate_success_tests(
+    goal_id="rigorous-interactive-research",
+    goal_json='{"id": "rigorous-interactive-research", "success_criteria": [{"id": "source-diversity", "description": "Use multiple diverse sources", "target": ">=5"}, {"id": "citation-coverage", "description": "Every claim cites its source", "target": "100%"}, {"id": "report-completeness", "description": "Report answers the research questions", "target": "90%"}]}',
+    node_names="intake,research,review,report",
+    tool_names="web_search,web_scrape",
+    agent_path="exports/deep_research_agent"
+)
+```
+
+### Write tests
+
+```python
+Write(
+    file_path="exports/deep_research_agent/tests/test_success_criteria.py",
+    content=result["file_header"] + '''
+
+@pytest.mark.asyncio
+async def test_success_source_diversity(runner, auto_responder, mock_mode):
+    """At least 5 diverse sources are found."""
+    await auto_responder.start()
+    try:
+        result = await runner.run({"query": "impact of remote work on productivity"})
+    finally:
+        await auto_responder.stop()
+    assert result.success, f"Agent failed: {result.error}"
+    output = result.output or {}
+    sources = output.get("sources", [])
+    if isinstance(sources, list):
+        assert len(sources) >= 5, f"Expected >= 5 sources, got {len(sources)}"
+
+@pytest.mark.asyncio
+async def test_success_citation_coverage(runner, auto_responder, mock_mode):
+    """Every factual claim in the report cites its source."""
+    await auto_responder.start()
+    try:
+        result = await runner.run({"query": "climate change effects on agriculture"})
+    finally:
+        await auto_responder.stop()
+    assert result.success, f"Agent failed: {result.error}"
+    output = result.output or {}
+    report = output.get("report", "")
+    # Check that report contains numbered references
+    assert "[1]" in str(report) or "[source" in str(report).lower(), "Report lacks citations"
+
+@pytest.mark.asyncio
+async def test_success_report_completeness(runner, auto_responder, mock_mode):
+    """Report addresses the original research question."""
+    query = "pros and cons of nuclear energy"
+    await auto_responder.start()
+    try:
+        result = await runner.run({"query": query})
+    finally:
+        await auto_responder.stop()
+    assert result.success, f"Agent failed: {result.error}"
+    output = result.output or {}
+    report = output.get("report", "")
+    assert len(str(report)) > 200, f"Report too short: {len(str(report))} chars"
+
+@pytest.mark.asyncio
+async def test_empty_query_handling(runner, auto_responder, mock_mode):
+    """Agent handles empty input gracefully."""
+    await auto_responder.start()
+    try:
+        result = await runner.run({"query": ""})
+    finally:
+        await auto_responder.stop()
+    output = result.output or {}
+    assert not result.success or output.get("error"), "Should handle empty query"
+
+@pytest.mark.asyncio
+async def test_feedback_loop_terminates(runner, auto_responder, mock_mode):
+    """Feedback loop between review and research terminates."""
+    await auto_responder.start()
+    try:
+        result = await runner.run({"query": "quantum computing basics"})
+    finally:
+        await auto_responder.stop()
+    visits = result.node_visit_counts or {}
+    for node_id, count in visits.items():
+        assert count <= 5, f"Node {node_id} visited {count} times"
+'''
+)
+```
+
+---
+
+## Phase 2: First Execution
+
+```python
+run_tests(
+    goal_id="rigorous-interactive-research",
+    agent_path="exports/deep_research_agent",
+    fail_fast=True
+)
+```
+
+**Result:**
+```json
+{
+  "overall_passed": false,
+  "summary": {"total": 5, "passed": 3, "failed": 2, "pass_rate": "60.0%"},
+  "failures": [
+    {"test_name": "test_success_source_diversity", "details": "AssertionError: Expected >= 5 sources, got 2"},
+    {"test_name": "test_success_citation_coverage", "details": "AssertionError: Report lacks citations"}
+  ]
+}
+```
+
+---
+
+## Phase 3: Analyze (Iteration 1)
+
+### Debug the first failure
+
+```python
+debug_test(
+    goal_id="rigorous-interactive-research",
+    test_name="test_success_source_diversity",
+    agent_path="exports/deep_research_agent"
+)
+# Category: ASSERTION_FAILURE — Expected >= 5 sources, got 2
+```
+
+### Find the session and inspect memory
+
+```python
+list_agent_sessions(
+    agent_work_dir="~/.hive/agents/deep_research_agent",
+    status="completed",
+    limit=1
+)
+# → session_20260209_150000_abc12345
+
+get_agent_session_memory(
+    agent_work_dir="~/.hive/agents/deep_research_agent",
+    session_id="session_20260209_150000_abc12345",
+    key="research_results"
+)
+# → Only 2 sources found. LLM stopped searching after 2 queries.
+```
+
+### Check LLM behavior in the research node
+
+```python
+query_runtime_log_raw(
+    agent_work_dir="~/.hive/agents/deep_research_agent",
+    run_id="session_20260209_150000_abc12345",
+    node_id="research"
+)
+# → LLM called web_search twice, got results, immediately called set_output.
+# → Prompt doesn't instruct it to find at least 5 sources.
+```
+
+**Root cause:** The research node's system_prompt doesn't specify minimum source requirements.
+
+---
+
+## Phase 4: Fix (Iteration 1)
+
+```python
+Read(file_path="exports/deep_research_agent/nodes/__init__.py")
+
+# Fix the research node prompt
+Edit(
+    file_path="exports/deep_research_agent/nodes/__init__.py",
+    old_string='system_prompt="Search for information on the user\'s topic using web search."',
+    new_string='system_prompt="Search for information on the user\'s topic using web search. You MUST find at least 5 diverse, authoritative sources. Use multiple different search queries with varied keywords. Do NOT call set_output until you have gathered at least 5 distinct sources from different domains."'
+)
+```
+
+---
+
+## Phase 5: Recover & Resume (Iteration 1)
+
+The fix is to the `research` node. Since this was a `run_tests` execution (no checkpoints), we re-run from scratch:
+
+```python
+run_tests(
+    goal_id="rigorous-interactive-research",
+    agent_path="exports/deep_research_agent",
+    fail_fast=True
+)
+```
+
+**Result:**
+```json
+{
+  "overall_passed": false,
+  "summary": {"total": 5, "passed": 4, "failed": 1, "pass_rate": "80.0%"},
+  "failures": [
+    {"test_name": "test_success_citation_coverage", "details": "AssertionError: Report lacks citations"}
+  ]
+}
+```
+
+Source diversity now passes. Citation coverage still fails.
+
+---
+
+## Phase 3: Analyze (Iteration 2)
+
+```python
+debug_test(
+    goal_id="rigorous-interactive-research",
+    test_name="test_success_citation_coverage",
+    agent_path="exports/deep_research_agent"
+)
+# Category: ASSERTION_FAILURE — Report lacks citations
+
+# Check what the report node produced
+list_agent_sessions(
+    agent_work_dir="~/.hive/agents/deep_research_agent",
+    status="completed",
+    limit=1
+)
+# → session_20260209_151500_def67890
+
+get_agent_session_memory(
+    agent_work_dir="~/.hive/agents/deep_research_agent",
+    session_id="session_20260209_151500_def67890",
+    key="report"
+)
+# → Report text exists but uses no numbered references.
+# → Sources are in memory but report node doesn't cite them.
+```
+
+**Root cause:** The report node's prompt doesn't instruct the LLM to include numbered citations.
+
+---
+
+## Phase 4: Fix (Iteration 2)
+
+```python
+Edit(
+    file_path="exports/deep_research_agent/nodes/__init__.py",
+    old_string='system_prompt="Write a comprehensive report based on the research findings."',
+    new_string='system_prompt="Write a comprehensive report based on the research findings. You MUST include numbered citations [1], [2], etc. for every factual claim. At the end, include a References section listing all sources with their URLs. Every claim must be traceable to a specific source."'
+)
+```
+
+---
+
+## Phase 5: Resume (Iteration 2)
+
+The fix is to the `report` node (the last node). To demonstrate checkpoint recovery, run via CLI:
+
+```bash
+# Run via CLI to get checkpoints
+uv run hive run exports/deep_research_agent --input '{"topic": "climate change effects"}'
+
+# After it runs, find the clean checkpoint before report
+list_agent_checkpoints(
+    agent_work_dir="~/.hive/agents/deep_research_agent",
+    session_id="session_20260209_152000_ghi34567",
+    is_clean="true"
+)
+# → cp_node_complete_review_152100 (after review, before report)
+
+# Resume — skips intake, research, review entirely
+uv run hive run exports/deep_research_agent \
+  --resume-session session_20260209_152000_ghi34567 \
+  --checkpoint cp_node_complete_review_152100
+```
+
+Only the `report` node re-runs with the fixed prompt, using research data from the checkpoint.
+
+---
+
+## Phase 6: Final Verification
+
+```python
+run_tests(
+    goal_id="rigorous-interactive-research",
+    agent_path="exports/deep_research_agent"
+)
+```
+
+**Result:**
+```json
+{
+  "overall_passed": true,
+  "summary": {"total": 5, "passed": 5, "failed": 0, "pass_rate": "100.0%"}
+}
+```
+
+All tests pass.
+
+---
+
+## Summary
+
+| Iteration | Failure | Root Cause | Fix | Recovery |
+|-----------|---------|------------|-----|----------|
+| 1 | Source diversity (2 < 5) | Research prompt too vague | Added "at least 5 sources" to prompt | Re-run (no checkpoints) |
+| 2 | No citations in report | Report prompt lacks citation instructions | Added citation requirements | Checkpoint resume (skipped 3 nodes) |
+
+**Key takeaways:**
+- Phase 3 analysis (session memory + L3 logs) identified root causes without guessing
+- Checkpoint recovery in iteration 2 saved time by skipping 3 expensive nodes
+- Final `run_tests` confirms all scenarios pass end-to-end

.claude/skills/hive/SKILL.md

@@ -1,32 +1,53 @@
 ---
-name: agent-workflow
-description: Complete workflow for building, implementing, and testing goal-driven agents. Orchestrates building-agents-* and testing-agent skills. Use when starting a new agent project, unsure which skill to use, or need end-to-end guidance.
+name: hive
+description: Complete workflow for building, implementing, and testing goal-driven agents. Orchestrates hive-* skills. Use when starting a new agent project, unsure which skill to use, or need end-to-end guidance.
 license: Apache-2.0
 metadata:
   author: hive
   version: "2.0"
   type: workflow-orchestrator
   orchestrates:
-    - building-agents-core
-    - building-agents-construction
-    - building-agents-patterns
-    - testing-agent
-    - setup-credentials
+    - hive-concepts
+    - hive-create
+    - hive-patterns
+    - hive-test
+    - hive-credentials
+    - hive-debugger
 ---
 
 # Agent Development Workflow
 
+**THIS IS AN EXECUTABLE WORKFLOW. DO NOT explore the codebase or read source files. ROUTE to the correct skill IMMEDIATELY.**
+
+When this skill is loaded, **ALWAYS use the AskUserQuestion tool** to present options:
+
+```
+Use AskUserQuestion with these options:
+- "Build a new agent" → Then invoke /hive-create
+- "Test an existing agent" → Then invoke /hive-test
+- "Learn agent concepts" → Then invoke /hive-concepts
+- "Optimize agent design" → Then invoke /hive-patterns
+- "Set up credentials" → Then invoke /hive-credentials
+- "Debug a failing agent" → Then invoke /hive-debugger
+- "Other" (please describe what you want to achieve)
+```
+
+**DO NOT:** Read source files, explore the codebase, search for code, or do any investigation before routing. The sub-skills handle all of that.
+
+---
+
 Complete Standard Operating Procedure (SOP) for building production-ready goal-driven agents.
 
 ## Overview
 
 This workflow orchestrates specialized skills to take you from initial concept to production-ready agent:
 
-1. **Understand Concepts** → `/building-agents-core` (optional)
-2. **Build Structure** → `/building-agents-construction`
-3. **Optimize Design** → `/building-agents-patterns` (optional)
-4. **Setup Credentials** → `/setup-credentials` (if agent uses tools requiring API keys)
-5. **Test & Validate** → `/testing-agent`
+1. **Understand Concepts** → `/hive-concepts` (optional)
+2. **Build Structure** → `/hive-create`
+3. **Optimize Design** → `/hive-patterns` (optional)
+4. **Setup Credentials** → `/hive-credentials` (if agent uses tools requiring API keys)
+5. **Test & Validate** → `/hive-test`
+6. **Debug Issues** → `/hive-debugger` (if agent fails at runtime)
 
 ## When to Use This Workflow
 
@@ -37,25 +58,26 @@ Use this meta-skill when:
 - Want consistent, repeatable agent builds
 
 **Skip this workflow** if:
-- You only need to test an existing agent → use `/testing-agent` directly
+- You only need to test an existing agent → use `/hive-test` directly
 - You know exactly which phase you're in → use specific skill directly
 
 ## Quick Decision Tree
 
 ```
-"Need to understand agent concepts" → building-agents-core
-"Build a new agent" → building-agents-construction
-"Optimize my agent design" → building-agents-patterns
-"Set up API keys for my agent" → setup-credentials
-"Test my agent" → testing-agent
+"Need to understand agent concepts" → hive-concepts
+"Build a new agent" → hive-create
+"Optimize my agent design" → hive-patterns
+"Need client-facing nodes or feedback loops" → hive-patterns
+"Set up API keys for my agent" → hive-credentials
+"Test my agent" → hive-test
+"My agent is failing/stuck/has errors" → hive-debugger
 "Not sure what I need" → Read phases below, then decide
 "Agent has structure but needs implementation" → See agent directory STATUS.md
 ```
 
 ## Phase 0: Understand Concepts (Optional)
 
-**Duration**: 5-10 minutes
-**Skill**: `/building-agents-core`
+**Skill**: `/hive-concepts`
 **Input**: Questions about agent architecture
 
 ### When to Use
@@ -63,12 +85,12 @@ Use this meta-skill when:
 - First time building an agent
 - Need to understand node types, edges, goals
 - Want to validate tool availability
-- Learning about pause/resume architecture
+- Learning about event loop architecture and client-facing nodes
 
 ### What This Phase Provides
 
 - Architecture overview (Python packages, not JSON)
-- Core concepts (Goal, Node, Edge, Pause/Resume)
+- Core concepts (Goal, Node, Edge, Event Loop, Judges)
 - Tool discovery and validation procedures
 - Workflow overview
 
@@ -76,9 +98,8 @@ Use this meta-skill when:
 
 ## Phase 1: Build Agent Structure
 
-**Duration**: 15-30 minutes
-**Skill**: `/building-agents-construction`
-**Input**: User requirements ("Build an agent that...")
+**Skill**: `/hive-create`
+**Input**: User requirements ("Build an agent that...") or a template to start from
 
 ### What This Phase Does
 
@@ -106,7 +127,7 @@ Creates the complete agent architecture:
 - ✅ 1-5 constraints defined
 - ✅ 5-10 nodes specified in nodes/__init__.py
 - ✅ 8-15 edges connecting workflow
-- ✅ Validated structure (passes `python -m agent_name validate`)
+- ✅ Validated structure (passes `uv run python -m agent_name validate`)
 - ✅ README.md with usage instructions
 - ✅ CLI commands (info, validate, run, shell)
 
@@ -120,7 +141,7 @@ You're ready for Phase 2 when:
 
 ### Common Outputs
 
-The building-agents-construction skill produces:
+The hive-create skill produces:
 ```
 exports/agent_name/
 ├── __init__.py          (package exports)
@@ -140,53 +161,52 @@ exports/agent_name/
 → You may need to add Python functions or MCP tools (not covered by current skills)
 
 **If want to optimize design:**
-→ Proceed to Phase 1.5 (building-agents-patterns)
+→ Proceed to Phase 1.5 (hive-patterns)
 
 **If ready to test:**
 → Proceed to Phase 2
 
 ## Phase 1.5: Optimize Design (Optional)
 
-**Duration**: 10-15 minutes
-**Skill**: `/building-agents-patterns`
+**Skill**: `/hive-patterns`
 **Input**: Completed agent structure
 
 ### When to Use
 
-- Want to add pause/resume functionality
+- Want to add client-facing blocking or feedback edges
+- Need judge patterns for output validation
+- Want fan-out/fan-in (parallel execution)
 - Need error handling patterns
-- Want to optimize performance
-- Need examples of complex routing
 - Want best practices guidance
 
 ### What This Phase Provides
 
-- Practical examples and patterns
-- Pause/resume architecture
-- Error handling strategies
+- Client-facing interaction patterns
+- Feedback edge routing with nullable output keys
+- Judge patterns (implicit, SchemaJudge)
+- Fan-out/fan-in parallel execution
+- Context management and spillover patterns
 - Anti-patterns to avoid
-- Performance optimization techniques
 
 **Skip this phase** if your agent design is straightforward.
 
 ## Phase 2: Test & Validate
 
-**Duration**: 20-40 minutes
-**Skill**: `/testing-agent`
+**Skill**: `/hive-test`
 **Input**: Working agent from Phase 1
 
 ### What This Phase Does
 
-Creates comprehensive test suite:
-- Constraint tests (verify hard requirements)
-- Success criteria tests (measure goal achievement)
-- Edge case tests (handle failures gracefully)
-- Integration tests (end-to-end workflows)
+Guides the creation and execution of a comprehensive test suite:
+- Constraint tests
+- Success criteria tests
+- Edge case tests
+- Integration tests
 
 ### Process
 
 1. **Analyze agent** - Read goal, constraints, success criteria
-2. **Generate tests** - Create pytest files in `exports/agent_name/tests/`
+2. **Generate tests** - The calling agent writes pytest files in `exports/agent_name/tests/` using hive-test guidelines and templates
 3. **User approval** - Review and approve each test
 4. **Run evaluation** - Execute tests and collect results
 5. **Debug failures** - Identify and fix issues
@@ -249,9 +269,9 @@ You're done when:
 
 ```
 User: "Build an agent that monitors files"
-→ Use /building-agents-construction
+→ Use /hive-create
 → Agent structure created
-→ Use /testing-agent
+→ Use /hive-test
 → Tests created and passing
 → Done: Production-ready agent
 ```
@@ -260,19 +280,32 @@ User: "Build an agent that monitors files"
 
 ```
 User: "Build an agent (first time)"
-→ Use /building-agents-core (understand concepts)
-→ Use /building-agents-construction (build structure)
-→ Use /building-agents-patterns (optimize design)
-→ Use /testing-agent (validate)
+→ Use /hive-concepts (understand concepts)
+→ Use /hive-create (build structure)
+→ Use /hive-patterns (optimize design)
+→ Use /hive-test (validate)
 → Done: Production-ready agent
 ```
 
+### Pattern 1c: Build from Template
+
+```
+User: "Build an agent based on the deep research template"
+→ Use /hive-create
+→ Select "From a template" path
+→ Pick template, name new agent
+→ Review/modify goal, nodes, graph
+→ Agent exported with customizations
+→ Use /hive-test
+→ Done: Customized agent
+```
+
 ### Pattern 2: Test Existing Agent
 
 ```
 User: "Test my agent at exports/my_agent"
 → Skip Phase 1
-→ Use /testing-agent directly
+→ Use /hive-test directly
 → Tests created
 → Done: Validated agent
 ```
@@ -281,58 +314,71 @@ User: "Test my agent at exports/my_agent"
 
 ```
 User: "Build an agent"
-→ Use /building-agents-construction (Phase 1)
+→ Use /hive-create (Phase 1)
 → Implementation needed (see STATUS.md)
 → [User implements functions]
-→ Use /testing-agent (Phase 2)
+→ Use /hive-test (Phase 2)
 → Tests reveal bugs
 → [Fix bugs manually]
 → Re-run tests
 → Done: Working agent
 ```
 
-### Pattern 4: Complex Agent with Patterns
+### Pattern 4: Agent with Review Loops and HITL Checkpoints
 
 ```
-User: "Build an agent with multi-turn conversations"
-→ Use /building-agents-core (learn pause/resume)
-→ Use /building-agents-construction (build structure)
-→ Use /building-agents-patterns (implement pause/resume pattern)
-→ Use /testing-agent (validate conversation flows)
-→ Done: Complex conversational agent
+User: "Build an agent with human review and feedback loops"
+→ Use /hive-concepts (learn event loop, client-facing nodes)
+→ Use /hive-create (build structure with feedback edges)
+→ Use /hive-patterns (implement client-facing + feedback patterns)
+→ Use /hive-test (validate review flows and edge routing)
+→ Done: Agent with HITL checkpoints and review loops
 ```
 
 ## Skill Dependencies
 
 ```
-agent-workflow (meta-skill)
+hive (meta-skill)
     │
-    ├── building-agents-core (foundational)
-    │   ├── Architecture concepts
-    │   ├── Node/Edge/Goal definitions
+    ├── hive-concepts (foundational)
+    │   ├── Architecture concepts (event loop, judges)
+    │   ├── Node types (event_loop, function)
+    │   ├── Edge routing and priority
     │   ├── Tool discovery procedures
     │   └── Workflow overview
     │
-    ├── building-agents-construction (procedural)
+    ├── hive-create (procedural)
     │   ├── Creates package structure
     │   ├── Defines goal
-    │   ├── Adds nodes incrementally
-    │   ├── Connects edges
+    │   ├── Adds nodes (event_loop, function)
+    │   ├── Connects edges with priority routing
     │   ├── Finalizes agent class
-    │   └── Requires: building-agents-core
+    │   └── Requires: hive-concepts
     │
-    ├── building-agents-patterns (reference)
-    │   ├── Best practices
-    │   ├── Pause/resume patterns
-    │   ├── Error handling
-    │   ├── Anti-patterns
-    │   └── Performance optimization
+    ├── hive-patterns (reference)
+    │   ├── Client-facing interaction patterns
+    │   ├── Feedback edges and review loops
+    │   ├── Judge patterns (implicit, SchemaJudge)
+    │   ├── Fan-out/fan-in parallel execution
+    │   └── Context management and anti-patterns
     │
-    └── testing-agent
-        ├── Reads agent goal
-        ├── Generates tests
-        ├── Runs evaluation
-        └── Reports results
+    ├── hive-credentials (utility)
+    │   ├── Detects missing credentials
+    │   ├── Offers auth method choices (Aden OAuth, direct API key)
+    │   ├── Stores securely in ~/.hive/credentials
+    │   └── Validates with health checks
+    │
+    ├── hive-test (validation)
+    │   ├── Reads agent goal
+    │   ├── Generates tests
+    │   ├── Runs evaluation
+    │   └── Reports results
+    │
+    └── hive-debugger (troubleshooting)
+        ├── Monitors runtime logs (L1/L2/L3)
+        ├── Identifies retry loops, tool failures
+        ├── Categorizes issues (10 categories)
+        └── Provides fix recommendations
 ```
 
 ## Troubleshooting
@@ -342,13 +388,13 @@ agent-workflow (meta-skill)
 - Check node IDs match between nodes/__init__.py and agent.py
 - Verify all edges reference valid node IDs
 - Ensure entry_node exists in nodes list
-- Run: `PYTHONPATH=core:exports python -m agent_name validate`
+- Run: `PYTHONPATH=exports uv run python -m agent_name validate`
 
 ### "Agent has structure but won't run"
 
 - Check for STATUS.md or IMPLEMENTATION_GUIDE.md in agent directory
 - Implementation may be needed (Python functions or MCP tools)
-- This is expected - building-agents-construction creates structure, not implementation
+- This is expected - hive-create creates structure, not implementation
 - See implementation guide for completion options
 
 ### "Tests are failing"
@@ -356,9 +402,16 @@ agent-workflow (meta-skill)
 - Review test output for specific failures
 - Check agent goal and success criteria
 - Verify constraints are met
-- Use `/testing-agent` to debug and iterate
+- Use `/hive-test` to debug and iterate
 - Fix agent code and re-run tests
 
+### "Agent is failing at runtime"
+
+- Use `/hive-debugger` to analyze runtime logs
+- The debugger identifies retry loops, tool failures, and stalled execution
+- Get actionable fix recommendations with code changes
+- Monitor the agent in real-time during TUI sessions
+
 ### "Not sure which phase I'm in"
 
 Run these checks:
@@ -368,7 +421,7 @@ Run these checks:
 ls exports/my_agent/agent.py
 
 # Check if it validates
-PYTHONPATH=core:exports python -m my_agent validate
+PYTHONPATH=exports uv run python -m my_agent validate
 
 # Check if tests exist
 ls exports/my_agent/tests/
@@ -417,10 +470,10 @@ You're done with the workflow when:
 
 ## Additional Resources
 
-- **building-agents-core**: See `.claude/skills/building-agents-core/SKILL.md`
-- **building-agents-construction**: See `.claude/skills/building-agents-construction/SKILL.md`
-- **building-agents-patterns**: See `.claude/skills/building-agents-patterns/SKILL.md`
-- **testing-agent**: See `.claude/skills/testing-agent/SKILL.md`
+- **hive-concepts**: See `.claude/skills/hive-concepts/SKILL.md`
+- **hive-create**: See `.claude/skills/hive-create/SKILL.md`
+- **hive-patterns**: See `.claude/skills/hive-patterns/SKILL.md`
+- **hive-test**: See `.claude/skills/hive-test/SKILL.md`
 - **Agent framework docs**: See `core/README.md`
 - **Example agents**: See `exports/` directory
 
@@ -428,36 +481,46 @@ You're done with the workflow when:
 
 This workflow provides a proven path from concept to production-ready agent:
 
-1. **Learn** with `/building-agents-core` → Understand fundamentals (optional)
-2. **Build** with `/building-agents-construction` → Get validated structure
-3. **Optimize** with `/building-agents-patterns` → Apply best practices (optional)
-4. **Test** with `/testing-agent` → Get verified functionality
+1. **Learn** with `/hive-concepts` → Understand fundamentals (optional)
+2. **Build** with `/hive-create` → Get validated structure
+3. **Optimize** with `/hive-patterns` → Apply best practices (optional)
+4. **Configure** with `/hive-credentials` → Set up API keys (if needed)
+5. **Test** with `/hive-test` → Get verified functionality
+6. **Debug** with `/hive-debugger` → Fix runtime issues (if needed)
 
 The workflow is **flexible** - skip phases as needed, iterate freely, and adapt to your specific requirements. The goal is **production-ready agents** built with **consistent, repeatable processes**.
 
 ## Skill Selection Guide
 
-**Choose building-agents-core when:**
+**Choose hive-concepts when:**
 - First time building agents
-- Need to understand architecture
+- Need to understand event loop architecture
 - Validating tool availability
-- Learning about node types and edges
+- Learning about node types, edges, and judges
 
-**Choose building-agents-construction when:**
+**Choose hive-create when:**
 - Actually building an agent
 - Have clear requirements
 - Ready to write code
 - Want step-by-step guidance
+- Want to start from an existing template and customize it
 
-**Choose building-agents-patterns when:**
+**Choose hive-patterns when:**
 - Agent structure complete
-- Need advanced patterns
-- Implementing pause/resume
-- Optimizing performance
+- Need client-facing nodes or feedback edges
+- Implementing review loops or fan-out/fan-in
+- Want judge patterns or context management
 - Want best practices
 
-**Choose testing-agent when:**
+**Choose hive-test when:**
 - Agent structure complete
 - Ready to validate functionality
 - Need comprehensive test coverage
-- Debugging agent behavior
+- Testing feedback loops, output keys, or fan-out
+
+**Choose hive-debugger when:**
+- Agent is failing or stuck at runtime
+- Seeing retry loops or escalations
+- Tool calls are failing
+- Need to understand why a node isn't completing
+- Want real-time monitoring of agent execution

.claude/skills/hive/examples/file-monitor-example.md

@@ -1,6 +1,6 @@
 # Example: File Monitor Agent
 
-This example shows the complete agent-workflow in action for building a file monitoring agent.
+This example shows the complete /hive workflow in action for building a file monitoring agent.
 
 ## Initial Request
 
@@ -12,7 +12,7 @@ User: "Build an agent that monitors ~/Downloads and copies new files to ~/Docume
 
 ### Step 1: Create Structure
 
-Agent invokes `/building-agents` skill and:
+Agent invokes `/hive-create` skill and:
 
 1. Creates `exports/file_monitor_agent/` package
 2. Writes skeleton files (__init__.py, __main__.py, agent.py, etc.)
@@ -75,10 +75,10 @@ initialize → list → identify → check
 ### Step 5: Finalize
 
 ```bash
-$ PYTHONPATH=core:exports python -m file_monitor_agent validate
+$ PYTHONPATH=exports uv run python -m file_monitor_agent validate
 ✓ Agent is valid
 
-$ PYTHONPATH=core:exports python -m file_monitor_agent info
+$ PYTHONPATH=exports uv run python -m file_monitor_agent info
 Agent: File Monitor & Copy Agent
 Nodes: 7
 Edges: 8
@@ -107,7 +107,7 @@ exports/file_monitor_agent/
 
 ### Step 1: Analyze Agent
 
-Agent invokes `/testing-agent` skill and:
+Agent invokes `/hive-test` skill and:
 
 1. Reads goal from `exports/file_monitor_agent/agent.py`
 2. Identifies 4 success criteria to test
@@ -131,7 +131,7 @@ Tests approved incrementally by user.
 ### Step 3: Run Tests
 
 ```bash
-$ PYTHONPATH=core:exports pytest exports/file_monitor_agent/tests/
+$ PYTHONPATH=exports uv run pytest exports/file_monitor_agent/tests/
 
 test_constraints.py::test_preserves_originals     PASSED
 test_constraints.py::test_handles_errors          PASSED
@@ -162,7 +162,7 @@ test_edge_cases.py::test_large_files              PASSED
 ./RUN_AGENT.sh
 
 # Or manually
-PYTHONPATH=core:exports:tools/src python -m file_monitor_agent run
+PYTHONPATH=exports uv run python -m file_monitor_agent run
 ```
 
 **Capabilities:**

.claude/skills/testing-agent/examples/testing-youtube-agent.md

@@ -1,351 +0,0 @@
-# Example: Testing a YouTube Research Agent
-
-This example walks through testing a YouTube research agent that finds relevant videos based on a topic.
-
-## Prerequisites
-
-- Agent built with building-agents skill at `exports/youtube-research/`
-- Goal defined with success criteria and constraints
-
-## Step 1: Load the Goal
-
-First, load the goal that was defined during the Goal stage:
-
-```json
-{
-    "id": "youtube-research",
-    "name": "YouTube Research Agent",
-    "description": "Find relevant YouTube videos on a given topic",
-    "success_criteria": [
-        {
-            "id": "find_videos",
-            "description": "Find 3-5 relevant videos",
-            "metric": "video_count",
-            "target": "3-5",
-            "weight": 1.0
-        },
-        {
-            "id": "relevance",
-            "description": "Videos must be relevant to the topic",
-            "metric": "relevance_score",
-            "target": ">0.8",
-            "weight": 0.8
-        }
-    ],
-    "constraints": [
-        {
-            "id": "api_limits",
-            "description": "Must not exceed YouTube API rate limits",
-            "constraint_type": "hard",
-            "category": "technical"
-        },
-        {
-            "id": "content_safety",
-            "description": "Must filter out inappropriate content",
-            "constraint_type": "hard",
-            "category": "safety"
-        }
-    ]
-}
-```
-
-## Step 2: Get Constraint Test Guidelines
-
-During the Goal stage (or early Eval), get test guidelines for constraints:
-
-```python
-result = generate_constraint_tests(
-    goal_id="youtube-research",
-    goal_json='<goal JSON above>',
-    agent_path="exports/youtube-research"
-)
-```
-
-**The result contains guidelines (not generated tests):**
-- `output_file`: Where to write tests
-- `file_header`: Imports and fixtures to use
-- `test_template`: Format for test functions
-- `constraints_formatted`: The constraints to test
-- `test_guidelines`: Rules for writing tests
-
-## Step 3: Write Constraint Tests
-
-Using the guidelines, write tests directly with the Write tool:
-
-```python
-# Write constraint tests using the provided file_header and guidelines
-Write(
-    file_path="exports/youtube-research/tests/test_constraints.py",
-    content='''
-"""Constraint tests for youtube-research agent."""
-
-import os
-import pytest
-from exports.youtube_research import default_agent
-
-
-pytestmark = pytest.mark.skipif(
-    not os.environ.get("ANTHROPIC_API_KEY") and not os.environ.get("MOCK_MODE"),
-    reason="API key required for real testing."
-)
-
-
-@pytest.mark.asyncio
-async def test_constraint_api_limits_respected():
-    """Verify API rate limits are not exceeded."""
-    import time
-    mock_mode = bool(os.environ.get("MOCK_MODE"))
-
-    for i in range(10):
-        result = await default_agent.run({"topic": f"test_{i}"}, mock_mode=mock_mode)
-        time.sleep(0.1)
-
-    # Should complete without rate limit errors
-    assert "rate limit" not in str(result).lower()
-
-
-@pytest.mark.asyncio
-async def test_constraint_content_safety_filter():
-    """Verify inappropriate content is filtered."""
-    mock_mode = bool(os.environ.get("MOCK_MODE"))
-    result = await default_agent.run({"topic": "general topic"}, mock_mode=mock_mode)
-
-    for video in result.videos:
-        assert video.safe_for_work is True
-        assert video.age_restricted is False
-'''
-)
-```
-
-## Step 4: Get Success Criteria Test Guidelines
-
-After the agent is built, get success criteria test guidelines:
-
-```python
-result = generate_success_tests(
-    goal_id="youtube-research",
-    goal_json='<goal JSON>',
-    node_names="search_node,filter_node,rank_node,format_node",
-    tool_names="youtube_search,video_details,channel_info",
-    agent_path="exports/youtube-research"
-)
-```
-
-## Step 5: Write Success Criteria Tests
-
-Using the guidelines, write success criteria tests:
-
-```python
-Write(
-    file_path="exports/youtube-research/tests/test_success_criteria.py",
-    content='''
-"""Success criteria tests for youtube-research agent."""
-
-import os
-import pytest
-from exports.youtube_research import default_agent
-
-
-pytestmark = pytest.mark.skipif(
-    not os.environ.get("ANTHROPIC_API_KEY") and not os.environ.get("MOCK_MODE"),
-    reason="API key required for real testing."
-)
-
-
-@pytest.mark.asyncio
-async def test_find_videos_happy_path():
-    """Test finding videos for a common topic."""
-    mock_mode = bool(os.environ.get("MOCK_MODE"))
-    result = await default_agent.run({"topic": "machine learning"}, mock_mode=mock_mode)
-
-    assert result.success
-    assert 3 <= len(result.videos) <= 5
-    assert all(v.title for v in result.videos)
-    assert all(v.video_id for v in result.videos)
-
-
-@pytest.mark.asyncio
-async def test_find_videos_minimum_boundary():
-    """Test at minimum threshold (3 videos)."""
-    mock_mode = bool(os.environ.get("MOCK_MODE"))
-    result = await default_agent.run({"topic": "niche topic xyz"}, mock_mode=mock_mode)
-
-    assert len(result.videos) >= 3
-
-
-@pytest.mark.asyncio
-async def test_relevance_score_threshold():
-    """Test relevance scoring meets threshold."""
-    mock_mode = bool(os.environ.get("MOCK_MODE"))
-    result = await default_agent.run({"topic": "python programming"}, mock_mode=mock_mode)
-
-    for video in result.videos:
-        assert video.relevance_score > 0.8
-
-
-@pytest.mark.asyncio
-async def test_find_videos_no_results_graceful():
-    """Test graceful handling of no results."""
-    mock_mode = bool(os.environ.get("MOCK_MODE"))
-    result = await default_agent.run({"topic": "xyznonexistent123"}, mock_mode=mock_mode)
-
-    # Should not crash, return empty or message
-    assert result.videos == [] or result.message
-'''
-)
-```
-
-## Step 6: Run All Tests
-
-Execute all tests:
-
-```python
-result = run_tests(
-    goal_id="youtube-research",
-    agent_path="exports/youtube-research",
-    test_types='["all"]',
-    parallel=4
-)
-```
-
-**Results:**
-
-```json
-{
-    "goal_id": "youtube-research",
-    "overall_passed": false,
-    "summary": {
-        "total": 6,
-        "passed": 5,
-        "failed": 1,
-        "pass_rate": "83.3%"
-    },
-    "duration_ms": 4521,
-    "results": [
-        {"test_id": "test_constraint_api_001", "passed": true, "duration_ms": 1234},
-        {"test_id": "test_constraint_content_001", "passed": true, "duration_ms": 456},
-        {"test_id": "test_success_001", "passed": true, "duration_ms": 789},
-        {"test_id": "test_success_002", "passed": true, "duration_ms": 654},
-        {"test_id": "test_success_003", "passed": true, "duration_ms": 543},
-        {"test_id": "test_success_004", "passed": false, "duration_ms": 845,
-         "error_category": "IMPLEMENTATION_ERROR",
-         "error_message": "TypeError: 'NoneType' object has no attribute 'videos'"}
-    ]
-}
-```
-
-## Step 7: Debug the Failed Test
-
-```python
-result = debug_test(
-    goal_id="youtube-research",
-    test_name="test_find_videos_no_results_graceful",
-    agent_path="exports/youtube-research"
-)
-```
-
-**Debug Output:**
-
-```json
-{
-    "test_id": "test_success_004",
-    "test_name": "test_find_videos_no_results_graceful",
-    "input": {"topic": "xyznonexistent123"},
-    "expected": "Empty list or message",
-    "actual": {"error": "TypeError: 'NoneType' object has no attribute 'videos'"},
-    "passed": false,
-    "error_message": "TypeError: 'NoneType' object has no attribute 'videos'",
-    "error_category": "IMPLEMENTATION_ERROR",
-    "stack_trace": "Traceback (most recent call last):\n  File \"filter_node.py\", line 42\n    for video in result.videos:\nTypeError: 'NoneType' object has no attribute 'videos'",
-    "logs": [
-        {"timestamp": "2026-01-20T10:00:01", "node": "search_node", "level": "INFO", "msg": "Searching for: xyznonexistent123"},
-        {"timestamp": "2026-01-20T10:00:02", "node": "search_node", "level": "WARNING", "msg": "No results found"},
-        {"timestamp": "2026-01-20T10:00:02", "node": "filter_node", "level": "ERROR", "msg": "NoneType error"}
-    ],
-    "runtime_data": {
-        "execution_path": ["start", "search_node", "filter_node"],
-        "node_outputs": {
-            "search_node": null
-        }
-    },
-    "suggested_fix": "Add null check in filter_node before accessing .videos attribute",
-    "iteration_guidance": {
-        "stage": "Agent",
-        "action": "Fix the code in nodes/edges",
-        "restart_required": false,
-        "description": "The goal is correct, but filter_node doesn't handle null results from search_node."
-    }
-}
-```
-
-## Step 8: Iterate Based on Category
-
-Since this is an **IMPLEMENTATION_ERROR**, we:
-
-1. **Don't restart** the Goal → Agent → Eval flow
-2. **Fix the agent** using building-agents skill:
-   - Modify `filter_node` to handle null results
-3. **Re-run Eval** (tests only)
-
-### Fix in building-agents:
-
-```python
-# Update the filter_node to handle null
-add_node(
-    node_id="filter_node",
-    name="Filter Node",
-    description="Filter and rank videos",
-    node_type="function",
-    input_keys=["search_results"],
-    output_keys=["filtered_videos"],
-    system_prompt="""
-    Filter videos by relevance.
-    IMPORTANT: Handle case where search_results is None or empty.
-    Return empty list if no results.
-    """
-)
-```
-
-### Re-export and re-test:
-
-```python
-# Re-export the fixed agent
-export_graph(path="exports/youtube-research")
-
-# Re-run tests
-result = run_tests(
-    goal_id="youtube-research",
-    agent_path="exports/youtube-research",
-    test_types='["all"]'
-)
-```
-
-**Updated Results:**
-
-```json
-{
-    "goal_id": "youtube-research",
-    "overall_passed": true,
-    "summary": {
-        "total": 6,
-        "passed": 6,
-        "failed": 0,
-        "pass_rate": "100.0%"
-    }
-}
-```
-
-## Summary
-
-1. **Got guidelines** for constraint tests during Goal stage
-2. **Wrote** constraint tests using Write tool
-3. **Got guidelines** for success criteria tests during Eval stage
-4. **Wrote** success criteria tests using Write tool
-5. **Ran** tests in parallel
-6. **Debugged** the one failure
-7. **Categorized** as IMPLEMENTATION_ERROR
-8. **Fixed** the agent (not the goal)
-9. **Re-ran** Eval only (didn't restart full flow)
-10. **Passed** all tests
-
-The agent is now validated and ready for production use.

.cursor/skills/agent-workflow

@@ -1 +0,0 @@
-../../.claude/skills/agent-workflow

.cursor/skills/building-agents-construction

@@ -1 +0,0 @@
-../../.claude/skills/building-agents-construction

.cursor/skills/building-agents-core

@@ -1 +0,0 @@
-../../.claude/skills/building-agents-core

.cursor/skills/building-agents-patterns

@@ -1 +0,0 @@
-../../.claude/skills/building-agents-patterns

.cursor/skills/hive

@@ -0,0 +1 @@
+../../.claude/skills/hive

.cursor/skills/hive-concepts

@@ -0,0 +1 @@
+../../.claude/skills/hive-concepts

.cursor/skills/hive-create

@@ -0,0 +1 @@
+../../.claude/skills/hive-create

.cursor/skills/hive-credentials

@@ -0,0 +1 @@
+../../.claude/skills/hive-credentials

.cursor/skills/hive-patterns

@@ -0,0 +1 @@
+../../.claude/skills/hive-patterns

.cursor/skills/hive-test

@@ -0,0 +1 @@
+../../.claude/skills/hive-test

.cursor/skills/testing-agent

@@ -1 +0,0 @@
-../../.claude/skills/testing-agent

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,9 +1,10 @@
 ---
 name: Bug Report
 about: Report a bug to help us improve
-title: '[Bug]: '
-labels: bug
+title: "[Bug]: "
+labels: bug, enhancement
 assignees: ''
+
 ---
 
 ## Describe the Bug

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,9 +1,10 @@
 ---
 name: Feature Request
 about: Suggest a new feature or enhancement
-title: '[Feature]: '
+title: "[Feature]: "
 labels: enhancement
 assignees: ''
+
 ---
 
 ## Problem Statement

.github/ISSUE_TEMPLATE/integration-request.md

@@ -0,0 +1,71 @@
+---
+name: Integration Request
+about: Suggest a new integration
+title: "[Integration]:"
+labels: ''
+assignees: ''
+
+---
+
+## Service                                                                                      
+                                                                                                 
+ Name and brief description of the service and what it enables agents to do.                     
+                                                                                                 
+ **Description:** [e.g., "API key for Slack Bot" — short one-liner for the credential spec]      
+                                                                                                 
+ ## Credential Identity                                                                          
+                                                                                                 
+ - **credential_id:** [e.g., `slack`]                                                            
+ - **env_var:** [e.g., `SLACK_BOT_TOKEN`]                                                        
+ - **credential_key:** [e.g., `access_token`, `api_key`, `bot_token`]                            
+                                                                                                 
+ ## Tools                                                                                        
+                                                                                                 
+ Tool function names that require this credential:                                               
+                                                                                                 
+ - [e.g., `slack_send_message`]                                                                  
+ - [e.g., `slack_list_channels`]                                                                 
+                                                                                                 
+ ## Auth Methods                                                                                 
+                                                                                                 
+ - **Direct API key supported:** Yes / No                                                        
+ - **Aden OAuth supported:** Yes / No                                                            
+                                                                                                 
+ If Aden OAuth is supported, describe the OAuth scopes/permissions required.                     
+                                                                                                 
+ ## How to Get the Credential                                                                    
+                                                                                                 
+ Link where users obtain the key/token:                                                          
+                                                                                                 
+ [e.g., https://api.slack.com/apps]                                                              
+                                                                                                 
+ Step-by-step instructions:                                                                      
+                                                                                                 
+ 1. Go to ...                                                                                    
+ 2. Create a ...                                                                                 
+ 3. Select scopes/permissions: ...                                                               
+ 4. Copy the key/token                                                                           
+                                                                                                 
+ ## Health Check                                                                                 
+                                                                                                 
+ A lightweight API call to validate the credential (no writes, no charges).                      
+                                                                                                 
+ - **Endpoint:** [e.g., `https://slack.com/api/auth.test`]                                       
+ - **Method:** [e.g., `GET` or `POST`]                                                           
+ - **Auth header:** [e.g., `Authorization: Bearer {token}` or `X-Api-Key: {key}`]                
+ - **Parameters (if any):** [e.g., `?limit=1`]                                                   
+ - **200 means:** [e.g., key is valid]                                                           
+ - **401 means:** [e.g., invalid or expired]                                                     
+ - **429 means:** [e.g., rate limited but key is valid]                                          
+                                                                                                 
+ ## Credential Group                                                                             
+                                                                                                 
+ Does this require multiple credentials configured together? (e.g., Google Custom Search needs   
+ both an API key and a CSE ID)                                                                   
+                                                                                                 
+ - [ ] No, single credential                                                                     
+ - [ ] Yes — list the other credential IDs in the group:                                         
+                                                                                                 
+ ## Additional Context                                                                           
+                                                                                                 
+ Links to API docs, rate limits, free tier availability, or anything else relevant.

.github/workflows/ci.yml

@@ -21,23 +21,22 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: '3.11'
-          cache: 'pip'
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v4
 
       - name: Install dependencies
-        run: |
-          cd core
-          pip install -e .
-          pip install -r requirements-dev.txt
+        run: uv sync --project core --group dev
 
       - name: Ruff lint
         run: |
-          ruff check core/
-          ruff check tools/
+          uv run --project core ruff check core/
+          uv run --project core ruff check tools/
 
       - name: Ruff format
         run: |
-          ruff format --check core/
-          ruff format --check tools/
+          uv run --project core ruff format --check core/
+          uv run --project core ruff format --check tools/
 
   test:
     name: Test Python Framework
@@ -52,18 +51,15 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: '3.11'
-          cache: 'pip'
 
-      - name: Install dependencies
+      - name: Install uv
+        uses: astral-sh/setup-uv@v4
+
+      - name: Install dependencies and run tests
         run: |
           cd core
-          pip install -e .
-          pip install -r requirements-dev.txt
-
-      - name: Run tests
-        run: |
-          cd core
-          pytest tests/ -v
+          uv sync
+          uv run pytest tests/ -v
 
   test-tools:
     name: Test Tools
@@ -83,8 +79,7 @@ jobs:
         run: |
           cd tools
           uv sync --extra dev
-          uv pip install --python .venv/bin/python -e ../core
-          uv run --extra dev pytest tests/ -v
+          uv run pytest tests/ -v
 
   validate:
     name: Validate Agent Exports
@@ -97,13 +92,14 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: '3.11'
-          cache: 'pip'
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v4
 
       - name: Install dependencies
         run: |
           cd core
-          pip install -e .
-          pip install -r requirements-dev.txt
+          uv sync
 
       - name: Validate exported agents
         run: |
@@ -126,7 +122,7 @@ jobs:
           for agent_dir in "${agent_dirs[@]}"; do
             if [ -f "$agent_dir/agent.json" ]; then
               echo "Validating $agent_dir"
-              python -c "import json; json.load(open('$agent_dir/agent.json'))"
+              uv run python -c "import json; json.load(open('$agent_dir/agent.json'))"
               validated=$((validated + 1))
             fi
           done

.github/workflows/release.yml

@@ -21,18 +21,19 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: '3.11'
-          cache: 'pip'
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v4
 
       - name: Install dependencies
         run: |
           cd core
-          pip install -e .
-          pip install -r requirements-dev.txt
+          uv sync
 
       - name: Run tests
         run: |
           cd core
-          pytest tests/ -v
+          uv run pytest tests/ -v
 
       - name: Generate changelog
         id: changelog

.gitignore

@@ -54,7 +54,6 @@ __pycache__/
 *.egg-info/
 .eggs/
 *.egg
-uv.lock
 
 # Generated runtime data
 core/data/
@@ -69,4 +68,10 @@ exports/*
 
 .agent-builder-sessions/*
 
-.venv
+.claude/settings.local.json
+
+.venv
+
+docs/github-issues/*
+core/tests/*dumps/*
+screenshots/*

.mcp.json

@@ -1,20 +1,14 @@
 {
   "mcpServers": {
     "agent-builder": {
-      "command": ".venv/bin/python",
-      "args": ["-m", "framework.mcp.agent_builder_server"],
-      "cwd": "core",
-      "env": {
-        "PYTHONPATH": "../tools/src"
-      }
+      "command": "uv",
+      "args": ["run", "-m", "framework.mcp.agent_builder_server"],
+      "cwd": "core"
     },
     "tools": {
-      "command": ".venv/bin/python",
-      "args": ["mcp_server.py", "--stdio"],
-      "cwd": "tools",
-      "env": {
-        "PYTHONPATH": "src:../core"
-      }
+      "command": "uv",
+      "args": ["run", "mcp_server.py", "--stdio"],
+      "cwd": "tools"
     }
   }
 }

.opencode/agents/hive.md

@@ -0,0 +1,20 @@
+---
+name: hive
+description: Hive Agent Builder & Manager
+mode: primary
+tools:
+  agent-builder: true
+  tools: true
+---
+
+# Hive Agent
+You are the Hive Agent Builder. Your goal is to help the user construct, configure, and deploy AI agents using the Hive framework.
+
+## Capabilities
+1. **Scaffold Agents:** Create new agent directories/configs.
+2. **Manage Tools:** Add/remove tools via MCP.
+3. **Debug:** Analyze agent workflows.
+
+## Context
+- You are an expert in the Hive framework architecture.
+- Always use the `agent-builder` MCP server for filesystem operations.

.opencode/mcp.json

@@ -0,0 +1,30 @@
+{
+  "mcpServers": {
+    "agent-builder": {
+      "command": "uv",
+      "args": [
+        "run",
+        "python",
+        "-m",
+        "framework.mcp.agent_builder_server"
+      ],
+      "cwd": "core",
+      "env": {
+        "PYTHONPATH": "../tools/src"
+      }
+    },
+    "tools": {
+      "command": "uv",
+      "args": [
+        "run",
+        "python",
+        "mcp_server.py",
+        "--stdio"
+      ],
+      "cwd": "tools",
+      "env": {
+        "PYTHONPATH": "src"
+      }
+    }
+  }
+}

.opencode/skills/hive

@@ -0,0 +1 @@
+../../.claude/skills/hive

.opencode/skills/hive-concepts

@@ -0,0 +1 @@
+../../.claude/skills/hive-concepts

.opencode/skills/hive-create

@@ -0,0 +1 @@
+../../.claude/skills/hive-create

.opencode/skills/hive-credentials

@@ -0,0 +1 @@
+../../.claude/skills/hive-credentials

.opencode/skills/hive-debugger

@@ -0,0 +1 @@
+../../.claude/skills/hive-debugger

.opencode/skills/hive-patterns

@@ -0,0 +1 @@
+../../.claude/skills/hive-patterns

.opencode/skills/hive-test

@@ -0,0 +1 @@
+../../.claude/skills/hive-test

.opencode/skills/triage-issue

@@ -0,0 +1 @@
+../../.claude/skills/triage-issue

.pre-commit-config.yaml

@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.8.6
+    rev: v0.15.0
     hooks:
       - id: ruff
         name: ruff lint (core)

CHANGELOG.md

@@ -1,41 +0,0 @@
-# Changelog
-
-All notable changes to this project will be documented in this file.
-
-The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
-and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
-
-## [Unreleased]
-
-### Added
-- Initial project structure
-- React frontend (honeycomb) with Vite and TypeScript
-- Node.js backend (hive) with Express and TypeScript
-- Docker Compose configuration for local development
-- Configuration system via `config.yaml`
-- GitHub Actions CI/CD workflows
-- Comprehensive documentation
-
-### Changed
-- N/A
-
-### Deprecated
-- N/A
-
-### Removed
-- N/A
-
-
-### Fixed
-- tools: Fixed web_scrape tool attempting to parse non-HTML content (PDF, JSON) as HTML (#487)
-
-### Security
-- N/A
-
-## [0.1.0] - 2025-01-13
-
-### Added
-- Initial release
-
-[Unreleased]: https://github.com/adenhq/hive/compare/v0.1.0...HEAD
-[0.1.0]: https://github.com/adenhq/hive/releases/tag/v0.1.0

CONTRIBUTING.md

@@ -1,10 +1,10 @@
 # Contributing to Aden Agent Framework
 
-Thank you for your interest in contributing to the Aden Agent Framework! This document provides guidelines and information for contributors. We’re especially looking for help building tools, integrations([check #2805](https://github.com/adenhq/hive/issues/2805)), and example agents for the framework. If you’re interested in extending its functionality, this is the perfect place to start. 
+Thank you for your interest in contributing to the Aden Agent Framework! This document provides guidelines and information for contributors. We’re especially looking for help building tools, integrations ([check #2805](https://github.com/adenhq/hive/issues/2805)), and example agents for the framework. If you’re interested in extending its functionality, this is the perfect place to start. 
 
 ## Code of Conduct
 
-By participating in this project, you agree to abide by our [Code of Conduct](CODE_OF_CONDUCT.md).
+By participating in this project, you agree to abide by our [Code of Conduct](docs/CODE_OF_CONDUCT.md).
 
 ## Issue Assignment Policy
 
@@ -35,15 +35,22 @@ You may submit PRs without prior assignment for:
 
 1. Fork the repository
 2. Clone your fork: `git clone https://github.com/YOUR_USERNAME/hive.git`
-3. Create a feature branch: `git checkout -b feature/your-feature-name`
-4. Make your changes
-5. Run checks and tests:
+3. Add the upstream repository: `git remote add upstream https://github.com/adenhq/hive.git`
+4. Sync with upstream to ensure you're starting from the latest code:
+   ```bash
+   git fetch upstream
+   git checkout main
+   git merge upstream/main
+   ```
+5. Create a feature branch: `git checkout -b feature/your-feature-name`
+6. Make your changes
+7. Run checks and tests:
    ```bash
    make check    # Lint and format checks (ruff check + ruff format --check on core/ and tools/)
    make test     # Core tests (cd core && pytest tests/ -v)
    ```
-6. Commit your changes following our commit conventions
-7. Push to your fork and submit a Pull Request
+8. Commit your changes following our commit conventions
+9. Push to your fork and submit a Pull Request
 
 ## Development Setup
 
@@ -125,7 +132,7 @@ feat(component): add new feature description
 > **Note:** When testing agents in `exports/`, always set PYTHONPATH:
 >
 > ```bash
-> PYTHONPATH=core:exports python -m agent_name test
+> PYTHONPATH=exports uv run python -m agent_name test
 > ```
 
 ```bash
@@ -138,8 +145,11 @@ make test
 # Or run tests directly
 cd core && pytest tests/ -v
 
+# Run tools package tests (when contributing to tools/)
+cd tools && uv run pytest tests/ -v
+
 # Run tests for a specific agent
-PYTHONPATH=core:exports python -m agent_name test
+PYTHONPATH=exports uv run python -m agent_name test
 ```
 
 > **CI also validates** that all exported agent JSON files (`exports/*/agent.json`) are well-formed JSON. Ensure your agent exports are valid before submitting.
@@ -152,4 +162,4 @@ By submitting a Pull Request, you agree that your contributions will be licensed
 
 Feel free to open an issue for questions or join our [Discord community](https://discord.com/invite/MXE49hrKDk).
 
-Thank you for contributing!
+Thank you for contributing!

Makefile

@@ -4,9 +4,11 @@ help: ## Show this help
 	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | \
 		awk 'BEGIN {FS = ":.*?## "}; {printf "  \033[36m%-15s\033[0m %s\n", $$1, $$2}'
 
-lint: ## Run ruff linter (with auto-fix)
+lint: ## Run ruff linter and formatter (with auto-fix)
 	cd core && ruff check --fix .
 	cd tools && ruff check --fix .
+	cd core && ruff format .
+	cd tools && ruff format .
 
 format: ## Run ruff formatter
 	cd core && ruff format .
@@ -19,8 +21,8 @@ check: ## Run all checks without modifying files (CI-safe)
 	cd tools && ruff format --check .
 
 test: ## Run all tests
-	cd core && python -m pytest tests/ -v
+	cd core && uv run python -m pytest tests/ -v
 
 install-hooks: ## Install pre-commit hooks
-	pip install pre-commit
+	uv pip install pre-commit
 	pre-commit install

PR.md

@@ -1,51 +0,0 @@
-## Summary
-- **Added HubSpot integration** — new HubSpot MCP tool with search, get, create, and update operations for contacts, companies, and deals. Includes OAuth2 provider for HubSpot credentials and credential store adapter for the tools layer.
-- **Replaced web_scrape tool with Playwright + stealth** — swapped httpx/BeautifulSoup for a headless Chromium browser using `playwright` (async API) and `playwright-stealth`, enabling JS-rendered page scraping and bot detection evasion
-- **Added empty response retry logic** — LLM provider now detects empty responses (e.g. Gemini returning 200 with no content on rate limit) and retries with exponential backoff, preventing hallucinated output from the cleanup LLM
-- **Added context-aware input compaction** — LLM nodes now estimate input token count before calling the model and progressively truncate the largest values if they exceed the context window budget
-- **Increased rate limit retries to 10** with verbose `[retry]` and `[compaction]` logging that includes model name, finish reason, and attempt count
-- **Updated setup scripts** — `scripts/setup-python.sh` now installs Playwright Chromium browser automatically for web scraping support
-- **Interactive quickstart onboarding** — `quickstart.sh` rewritten as bee-themed interactive wizard that detects existing API keys (including Claude Code subscription), lets user pick ONE default LLM provider, and saves configuration to `~/.hive/configuration.json`
-- **Fixed lint errors** across `hubspot_tool.py` (line length) and `agent_builder_server.py` (unused variable)
-
-## Changed files
-
-### HubSpot Integration
-- `tools/src/aden_tools/tools/hubspot_tool/` — New MCP tool: contacts, companies, and deals CRUD
-- `tools/src/aden_tools/tools/__init__.py` — Registered HubSpot tools
-- `tools/src/aden_tools/credentials/integrations.py` — HubSpot credential integration
-- `tools/src/aden_tools/credentials/__init__.py` — Updated credential exports
-- `core/framework/credentials/oauth2/hubspot_provider.py` — HubSpot OAuth2 provider
-- `core/framework/credentials/oauth2/__init__.py` — Registered HubSpot OAuth2 provider
-- `core/framework/runner/runner.py` — Updated runner for credential support
-
-### Web Scrape Rewrite
-- `tools/src/aden_tools/tools/web_scrape_tool/web_scrape_tool.py` — Playwright async rewrite
-- `tools/src/aden_tools/tools/web_scrape_tool/README.md` — Updated docs
-- `tools/pyproject.toml` — Added `playwright`, `playwright-stealth` deps
-- `tools/Dockerfile` — Added `playwright install chromium --with-deps`
-- `scripts/setup-python.sh` — Added Playwright Chromium browser install step
-
-### LLM Reliability
-- `core/framework/llm/litellm.py` — Empty response retry + max retries 10 + verbose logging
-- `core/framework/graph/node.py` — Input compaction via `_compact_inputs()`, `_estimate_tokens()`, `_get_context_limit()`
-
-### Quickstart & Setup
-- `quickstart.sh` — Interactive bee-themed onboarding wizard with single provider selection
-- `~/.hive/configuration.json` — New user config file for default LLM provider/model
-
-### Fixes
-- `core/framework/mcp/agent_builder_server.py` — Removed unused variable
-- `tools/src/aden_tools/tools/hubspot_tool/hubspot_tool.py` — Fixed E501 line length violations
-
-## Test plan
-- [ ] Run `make lint` — passes clean
-- [ ] Run `./quickstart.sh` and verify interactive flow works, config saved to `~/.hive/configuration.json`
-- [ ] Run `./scripts/setup-python.sh` and verify Playwright Chromium installs
-- [ ] Run `pytest tests/tools/test_web_scrape_tool.py -v`
-- [ ] Run agent against a JS-heavy site and verify `web_scrape` returns rendered content
-- [ ] Set `HUBSPOT_ACCESS_TOKEN` and verify HubSpot tool CRUD operations work
-- [ ] Trigger rate limit and verify `[retry]` logs appear with correct attempt counts
-- [ ] Run agent with large inputs and verify `[compaction]` logs show truncation
-
-🤖 Generated with [Claude Code](https://claude.com/claude-code)

README.md

@@ -1,5 +1,5 @@
 <p align="center">
-  <img width="100%" alt="Hive Banner" src="https://storage.googleapis.com/aden-prod-assets/website/aden-title-card.png" />
+  <img width="100%" alt="Hive Banner" src="https://github.com/user-attachments/assets/a027429b-5d3c-4d34-88e4-0feaeaabbab3" />
 </p>
 
 <p align="center">
@@ -13,17 +13,20 @@
   <a href="docs/i18n/ko.md">한국어</a>
 </p>
 
-[![Apache 2.0 License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://github.com/adenhq/hive/blob/main/LICENSE)
-[![Y Combinator](https://img.shields.io/badge/Y%20Combinator-Aden-orange)](https://www.ycombinator.com/companies/aden)
-[![Docker Pulls](https://img.shields.io/docker/pulls/adenhq/hive?logo=Docker&labelColor=%23528bff)](https://hub.docker.com/u/adenhq)
-[![Discord](https://img.shields.io/discord/1172610340073242735?logo=discord&labelColor=%235462eb&logoColor=%23f5f5f5&color=%235462eb)](https://discord.com/invite/MXE49hrKDk)
-[![Twitter Follow](https://img.shields.io/twitter/follow/teamaden?logo=X&color=%23f5f5f5)](https://x.com/aden_hq)
-[![LinkedIn](https://custom-icon-badges.demolab.com/badge/LinkedIn-0A66C2?logo=linkedin-white&logoColor=fff)](https://www.linkedin.com/company/teamaden/)
+<p align="center">
+  <a href="https://github.com/adenhq/hive/blob/main/LICENSE"><img src="https://img.shields.io/badge/License-Apache%202.0-blue.svg" alt="Apache 2.0 License" /></a>
+  <a href="https://www.ycombinator.com/companies/aden"><img src="https://img.shields.io/badge/Y%20Combinator-Aden-orange" alt="Y Combinator" /></a>
+  <a href="https://discord.com/invite/MXE49hrKDk"><img src="https://img.shields.io/discord/1172610340073242735?logo=discord&labelColor=%235462eb&logoColor=%23f5f5f5&color=%235462eb" alt="Discord" /></a>
+  <a href="https://x.com/aden_hq"><img src="https://img.shields.io/twitter/follow/teamaden?logo=X&color=%23f5f5f5" alt="Twitter Follow" /></a>
+  <a href="https://www.linkedin.com/company/teamaden/"><img src="https://custom-icon-badges.demolab.com/badge/LinkedIn-0A66C2?logo=linkedin-white&logoColor=fff" alt="LinkedIn" /></a>
+  <img src="https://img.shields.io/badge/MCP-102_Tools-00ADD8?style=flat-square" alt="MCP" />
+</p>
+
 
 <p align="center">
   <img src="https://img.shields.io/badge/AI_Agents-Self--Improving-brightgreen?style=flat-square" alt="AI Agents" />
   <img src="https://img.shields.io/badge/Multi--Agent-Systems-blue?style=flat-square" alt="Multi-Agent" />
-  <img src="https://img.shields.io/badge/Goal--Driven-Development-purple?style=flat-square" alt="Goal-Driven" />
+  <img src="https://img.shields.io/badge/Headless-Development-purple?style=flat-square" alt="Headless" />
   <img src="https://img.shields.io/badge/Human--in--the--Loop-orange?style=flat-square" alt="HITL" />
   <img src="https://img.shields.io/badge/Production--Ready-red?style=flat-square" alt="Production" />
 </p>
@@ -31,15 +34,16 @@
   <img src="https://img.shields.io/badge/OpenAI-supported-412991?style=flat-square&logo=openai" alt="OpenAI" />
   <img src="https://img.shields.io/badge/Anthropic-supported-d4a574?style=flat-square" alt="Anthropic" />
   <img src="https://img.shields.io/badge/Google_Gemini-supported-4285F4?style=flat-square&logo=google" alt="Gemini" />
-  <img src="https://img.shields.io/badge/MCP-19_Tools-00ADD8?style=flat-square" alt="MCP" />
 </p>
 
 ## Overview
 
-Build reliable, self-improving AI agents without hardcoding workflows. Define your goal through conversation with a coding agent, and the framework generates a node graph with dynamically created connection code. When things break, the framework captures failure data, evolves the agent through the coding agent, and redeploys. Built-in human-in-the-loop nodes, credential management, and real-time monitoring give you control without sacrificing adaptability.
+Build autonomous, reliable, self-improving AI agents without hardcoding workflows. Define your goal through conversation with a coding agent, and the framework generates a node graph with dynamically created connection code. When things break, the framework captures failure data, evolves the agent through the coding agent, and redeploys. Built-in human-in-the-loop nodes, credential management, and real-time monitoring give you control without sacrificing adaptability.
 
 Visit [adenhq.com](https://adenhq.com) for complete documentation, examples, and guides.
 
+https://github.com/user-attachments/assets/846c0cc7-ffd6-47fa-b4b7-495494857a55
+
 ## Who Is Hive For?
 
 Hive is designed for developers and teams who want to build **production-grade AI agents** without manually wiring complex workflows.
@@ -59,41 +63,29 @@ Hive may not be the best fit if you’re only experimenting with simple agent ch
 Use Hive when you need:
 
 - Long-running, autonomous agents
-- Multi-agent coordination
+- Strong guardrails, process, and controls
 - Continuous improvement based on failures
-- Strong monitoring, safety, and budget controls
+- Multi-agent coordination
 - A framework that evolves with your goals
 
-
-## What is Aden
-
-<p align="center">
-  <img width="100%" alt="Aden Architecture" src="docs/assets/aden-architecture-diagram.jpg" />
-</p>
-
-Aden is a platform for building, deploying, operating, and adapting AI agents:
-
-- **Build** - A Coding Agent generates specialized Worker Agents (Sales, Marketing, Ops) from natural language goals
-- **Deploy** - Headless deployment with CI/CD integration and full API lifecycle management
-- **Operate** - Real-time monitoring, observability, and runtime guardrails keep agents reliable
-- **Adapt** - Continuous evaluation, supervision, and adaptation ensure agents improve over time
-- **Infra** - Shared memory, LLM integrations, tools, and skills power every agent
-
 ## Quick Links
 
 - **[Documentation](https://docs.adenhq.com/)** - Complete guides and API reference
 - **[Self-Hosting Guide](https://docs.adenhq.com/getting-started/quickstart)** - Deploy Hive on your infrastructure
 - **[Changelog](https://github.com/adenhq/hive/releases)** - Latest updates and releases
-<!-- - **[Roadmap](https://adenhq.com/roadmap)** - Upcoming features and plans -->
+- **[Roadmap](docs/roadmap.md)** - Upcoming features and plans
 - **[Report Issues](https://github.com/adenhq/hive/issues)** - Bug reports and feature requests
+- **[Contributing](CONTRIBUTING.md)** - How to contribute and submit PRs
 
 ## Quick Start
 
 ### Prerequisites
 
-- [Python 3.11+](https://www.python.org/downloads/) for agent development
+- Python 3.11+ for agent development
 - Claude Code or Cursor for utilizing agent skills
 
+> **Note for Windows Users:** It is strongly recommended to use **WSL (Windows Subsystem for Linux)** or **Git Bash** to run this framework. Some core automation scripts may not execute correctly in standard Command Prompt or PowerShell.
+
 ### Installation
 
 ```bash
@@ -106,45 +98,63 @@ cd hive
 ```
 
 This sets up:
+
 - **framework** - Core agent runtime and graph executor (in `core/.venv`)
 - **aden_tools** - MCP tools for agent capabilities (in `tools/.venv`)
-- All required Python dependencies
+- **credential store** - Encrypted API key storage (`~/.hive/credentials`)
+- **LLM provider** - Interactive default model configuration
+- All required Python dependencies with `uv`
 
 ### Build Your First Agent
 
 ```bash
 # Build an agent using Claude Code
-claude> /building-agents-construction
+claude> /hive
 
 # Test your agent
-claude> /testing-agent
+claude> /hive-debugger
 
-# Run your agent
-PYTHONPATH=core:exports python -m your_agent_name run --input '{...}'
+# (at separate terminal) Launch the interactive dashboard
+hive tui
+
+# Or run directly
+hive run exports/your_agent_name --input '{"key": "value"}'
 ```
+##  Coding Agent Support
+### Opencode 
+Hive includes native support for [Opencode](https://github.com/opencode-ai/opencode).
 
-**[📖 Complete Setup Guide](ENVIRONMENT_SETUP.md)** - Detailed instructions for agent development
+1. **Setup:** Run the quickstart script 
+2. **Launch:** Open Opencode in the project root.
+3. **Activate:** Type `/hive` in the chat to switch to the Hive Agent.
+4. **Verify:** Ask the agent *"List your tools"* to confirm the connection.
 
-### Cursor IDE Support
+The agent has access to all Hive skills and can scaffold agents, add tools, and debug workflows directly from the chat.
 
-Skills are also available in Cursor. To enable:
-
-1. Open Command Palette (`Cmd+Shift+P` / `Ctrl+Shift+P`)
-2. Run `MCP: Enable` to enable MCP servers
-3. Restart Cursor to load the MCP servers from `.cursor/mcp.json`
-4. Type `/` in Agent chat and search for skills (e.g., `/building-agents-construction`)
+**[📖 Complete Setup Guide](docs/environment-setup.md)** - Detailed instructions for agent development
 
 ## Features
 
-- **Goal-Driven Development** - Define objectives in natural language; the coding agent generates the agent graph and connection code to achieve them
-- **Adaptiveness** - Framework captures failures, calibrates according to the objectives, and evolves the agent graph
-- **Dynamic Node Connections** - No predefined edges; connection code is generated by any capable LLM based on your goals
+- **[Goal-Driven Development](docs/key_concepts/goals_outcome.md)** - Define objectives in natural language; the coding agent generates the agent graph and connection code to achieve them
+- **[Adaptiveness](docs/key_concepts/evolution.md)** - Framework captures failures, calibrates according to the objectives, and evolves the agent graph
+- **[Dynamic Node Connections](docs/key_concepts/graph.md)** - No predefined edges; connection code is generated by any capable LLM based on your goals
 - **SDK-Wrapped Nodes** - Every node gets shared memory, local RLM memory, monitoring, tools, and LLM access out of the box
-- **Human-in-the-Loop** - Intervention nodes that pause execution for human input with configurable timeouts and escalation
+- **[Human-in-the-Loop](docs/key_concepts/graph.md#human-in-the-loop)** - Intervention nodes that pause execution for human input with configurable timeouts and escalation
 - **Real-time Observability** - WebSocket streaming for live monitoring of agent execution, decisions, and node-to-node communication
+- **Interactive TUI Dashboard** - Terminal-based dashboard with live graph view, event log, and chat interface for agent interaction
 - **Cost & Budget Control** - Set spending limits, throttles, and automatic model degradation policies
 - **Production-Ready** - Self-hostable, built for scale and reliability
 
+## Integration
+
+<a href="https://github.com/adenhq/hive/tree/main/tools/src/aden_tools/tools"><img width="100%" alt="Integration" src="https://github.com/user-attachments/assets/a1573f93-cf02-4bb8-b3d5-b305b05b1e51" /></a>
+
+Hive is built to be model-agnostic and system-agnostic.
+
+- **LLM flexibility** - Hive Framework is designed to support various types of LLMs, including hosted and local models through LiteLLM-compatible providers.
+- **Business system connectivity** - Hive Framework is designed to connect to all kinds of business systems as tools, such as CRM, support, messaging, data, file, and internal APIs via MCP.
+
+
 ## Why Aden
 
 Hive focuses on generating agents that run real business processes rather than generic agents. Instead of requiring you to manually design workflows, define agent interactions, and handle failures reactively, Hive flips the paradigm: **you describe outcomes, and the system builds itself**—delivering an outcome-driven, adaptive experience with an easy-to-use set of tools and integrations.
@@ -181,67 +191,60 @@ flowchart LR
     style V6 fill:#fff,stroke:#ed8c00,stroke-width:1px,color:#cc5d00
 ```
 
-### The Aden Advantage
+### The Hive Advantage
 
-| Traditional Frameworks     | Aden                                   |
+| Traditional Frameworks     | Hive                                   |
 | -------------------------- | -------------------------------------- |
 | Hardcode agent workflows   | Describe goals in natural language     |
 | Manual graph definition    | Auto-generated agent graphs            |
-| Reactive error handling    | Outcome-evaluation and adaptiveness               |
+| Reactive error handling    | Outcome-evaluation and adaptiveness    |
 | Static tool configurations | Dynamic SDK-wrapped nodes              |
 | Separate monitoring setup  | Built-in real-time observability       |
 | DIY budget management      | Integrated cost controls & degradation |
 
 ### How It Works
 
-1. **Define Your Goal** → Describe what you want to achieve in plain English
-2. **Coding Agent Generates** → Creates the agent graph, connection code, and test cases
-3. **Workers Execute** → SDK-wrapped nodes run with full observability and tool access
+1. **[Define Your Goal](docs/key_concepts/goals_outcome.md)** → Describe what you want to achieve in plain English
+2. **Coding Agent Generates** → Creates the [agent graph](docs/key_concepts/graph.md), connection code, and test cases
+3. **[Workers Execute](docs/key_concepts/worker_agent.md)** → SDK-wrapped nodes run with full observability and tool access
 4. **Control Plane Monitors** → Real-time metrics, budget enforcement, policy management
-5. **Adaptiveness** → On failure, the system evolves the graph and redeploys automatically
+5. **[Adaptiveness](docs/key_concepts/evolution.md)** → On failure, the system evolves the graph and redeploys automatically
 
-## Run pre-built Agents (Coming Soon)
+## Run Agents
 
-### Run a sample agent
-Aden Hive provides a list of featured agents that you can use and build on top of.
-
-### Run an agent shared by others
-Put the agent in `exports/` and run `PYTHONPATH=core:exports python -m your_agent_name run --input '{...}'`
-
-
-For building and running goal-driven agents with the framework:
+The `hive` CLI is the primary interface for running agents.
 
 ```bash
-# One-time setup
-./quickstart.sh
+# Browse and run agents interactively (Recommended)
+hive tui
 
-# This sets up:
-# - framework package (core runtime)
-# - aden_tools package (MCP tools)
-# - All Python dependencies
+# Run a specific agent directly
+hive run exports/my_agent --input '{"task": "Your input here"}'
 
-# Build new agents using Claude Code skills
-claude> /building-agents-construction
+# Run a specific agent with the TUI dashboard
+hive run exports/my_agent --tui
 
-# Test agents
-claude> /testing-agent
-
-# Run agents
-PYTHONPATH=core:exports python -m agent_name run --input '{...}'
+# Interactive REPL
+hive shell
 ```
 
-See [ENVIRONMENT_SETUP.md](ENVIRONMENT_SETUP.md) for complete setup instructions.
+The TUI scans both `exports/` and `examples/templates/` for available agents.
+
+> **Using Python directly (alternative):** You can also run agents with `PYTHONPATH=exports uv run python -m agent_name run --input '{...}'`
+
+See [environment-setup.md](docs/environment-setup.md) for complete setup instructions.
 
 ## Documentation
 
-- **[Developer Guide](DEVELOPER.md)** - Comprehensive guide for developers
+- **[Developer Guide](docs/developer-guide.md)** - Comprehensive guide for developers
 - [Getting Started](docs/getting-started.md) - Quick setup instructions
+- [TUI Guide](docs/tui-selection-guide.md) - Interactive dashboard usage
 - [Configuration Guide](docs/configuration.md) - All configuration options
 - [Architecture Overview](docs/architecture/README.md) - System design and structure
 
 ## Roadmap
 
-Aden Hive Agent Framework aims to help developers build outcome-oriented, self-adaptive agents. See [ROADMAP.md](ROADMAP.md) for details.
+Aden Hive Agent Framework aims to help developers build outcome-oriented, self-adaptive agents. See [roadmap.md](docs/roadmap.md) for details.
 
 ```mermaid
 flowchart TD
@@ -331,11 +334,12 @@ end
 
 classDef done fill:#9e9e9e,color:#fff,stroke:#757575
 ```
+
 ## Contributing
 
 We welcome contributions from the community! We’re especially looking for help building tools, integrations, and example agents for the framework ([check #2805](https://github.com/adenhq/hive/issues/2805)). If you’re interested in extending its functionality, this is the perfect place to start. Please see [CONTRIBUTING.md](CONTRIBUTING.md) for guidelines.
 
-**Important:** Please get assigned to an issue before submitting a PR. Comment on an issue to claim it, and a maintainer will assign you. Issues with reproducible steps and proposals are prioritized. This helps prevent duplicate work. 
+**Important:** Please get assigned to an issue before submitting a PR. Comment on an issue to claim it, and a maintainer will assign you. Issues with reproducible steps and proposals are prioritized. This helps prevent duplicate work.
 
 1. Find or create an issue and get assigned
 2. Fork the repository
@@ -368,10 +372,6 @@ This project is licensed under the Apache License 2.0 - see the [LICENSE](LICENS
 
 ## Frequently Asked Questions (FAQ)
 
-**Q: Does Hive depend on LangChain or other agent frameworks?**
-
-No. Hive is built from the ground up with no dependencies on LangChain, CrewAI, or other agent frameworks. The framework is designed to be lean and flexible, generating agent graphs dynamically rather than relying on predefined components.
-
 **Q: What LLM providers does Hive support?**
 
 Hive supports 100+ LLM providers through LiteLLM integration, including OpenAI (GPT-4, GPT-4o), Anthropic (Claude models), Google Gemini, DeepSeek, Mistral, Groq, and many more. Simply set the appropriate API key environment variable and specify the model name.
@@ -382,37 +382,25 @@ Yes! Hive supports local models through LiteLLM. Simply use the model name forma
 
 **Q: What makes Hive different from other agent frameworks?**
 
-Hive generates your entire agent system from natural language goals using a coding agent—you don't hardcode workflows or manually define graphs. When agents fail, the framework automatically captures failure data, evolves the agent graph, and redeploys. This self-improving loop is unique to Aden.
+Hive generates your entire agent system from natural language goals using a coding agent—you don't hardcode workflows or manually define graphs. When agents fail, the framework automatically captures failure data, [evolves the agent graph](docs/key_concepts/evolution.md), and redeploys. This self-improving loop is unique to Aden.
 
 **Q: Is Hive open-source?**
 
 Yes, Hive is fully open-source under the Apache License 2.0. We actively encourage community contributions and collaboration.
 
-**Q: Does Hive collect data from users?**
-
-Hive collects telemetry data for monitoring and observability purposes, including token usage, latency metrics, and cost tracking. Content capture (prompts and responses) is configurable and stored with team-scoped data isolation. All data stays within your infrastructure when self-hosted.
-
-**Q: What deployment options does Hive support?**
-
-Hive supports self-hosted deployments via Python packages. See the [Environment Setup Guide](ENVIRONMENT_SETUP.md) for installation instructions. Cloud deployment options and Kubernetes-ready configurations are on the roadmap.
-
 **Q: Can Hive handle complex, production-scale use cases?**
 
 Yes. Hive is explicitly designed for production environments with features like automatic failure recovery, real-time observability, cost controls, and horizontal scaling support. The framework handles both simple automations and complex multi-agent workflows.
 
 **Q: Does Hive support human-in-the-loop workflows?**
 
-Yes, Hive fully supports human-in-the-loop workflows through intervention nodes that pause execution for human input. These include configurable timeouts and escalation policies, allowing seamless collaboration between human experts and AI agents.
-
-**Q: What monitoring and debugging tools does Hive provide?**
-
-Hive includes comprehensive observability features: real-time WebSocket streaming for live agent execution monitoring, TimescaleDB-powered analytics for cost and performance metrics, health check endpoints for Kubernetes integration, and MCP tools for agent execution, including file operations, web search, data processing, and more.
+Yes, Hive fully supports [human-in-the-loop](docs/key_concepts/graph.md#human-in-the-loop) workflows through intervention nodes that pause execution for human input. These include configurable timeouts and escalation policies, allowing seamless collaboration between human experts and AI agents.
 
 **Q: What programming languages does Hive support?**
 
 The Hive framework is built in Python. A JavaScript/TypeScript SDK is on the roadmap.
 
-**Q: Can Aden agents interact with external tools and APIs?**
+**Q: Can Hive agents interact with external tools and APIs?**
 
 Yes. Aden's SDK-wrapped nodes provide built-in tool access, and the framework supports flexible tool ecosystems. Agents can integrate with external APIs, databases, and services through the node architecture.
 
@@ -422,7 +410,7 @@ Hive provides granular budget controls including spending limits, throttles, and
 
 **Q: Where can I find examples and documentation?**
 
-Visit [docs.adenhq.com](https://docs.adenhq.com/) for complete guides, API reference, and getting started tutorials. The repository also includes documentation in the `docs/` folder and a comprehensive [DEVELOPER.md](DEVELOPER.md) guide.
+Visit [docs.adenhq.com](https://docs.adenhq.com/) for complete guides, API reference, and getting started tutorials. The repository also includes documentation in the `docs/` folder and a comprehensive [developer guide](docs/developer-guide.md).
 
 **Q: How can I contribute to Aden?**
 
@@ -436,10 +424,6 @@ Aden's adaptation loop begins working from the first execution. When an agent fa
 
 Hive focuses on generating agents that run real business processes, rather than generic agents. This vision emphasizes outcome-driven design, adaptability, and an easy-to-use set of tools and integrations.
 
-**Q: Does Aden offer enterprise support?**
-
-For enterprise inquiries, contact the Aden team through [adenhq.com](https://adenhq.com) or join our [Discord community](https://discord.com/invite/MXE49hrKDk) for support and discussions.
-
 ---
 
 <p align="center">

core/.gitignore

@@ -1,4 +1,5 @@
 exports/
 docs/
+.agent-builder-sessions/
 .pytest_cache/
 **/__pycache__/

core/README.md

@@ -14,7 +14,7 @@ Framework provides a runtime framework that captures **decisions**, not just act
 ## Installation
 
 ```bash
-pip install -e .
+uv pip install -e .
 ```
 
 ## MCP Server Setup
@@ -45,13 +45,13 @@ If you prefer manual setup:
 
 ```bash
 # Install framework
-pip install -e .
+uv pip install -e .
 
 # Install MCP dependencies
-pip install mcp fastmcp
+uv pip install mcp fastmcp
 
 # Test the server
-python -m framework.mcp.agent_builder_server
+uv run python -m framework.mcp.agent_builder_server
 ```
 
 ### Using with MCP Clients
@@ -86,13 +86,13 @@ Run an LLM-powered calculator:
 
 ```bash
 # Single calculation
-python -m framework calculate "2 + 3 * 4"
+uv run python -m framework calculate "2 + 3 * 4"
 
 # Interactive mode
-python -m framework interactive
+uv run python -m framework interactive
 
 # Analyze runs with Builder
-python -m framework analyze calculator
+uv run python -m framework analyze calculator
 ```
 
 ### Using the Runtime
@@ -136,16 +136,16 @@ Tests are generated using MCP tools (`generate_constraint_tests`, `generate_succ
 
 ```bash
 # Run tests against an agent
-python -m framework test-run <agent_path> --goal <goal_id> --parallel 4
+uv run python -m framework test-run <agent_path> --goal <goal_id> --parallel 4
 
 # Debug failed tests
-python -m framework test-debug <agent_path> <test_name>
+uv run python -m framework test-debug <agent_path> <test_name>
 
 # List tests for a goal
-python -m framework test-list <goal_id>
+uv run python -m framework test-list <goal_id>
 ```
 
-For detailed testing workflows, see the [testing-agent skill](../.claude/skills/testing-agent/SKILL.md).
+For detailed testing workflows, see the [hive-test skill](../.claude/skills/hive-test/SKILL.md).
 
 ### Analyzing Agent Behavior with Builder
 

core/demos/event_loop_wss_demo.py

@@ -0,0 +1,740 @@
+#!/usr/bin/env python3
+"""
+EventLoopNode WebSocket Demo
+
+Real LLM, real FileConversationStore, real EventBus.
+Streams EventLoopNode execution to a browser via WebSocket.
+
+Usage:
+    cd /home/timothy/oss/hive/core
+    python demos/event_loop_wss_demo.py
+
+    Then open http://localhost:8765 in your browser.
+"""
+
+import asyncio
+import json
+import logging
+import sys
+import tempfile
+from http import HTTPStatus
+from pathlib import Path
+
+import httpx
+import websockets
+from bs4 import BeautifulSoup
+from websockets.http11 import Request, Response
+
+# Add core, tools, and hive root to path
+_CORE_DIR = Path(__file__).resolve().parent.parent
+_HIVE_DIR = _CORE_DIR.parent
+sys.path.insert(0, str(_CORE_DIR))  # framework.*
+sys.path.insert(0, str(_HIVE_DIR / "tools" / "src"))  # aden_tools.*
+sys.path.insert(0, str(_HIVE_DIR))  # core.framework.* (for aden_tools imports)
+
+import os  # noqa: E402
+
+from aden_tools.credentials import CREDENTIAL_SPECS, CredentialStoreAdapter  # noqa: E402
+from core.framework.credentials import CredentialStore  # noqa: E402
+
+from framework.credentials.storage import (  # noqa: E402
+    CompositeStorage,
+    EncryptedFileStorage,
+    EnvVarStorage,
+)
+from framework.graph.event_loop_node import EventLoopNode, LoopConfig  # noqa: E402
+from framework.graph.node import NodeContext, NodeSpec, SharedMemory  # noqa: E402
+from framework.llm.litellm import LiteLLMProvider  # noqa: E402
+from framework.llm.provider import Tool  # noqa: E402
+from framework.runner.tool_registry import ToolRegistry  # noqa: E402
+from framework.runtime.core import Runtime  # noqa: E402
+from framework.runtime.event_bus import EventBus, EventType  # noqa: E402
+from framework.storage.conversation_store import FileConversationStore  # noqa: E402
+
+logging.basicConfig(level=logging.INFO, format="%(asctime)s %(name)s %(message)s")
+logger = logging.getLogger("demo")
+
+# -------------------------------------------------------------------------
+# Persistent state (shared across WebSocket connections)
+# -------------------------------------------------------------------------
+
+STORE_DIR = Path(tempfile.mkdtemp(prefix="hive_demo_"))
+STORE = FileConversationStore(STORE_DIR / "conversation")
+RUNTIME = Runtime(STORE_DIR / "runtime")
+LLM = LiteLLMProvider(model="claude-sonnet-4-5-20250929")
+
+# -------------------------------------------------------------------------
+# Tool Registry — real tools via ToolRegistry (same pattern as GraphExecutor)
+# -------------------------------------------------------------------------
+
+TOOL_REGISTRY = ToolRegistry()
+
+# Credential store: Aden sync (OAuth2 tokens) + encrypted files + env var fallback
+_env_mapping = {name: spec.env_var for name, spec in CREDENTIAL_SPECS.items()}
+_local_storage = CompositeStorage(
+    primary=EncryptedFileStorage(),
+    fallbacks=[EnvVarStorage(env_mapping=_env_mapping)],
+)
+
+if os.environ.get("ADEN_API_KEY"):
+    try:
+        from framework.credentials.aden import (  # noqa: E402
+            AdenCachedStorage,
+            AdenClientConfig,
+            AdenCredentialClient,
+            AdenSyncProvider,
+        )
+
+        _client = AdenCredentialClient(AdenClientConfig(base_url="https://api.adenhq.com"))
+        _provider = AdenSyncProvider(client=_client)
+        _storage = AdenCachedStorage(
+            local_storage=_local_storage,
+            aden_provider=_provider,
+        )
+        _cred_store = CredentialStore(storage=_storage, providers=[_provider], auto_refresh=True)
+        _synced = _provider.sync_all(_cred_store)
+        logger.info("Synced %d credentials from Aden", _synced)
+    except Exception as e:
+        logger.warning("Aden sync unavailable: %s", e)
+        _cred_store = CredentialStore(storage=_local_storage)
+else:
+    logger.info("ADEN_API_KEY not set, using local credential storage")
+    _cred_store = CredentialStore(storage=_local_storage)
+
+CREDENTIALS = CredentialStoreAdapter(_cred_store)
+
+# Debug: log which credentials resolved
+for _name in ["brave_search", "hubspot", "anthropic"]:
+    _val = CREDENTIALS.get(_name)
+    if _val:
+        logger.debug("credential %s: OK (len=%d)", _name, len(_val))
+    else:
+        logger.debug("credential %s: not found", _name)
+
+# --- web_search (Brave Search API) ---
+
+TOOL_REGISTRY.register(
+    name="web_search",
+    tool=Tool(
+        name="web_search",
+        description=(
+            "Search the web for current information. "
+            "Returns titles, URLs, and snippets from search results."
+        ),
+        parameters={
+            "type": "object",
+            "properties": {
+                "query": {
+                    "type": "string",
+                    "description": "The search query (1-500 characters)",
+                },
+                "num_results": {
+                    "type": "integer",
+                    "description": "Number of results to return (1-20, default 10)",
+                },
+            },
+            "required": ["query"],
+        },
+    ),
+    executor=lambda inputs: _exec_web_search(inputs),
+)
+
+
+def _exec_web_search(inputs: dict) -> dict:
+    api_key = CREDENTIALS.get("brave_search")
+    if not api_key:
+        return {"error": "brave_search credential not configured"}
+    query = inputs.get("query", "")
+    num_results = min(inputs.get("num_results", 10), 20)
+    resp = httpx.get(
+        "https://api.search.brave.com/res/v1/web/search",
+        params={"q": query, "count": num_results},
+        headers={"X-Subscription-Token": api_key, "Accept": "application/json"},
+        timeout=30.0,
+    )
+    if resp.status_code != 200:
+        return {"error": f"Brave API HTTP {resp.status_code}"}
+    data = resp.json()
+    results = [
+        {
+            "title": item.get("title", ""),
+            "url": item.get("url", ""),
+            "snippet": item.get("description", ""),
+        }
+        for item in data.get("web", {}).get("results", [])[:num_results]
+    ]
+    return {"query": query, "results": results, "total": len(results)}
+
+
+# --- web_scrape (httpx + BeautifulSoup, no playwright for sync compat) ---
+
+TOOL_REGISTRY.register(
+    name="web_scrape",
+    tool=Tool(
+        name="web_scrape",
+        description=(
+            "Scrape and extract text content from a webpage URL. "
+            "Returns the page title and main text content."
+        ),
+        parameters={
+            "type": "object",
+            "properties": {
+                "url": {
+                    "type": "string",
+                    "description": "URL of the webpage to scrape",
+                },
+                "max_length": {
+                    "type": "integer",
+                    "description": "Maximum text length (default 50000)",
+                },
+            },
+            "required": ["url"],
+        },
+    ),
+    executor=lambda inputs: _exec_web_scrape(inputs),
+)
+
+_SCRAPE_HEADERS = {
+    "User-Agent": (
+        "Mozilla/5.0 (Windows NT 10.0; Win64; x64) "
+        "AppleWebKit/537.36 (KHTML, like Gecko) "
+        "Chrome/131.0.0.0 Safari/537.36"
+    ),
+    "Accept": "text/html,application/xhtml+xml",
+}
+
+
+def _exec_web_scrape(inputs: dict) -> dict:
+    url = inputs.get("url", "")
+    max_length = max(1000, min(inputs.get("max_length", 50000), 500000))
+    if not url.startswith(("http://", "https://")):
+        url = "https://" + url
+    try:
+        resp = httpx.get(url, timeout=30.0, follow_redirects=True, headers=_SCRAPE_HEADERS)
+        if resp.status_code != 200:
+            return {"error": f"HTTP {resp.status_code}"}
+        soup = BeautifulSoup(resp.text, "html.parser")
+        for tag in soup(["script", "style", "nav", "footer", "header", "aside", "noscript"]):
+            tag.decompose()
+        title = soup.title.get_text(strip=True) if soup.title else ""
+        main = (
+            soup.find("article")
+            or soup.find("main")
+            or soup.find(attrs={"role": "main"})
+            or soup.find("body")
+        )
+        text = main.get_text(separator=" ", strip=True) if main else ""
+        text = " ".join(text.split())
+        if len(text) > max_length:
+            text = text[:max_length] + "..."
+        return {"url": url, "title": title, "content": text, "length": len(text)}
+    except httpx.TimeoutException:
+        return {"error": "Request timed out"}
+    except Exception as e:
+        return {"error": f"Scrape failed: {e}"}
+
+
+# --- HubSpot CRM tools (optional, requires HUBSPOT_ACCESS_TOKEN) ---
+
+_HUBSPOT_API = "https://api.hubapi.com"
+
+
+def _hubspot_headers() -> dict | None:
+    token = CREDENTIALS.get("hubspot")
+    if token:
+        logger.debug("HubSpot token: %s...%s (len=%d)", token[:8], token[-4:], len(token))
+    else:
+        logger.debug("HubSpot token: not found")
+    if not token:
+        return None
+    return {
+        "Authorization": f"Bearer {token}",
+        "Content-Type": "application/json",
+        "Accept": "application/json",
+    }
+
+
+def _exec_hubspot_search(inputs: dict) -> dict:
+    headers = _hubspot_headers()
+    if not headers:
+        return {"error": "HUBSPOT_ACCESS_TOKEN not set"}
+    object_type = inputs.get("object_type", "contacts")
+    query = inputs.get("query", "")
+    limit = min(inputs.get("limit", 10), 100)
+    body: dict = {"limit": limit}
+    if query:
+        body["query"] = query
+    try:
+        resp = httpx.post(
+            f"{_HUBSPOT_API}/crm/v3/objects/{object_type}/search",
+            headers=headers,
+            json=body,
+            timeout=30.0,
+        )
+        if resp.status_code != 200:
+            return {"error": f"HubSpot API HTTP {resp.status_code}: {resp.text[:200]}"}
+        return resp.json()
+    except httpx.TimeoutException:
+        return {"error": "Request timed out"}
+    except Exception as e:
+        return {"error": f"HubSpot error: {e}"}
+
+
+TOOL_REGISTRY.register(
+    name="hubspot_search",
+    tool=Tool(
+        name="hubspot_search",
+        description=(
+            "Search HubSpot CRM objects (contacts, companies, or deals). "
+            "Returns matching records with their properties."
+        ),
+        parameters={
+            "type": "object",
+            "properties": {
+                "object_type": {
+                    "type": "string",
+                    "description": "CRM object type: 'contacts', 'companies', or 'deals'",
+                },
+                "query": {
+                    "type": "string",
+                    "description": "Search query (name, email, domain, etc.)",
+                },
+                "limit": {
+                    "type": "integer",
+                    "description": "Max results (1-100, default 10)",
+                },
+            },
+            "required": ["object_type"],
+        },
+    ),
+    executor=lambda inputs: _exec_hubspot_search(inputs),
+)
+
+logger.info(
+    "ToolRegistry loaded: %s",
+    ", ".join(TOOL_REGISTRY.get_registered_names()),
+)
+
+
+# -------------------------------------------------------------------------
+# HTML page (embedded)
+# -------------------------------------------------------------------------
+
+HTML_PAGE = (  # noqa: E501
+    """<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<title>EventLoopNode Live Demo</title>
+<style>
+  * { box-sizing: border-box; margin: 0; padding: 0; }
+  body {
+    font-family: 'SF Mono', 'Fira Code', monospace;
+    background: #0d1117; color: #c9d1d9;
+    height: 100vh; display: flex; flex-direction: column;
+  }
+  header {
+    background: #161b22; padding: 12px 20px;
+    border-bottom: 1px solid #30363d;
+    display: flex; align-items: center; gap: 16px;
+  }
+  header h1 { font-size: 16px; color: #58a6ff; font-weight: 600; }
+  .status {
+    font-size: 12px; padding: 3px 10px; border-radius: 12px;
+    background: #21262d; color: #8b949e;
+  }
+  .status.running { background: #1a4b2e; color: #3fb950; }
+  .status.done { background: #1a3a5c; color: #58a6ff; }
+  .status.error { background: #4b1a1a; color: #f85149; }
+  .chat { flex: 1; overflow-y: auto; padding: 16px; }
+  .msg {
+    margin: 8px 0; padding: 10px 14px; border-radius: 8px;
+    line-height: 1.6; white-space: pre-wrap; word-wrap: break-word;
+  }
+  .msg.user { background: #1a3a5c; color: #58a6ff; }
+  .msg.assistant { background: #161b22; color: #c9d1d9; }
+  .msg.event {
+    background: transparent; color: #8b949e; font-size: 11px;
+    padding: 4px 14px; border-left: 3px solid #30363d;
+  }
+  .msg.event.loop { border-left-color: #58a6ff; }
+  .msg.event.tool { border-left-color: #d29922; }
+  .msg.event.stall { border-left-color: #f85149; }
+  .input-bar {
+    padding: 12px 16px; background: #161b22;
+    border-top: 1px solid #30363d; display: flex; gap: 8px;
+  }
+  .input-bar input {
+    flex: 1; background: #0d1117; border: 1px solid #30363d;
+    color: #c9d1d9; padding: 8px 12px; border-radius: 6px;
+    font-family: inherit; font-size: 14px; outline: none;
+  }
+  .input-bar input:focus { border-color: #58a6ff; }
+  .input-bar button {
+    background: #238636; color: #fff; border: none;
+    padding: 8px 20px; border-radius: 6px; cursor: pointer;
+    font-family: inherit; font-weight: 600;
+  }
+  .input-bar button:hover { background: #2ea043; }
+  .input-bar button:disabled {
+    background: #21262d; color: #484f58; cursor: not-allowed;
+  }
+  .input-bar button.clear { background: #da3633; }
+  .input-bar button.clear:hover { background: #f85149; }
+</style>
+</head>
+<body>
+  <header>
+    <h1>EventLoopNode Live</h1>
+    <span id="status" class="status">Idle</span>
+    <span id="iter" class="status" style="display:none">Step 0</span>
+  </header>
+  <div id="chat" class="chat"></div>
+  <div class="input-bar">
+    <input id="input" type="text"
+           placeholder="Ask anything..." autofocus />
+    <button id="go" onclick="run()">Send</button>
+    <button class="clear"
+            onclick="clearConversation()">Clear</button>
+  </div>
+
+<script>
+let ws = null;
+let currentAssistantEl = null;
+let iterCount = 0;
+const chat = document.getElementById('chat');
+const status = document.getElementById('status');
+const iterEl = document.getElementById('iter');
+const goBtn = document.getElementById('go');
+const inputEl = document.getElementById('input');
+
+inputEl.addEventListener('keydown', e => {
+  if (e.key === 'Enter') run();
+});
+
+function setStatus(text, cls) {
+  status.textContent = text;
+  status.className = 'status ' + cls;
+}
+
+function addMsg(text, cls) {
+  const el = document.createElement('div');
+  el.className = 'msg ' + cls;
+  el.textContent = text;
+  chat.appendChild(el);
+  chat.scrollTop = chat.scrollHeight;
+  return el;
+}
+
+function connect() {
+  ws = new WebSocket('ws://' + location.host + '/ws');
+  ws.onopen = () => {
+    setStatus('Ready', 'done');
+    goBtn.disabled = false;
+  };
+  ws.onmessage = handleEvent;
+  ws.onerror = () => { setStatus('Error', 'error'); };
+  ws.onclose = () => {
+    setStatus('Reconnecting...', '');
+    goBtn.disabled = true;
+    setTimeout(connect, 2000);
+  };
+}
+
+function handleEvent(msg) {
+  const evt = JSON.parse(msg.data);
+
+  if (evt.type === 'llm_text_delta') {
+    if (currentAssistantEl) {
+      currentAssistantEl.textContent += evt.content;
+      chat.scrollTop = chat.scrollHeight;
+    }
+  }
+  else if (evt.type === 'ready') {
+    setStatus('Ready', 'done');
+    if (currentAssistantEl && !currentAssistantEl.textContent)
+      currentAssistantEl.remove();
+    goBtn.disabled = false;
+  }
+  else if (evt.type === 'node_loop_iteration') {
+    iterCount = evt.iteration || (iterCount + 1);
+    iterEl.textContent = 'Step ' + iterCount;
+    iterEl.style.display = '';
+  }
+  else if (evt.type === 'tool_call_started') {
+    var info = evt.tool_name + '('
+      + JSON.stringify(evt.tool_input).slice(0, 120) + ')';
+    addMsg('TOOL  ' + info, 'event tool');
+  }
+  else if (evt.type === 'tool_call_completed') {
+    var preview = (evt.result || '').slice(0, 200);
+    var cls = evt.is_error ? 'stall' : 'tool';
+    addMsg('RESULT  ' + evt.tool_name + ': ' + preview,
+           'event ' + cls);
+    currentAssistantEl = addMsg('', 'assistant');
+  }
+  else if (evt.type === 'result') {
+    setStatus('Session ended', evt.success ? 'done' : 'error');
+    if (evt.error) addMsg('ERROR  ' + evt.error, 'event stall');
+    if (currentAssistantEl && !currentAssistantEl.textContent)
+      currentAssistantEl.remove();
+    goBtn.disabled = false;
+  }
+  else if (evt.type === 'node_stalled') {
+    addMsg('STALLED  ' + evt.reason, 'event stall');
+  }
+  else if (evt.type === 'cleared') {
+    chat.innerHTML = '';
+    iterCount = 0;
+    iterEl.textContent = 'Step 0';
+    iterEl.style.display = 'none';
+    setStatus('Ready', 'done');
+    goBtn.disabled = false;
+  }
+}
+
+function run() {
+  const text = inputEl.value.trim();
+  if (!text || !ws || ws.readyState !== 1) return;
+  addMsg(text, 'user');
+  currentAssistantEl = addMsg('', 'assistant');
+  inputEl.value = '';
+  setStatus('Running', 'running');
+  goBtn.disabled = true;
+  ws.send(JSON.stringify({ topic: text }));
+}
+
+function clearConversation() {
+  if (ws && ws.readyState === 1) {
+    ws.send(JSON.stringify({ command: 'clear' }));
+  }
+}
+
+connect();
+</script>
+</body>
+</html>"""
+)
+
+
+# -------------------------------------------------------------------------
+# WebSocket handler
+# -------------------------------------------------------------------------
+
+
+async def handle_ws(websocket):
+    """Persistent WebSocket: long-lived EventLoopNode with client_facing blocking."""
+    global STORE
+
+    # -- Event forwarding (WebSocket ← EventBus) ----------------------------
+    bus = EventBus()
+
+    async def forward_event(event):
+        try:
+            payload = {"type": event.type.value, **event.data}
+            if event.node_id:
+                payload["node_id"] = event.node_id
+            await websocket.send(json.dumps(payload))
+        except Exception:
+            pass
+
+    bus.subscribe(
+        event_types=[
+            EventType.NODE_LOOP_STARTED,
+            EventType.NODE_LOOP_ITERATION,
+            EventType.NODE_LOOP_COMPLETED,
+            EventType.LLM_TEXT_DELTA,
+            EventType.TOOL_CALL_STARTED,
+            EventType.TOOL_CALL_COMPLETED,
+            EventType.NODE_STALLED,
+        ],
+        handler=forward_event,
+    )
+
+    # -- Per-connection state -----------------------------------------------
+    node = None
+    loop_task = None
+
+    tools = list(TOOL_REGISTRY.get_tools().values())
+    tool_executor = TOOL_REGISTRY.get_executor()
+
+    node_spec = NodeSpec(
+        id="assistant",
+        name="Chat Assistant",
+        description="A conversational assistant that remembers context across messages",
+        node_type="event_loop",
+        client_facing=True,
+        system_prompt=(
+            "You are a helpful assistant with access to tools. "
+            "You can search the web, scrape webpages, and query HubSpot CRM. "
+            "Use tools when the user asks for current information or external data. "
+            "You have full conversation history, so you can reference previous messages."
+        ),
+    )
+
+    # -- Ready callback: subscribe to CLIENT_INPUT_REQUESTED on the bus ---
+    async def on_input_requested(event):
+        try:
+            await websocket.send(json.dumps({"type": "ready"}))
+        except Exception:
+            pass
+
+    bus.subscribe(
+        event_types=[EventType.CLIENT_INPUT_REQUESTED],
+        handler=on_input_requested,
+    )
+
+    async def start_loop(first_message: str):
+        """Create an EventLoopNode and run it as a background task."""
+        nonlocal node, loop_task
+
+        memory = SharedMemory()
+        ctx = NodeContext(
+            runtime=RUNTIME,
+            node_id="assistant",
+            node_spec=node_spec,
+            memory=memory,
+            input_data={},
+            llm=LLM,
+            available_tools=tools,
+        )
+        node = EventLoopNode(
+            event_bus=bus,
+            config=LoopConfig(max_iterations=10_000, max_history_tokens=32_000),
+            conversation_store=STORE,
+            tool_executor=tool_executor,
+        )
+        await node.inject_event(first_message)
+
+        async def _run():
+            try:
+                result = await node.execute(ctx)
+                try:
+                    await websocket.send(
+                        json.dumps(
+                            {
+                                "type": "result",
+                                "success": result.success,
+                                "output": result.output,
+                                "error": result.error,
+                                "tokens": result.tokens_used,
+                            }
+                        )
+                    )
+                except Exception:
+                    pass
+                logger.info(f"Loop ended: success={result.success}, tokens={result.tokens_used}")
+            except websockets.exceptions.ConnectionClosed:
+                logger.info("Loop stopped: WebSocket closed")
+            except Exception as e:
+                logger.exception("Loop error")
+                try:
+                    await websocket.send(
+                        json.dumps(
+                            {
+                                "type": "result",
+                                "success": False,
+                                "error": str(e),
+                                "output": {},
+                            }
+                        )
+                    )
+                except Exception:
+                    pass
+
+        loop_task = asyncio.create_task(_run())
+
+    async def stop_loop():
+        """Signal the node and wait for the loop task to finish."""
+        nonlocal node, loop_task
+        if loop_task and not loop_task.done():
+            if node:
+                node.signal_shutdown()
+            try:
+                await asyncio.wait_for(loop_task, timeout=5.0)
+            except (TimeoutError, asyncio.CancelledError):
+                loop_task.cancel()
+        node = None
+        loop_task = None
+
+    # -- Message loop (runs for the lifetime of this WebSocket) -------------
+    try:
+        async for raw in websocket:
+            try:
+                msg = json.loads(raw)
+            except Exception:
+                continue
+
+            # Clear command
+            if msg.get("command") == "clear":
+                import shutil
+
+                await stop_loop()
+                await STORE.close()
+                conv_dir = STORE_DIR / "conversation"
+                if conv_dir.exists():
+                    shutil.rmtree(conv_dir)
+                STORE = FileConversationStore(conv_dir)
+                await websocket.send(json.dumps({"type": "cleared"}))
+                logger.info("Conversation cleared")
+                continue
+
+            topic = msg.get("topic", "")
+            if not topic:
+                continue
+
+            if node is None:
+                # First message — spin up the loop
+                logger.info(f"Starting persistent loop: {topic}")
+                await start_loop(topic)
+            else:
+                # Subsequent message — inject into the running loop
+                logger.info(f"Injecting message: {topic}")
+                await node.inject_event(topic)
+
+    except websockets.exceptions.ConnectionClosed:
+        pass
+    finally:
+        await stop_loop()
+        logger.info("WebSocket closed, loop stopped")
+
+
+# -------------------------------------------------------------------------
+# HTTP handler for serving the HTML page
+# -------------------------------------------------------------------------
+
+
+async def process_request(connection, request: Request):
+    """Serve HTML on GET /, upgrade to WebSocket on /ws."""
+    if request.path == "/ws":
+        return None  # let websockets handle the upgrade
+    # Serve the HTML page for any other path
+    return Response(
+        HTTPStatus.OK,
+        "OK",
+        websockets.Headers({"Content-Type": "text/html; charset=utf-8"}),
+        HTML_PAGE.encode(),
+    )
+
+
+# -------------------------------------------------------------------------
+# Main
+# -------------------------------------------------------------------------
+
+
+async def main():
+    port = 8765
+    async with websockets.serve(
+        handle_ws,
+        "0.0.0.0",
+        port,
+        process_request=process_request,
+    ):
+        logger.info(f"Demo running at http://localhost:{port}")
+        logger.info("Open in your browser and enter a topic to research.")
+        await asyncio.Future()  # run forever
+
+
+if __name__ == "__main__":
+    asyncio.run(main())

core/demos/handoff_demo.py

@@ -0,0 +1,930 @@
+#!/usr/bin/env python3
+"""
+Two-Node ContextHandoff Demo
+
+Demonstrates ContextHandoff between two EventLoopNode instances:
+  Node A (Researcher) → ContextHandoff → Node B (Analyst)
+
+Real LLM, real FileConversationStore, real EventBus.
+Streams both nodes to a browser via WebSocket.
+
+Usage:
+    cd /home/timothy/oss/hive/core
+    python demos/handoff_demo.py
+
+    Then open http://localhost:8766 in your browser.
+"""
+
+import asyncio
+import json
+import logging
+import sys
+import tempfile
+from http import HTTPStatus
+from pathlib import Path
+
+import httpx
+import websockets
+from bs4 import BeautifulSoup
+from websockets.http11 import Request, Response
+
+# Add core, tools, and hive root to path
+_CORE_DIR = Path(__file__).resolve().parent.parent
+_HIVE_DIR = _CORE_DIR.parent
+sys.path.insert(0, str(_CORE_DIR))  # framework.*
+sys.path.insert(0, str(_HIVE_DIR / "tools" / "src"))  # aden_tools.*
+sys.path.insert(0, str(_HIVE_DIR))  # core.framework.* (for aden_tools imports)
+
+from aden_tools.credentials import CREDENTIAL_SPECS, CredentialStoreAdapter  # noqa: E402
+from core.framework.credentials import CredentialStore  # noqa: E402
+
+from framework.credentials.storage import (  # noqa: E402
+    CompositeStorage,
+    EncryptedFileStorage,
+    EnvVarStorage,
+)
+from framework.graph.context_handoff import ContextHandoff  # noqa: E402
+from framework.graph.conversation import NodeConversation  # noqa: E402
+from framework.graph.event_loop_node import EventLoopNode, LoopConfig  # noqa: E402
+from framework.graph.node import NodeContext, NodeSpec, SharedMemory  # noqa: E402
+from framework.llm.litellm import LiteLLMProvider  # noqa: E402
+from framework.llm.provider import Tool  # noqa: E402
+from framework.runner.tool_registry import ToolRegistry  # noqa: E402
+from framework.runtime.core import Runtime  # noqa: E402
+from framework.runtime.event_bus import EventBus, EventType  # noqa: E402
+from framework.storage.conversation_store import FileConversationStore  # noqa: E402
+
+logging.basicConfig(level=logging.INFO, format="%(asctime)s %(name)s %(message)s")
+logger = logging.getLogger("handoff_demo")
+
+# -------------------------------------------------------------------------
+# Persistent state
+# -------------------------------------------------------------------------
+
+STORE_DIR = Path(tempfile.mkdtemp(prefix="hive_handoff_"))
+RUNTIME = Runtime(STORE_DIR / "runtime")
+LLM = LiteLLMProvider(model="claude-sonnet-4-5-20250929")
+
+# -------------------------------------------------------------------------
+# Credentials
+# -------------------------------------------------------------------------
+
+# Composite credential store: encrypted files (primary) + env vars (fallback)
+_env_mapping = {name: spec.env_var for name, spec in CREDENTIAL_SPECS.items()}
+_composite = CompositeStorage(
+    primary=EncryptedFileStorage(),
+    fallbacks=[EnvVarStorage(env_mapping=_env_mapping)],
+)
+CREDENTIALS = CredentialStoreAdapter(CredentialStore(storage=_composite))
+
+for _name in ["brave_search", "hubspot"]:
+    _val = CREDENTIALS.get(_name)
+    if _val:
+        logger.debug("credential %s: OK (len=%d)", _name, len(_val))
+    else:
+        logger.debug("credential %s: not found", _name)
+
+# -------------------------------------------------------------------------
+# Tool Registry — web_search + web_scrape for Node A (Researcher)
+# -------------------------------------------------------------------------
+
+TOOL_REGISTRY = ToolRegistry()
+
+
+def _exec_web_search(inputs: dict) -> dict:
+    api_key = CREDENTIALS.get("brave_search")
+    if not api_key:
+        return {"error": "brave_search credential not configured"}
+    query = inputs.get("query", "")
+    num_results = min(inputs.get("num_results", 10), 20)
+    resp = httpx.get(
+        "https://api.search.brave.com/res/v1/web/search",
+        params={"q": query, "count": num_results},
+        headers={
+            "X-Subscription-Token": api_key,
+            "Accept": "application/json",
+        },
+        timeout=30.0,
+    )
+    if resp.status_code != 200:
+        return {"error": f"Brave API HTTP {resp.status_code}"}
+    data = resp.json()
+    results = [
+        {
+            "title": item.get("title", ""),
+            "url": item.get("url", ""),
+            "snippet": item.get("description", ""),
+        }
+        for item in data.get("web", {}).get("results", [])[:num_results]
+    ]
+    return {"query": query, "results": results, "total": len(results)}
+
+
+TOOL_REGISTRY.register(
+    name="web_search",
+    tool=Tool(
+        name="web_search",
+        description=(
+            "Search the web for current information. "
+            "Returns titles, URLs, and snippets from search results."
+        ),
+        parameters={
+            "type": "object",
+            "properties": {
+                "query": {
+                    "type": "string",
+                    "description": "The search query (1-500 characters)",
+                },
+                "num_results": {
+                    "type": "integer",
+                    "description": "Number of results (1-20, default 10)",
+                },
+            },
+            "required": ["query"],
+        },
+    ),
+    executor=lambda inputs: _exec_web_search(inputs),
+)
+
+_SCRAPE_HEADERS = {
+    "User-Agent": (
+        "Mozilla/5.0 (Windows NT 10.0; Win64; x64) "
+        "AppleWebKit/537.36 (KHTML, like Gecko) "
+        "Chrome/131.0.0.0 Safari/537.36"
+    ),
+    "Accept": "text/html,application/xhtml+xml",
+}
+
+
+def _exec_web_scrape(inputs: dict) -> dict:
+    url = inputs.get("url", "")
+    max_length = max(1000, min(inputs.get("max_length", 50000), 500000))
+    if not url.startswith(("http://", "https://")):
+        url = "https://" + url
+    try:
+        resp = httpx.get(
+            url,
+            timeout=30.0,
+            follow_redirects=True,
+            headers=_SCRAPE_HEADERS,
+        )
+        if resp.status_code != 200:
+            return {"error": f"HTTP {resp.status_code}"}
+        soup = BeautifulSoup(resp.text, "html.parser")
+        for tag in soup(["script", "style", "nav", "footer", "header", "aside", "noscript"]):
+            tag.decompose()
+        title = soup.title.get_text(strip=True) if soup.title else ""
+        main = (
+            soup.find("article")
+            or soup.find("main")
+            or soup.find(attrs={"role": "main"})
+            or soup.find("body")
+        )
+        text = main.get_text(separator=" ", strip=True) if main else ""
+        text = " ".join(text.split())
+        if len(text) > max_length:
+            text = text[:max_length] + "..."
+        return {
+            "url": url,
+            "title": title,
+            "content": text,
+            "length": len(text),
+        }
+    except httpx.TimeoutException:
+        return {"error": "Request timed out"}
+    except Exception as e:
+        return {"error": f"Scrape failed: {e}"}
+
+
+TOOL_REGISTRY.register(
+    name="web_scrape",
+    tool=Tool(
+        name="web_scrape",
+        description=(
+            "Scrape and extract text content from a webpage URL. "
+            "Returns the page title and main text content."
+        ),
+        parameters={
+            "type": "object",
+            "properties": {
+                "url": {
+                    "type": "string",
+                    "description": "URL of the webpage to scrape",
+                },
+                "max_length": {
+                    "type": "integer",
+                    "description": "Maximum text length (default 50000)",
+                },
+            },
+            "required": ["url"],
+        },
+    ),
+    executor=lambda inputs: _exec_web_scrape(inputs),
+)
+
+logger.info(
+    "ToolRegistry loaded: %s",
+    ", ".join(TOOL_REGISTRY.get_registered_names()),
+)
+
+# -------------------------------------------------------------------------
+# Node Specs
+# -------------------------------------------------------------------------
+
+RESEARCHER_SPEC = NodeSpec(
+    id="researcher",
+    name="Researcher",
+    description="Researches a topic using web search and scraping tools",
+    node_type="event_loop",
+    input_keys=["topic"],
+    output_keys=["research_summary"],
+    system_prompt=(
+        "You are a thorough research assistant. Your job is to research "
+        "the given topic using the web_search and web_scrape tools.\n\n"
+        "1. Search for relevant information on the topic\n"
+        "2. Scrape 1-2 of the most promising URLs for details\n"
+        "3. Synthesize your findings into a comprehensive summary\n"
+        "4. Use set_output with key='research_summary' to save your "
+        "findings\n\n"
+        "Be thorough but efficient. Aim for 2-4 search/scrape calls, "
+        "then summarize and set_output."
+    ),
+)
+
+ANALYST_SPEC = NodeSpec(
+    id="analyst",
+    name="Analyst",
+    description="Analyzes research findings and provides insights",
+    node_type="event_loop",
+    input_keys=["context"],
+    output_keys=["analysis"],
+    system_prompt=(
+        "You are a strategic analyst. You receive research findings from "
+        "a previous researcher and must:\n\n"
+        "1. Identify key themes and patterns\n"
+        "2. Assess the reliability and significance of the findings\n"
+        "3. Provide actionable insights and recommendations\n"
+        "4. Use set_output with key='analysis' to save your analysis\n\n"
+        "Be concise but insightful. Focus on what matters most."
+    ),
+)
+
+
+# -------------------------------------------------------------------------
+# HTML page
+# -------------------------------------------------------------------------
+
+HTML_PAGE = (  # noqa: E501
+    """<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<title>ContextHandoff Demo</title>
+<style>
+  * {
+    box-sizing: border-box;
+    margin: 0;
+    padding: 0;
+  }
+  body {
+    font-family: 'SF Mono', 'Fira Code', monospace;
+    background: #0d1117;
+    color: #c9d1d9;
+    height: 100vh;
+    display: flex;
+    flex-direction: column;
+  }
+  header {
+    background: #161b22;
+    padding: 12px 20px;
+    border-bottom: 1px solid #30363d;
+    display: flex;
+    align-items: center;
+    gap: 16px;
+  }
+  header h1 {
+    font-size: 16px;
+    color: #58a6ff;
+    font-weight: 600;
+  }
+  .badge {
+    font-size: 12px;
+    padding: 3px 10px;
+    border-radius: 12px;
+    background: #21262d;
+    color: #8b949e;
+  }
+  .badge.researcher {
+    background: #1a3a5c;
+    color: #58a6ff;
+  }
+  .badge.analyst {
+    background: #1a4b2e;
+    color: #3fb950;
+  }
+  .badge.handoff {
+    background: #3d1f00;
+    color: #d29922;
+  }
+  .badge.done {
+    background: #21262d;
+    color: #8b949e;
+  }
+  .badge.error {
+    background: #4b1a1a;
+    color: #f85149;
+  }
+  .chat {
+    flex: 1;
+    overflow-y: auto;
+    padding: 16px;
+  }
+  .msg {
+    margin: 8px 0;
+    padding: 10px 14px;
+    border-radius: 8px;
+    line-height: 1.6;
+    white-space: pre-wrap;
+    word-wrap: break-word;
+  }
+  .msg.user {
+    background: #1a3a5c;
+    color: #58a6ff;
+  }
+  .msg.assistant {
+    background: #161b22;
+    color: #c9d1d9;
+  }
+  .msg.assistant.analyst-msg {
+    border-left: 3px solid #3fb950;
+  }
+  .msg.event {
+    background: transparent;
+    color: #8b949e;
+    font-size: 11px;
+    padding: 4px 14px;
+    border-left: 3px solid #30363d;
+  }
+  .msg.event.loop {
+    border-left-color: #58a6ff;
+  }
+  .msg.event.tool {
+    border-left-color: #d29922;
+  }
+  .msg.event.stall {
+    border-left-color: #f85149;
+  }
+  .handoff-banner {
+    margin: 16px 0;
+    padding: 16px;
+    background: #1c1200;
+    border: 1px solid #d29922;
+    border-radius: 8px;
+    text-align: center;
+  }
+  .handoff-banner h3 {
+    color: #d29922;
+    font-size: 14px;
+    margin-bottom: 8px;
+  }
+  .handoff-banner p, .result-banner p {
+    color: #8b949e;
+    font-size: 12px;
+    line-height: 1.5;
+    max-height: 200px;
+    overflow-y: auto;
+    white-space: pre-wrap;
+    text-align: left;
+  }
+  .result-banner {
+    margin: 16px 0;
+    padding: 16px;
+    background: #0a2614;
+    border: 1px solid #3fb950;
+    border-radius: 8px;
+  }
+  .result-banner h3 {
+    color: #3fb950;
+    font-size: 14px;
+    margin-bottom: 8px;
+    text-align: center;
+  }
+  .result-banner .label {
+    color: #58a6ff;
+    font-size: 11px;
+    font-weight: 600;
+    margin-top: 10px;
+    margin-bottom: 2px;
+  }
+  .result-banner .tokens {
+    color: #484f58;
+    font-size: 11px;
+    text-align: center;
+    margin-top: 10px;
+  }
+  .input-bar {
+    padding: 12px 16px;
+    background: #161b22;
+    border-top: 1px solid #30363d;
+    display: flex;
+    gap: 8px;
+  }
+  .input-bar input {
+    flex: 1;
+    background: #0d1117;
+    border: 1px solid #30363d;
+    color: #c9d1d9;
+    padding: 8px 12px;
+    border-radius: 6px;
+    font-family: inherit;
+    font-size: 14px;
+    outline: none;
+  }
+  .input-bar input:focus {
+    border-color: #58a6ff;
+  }
+  .input-bar button {
+    background: #238636;
+    color: #fff;
+    border: none;
+    padding: 8px 20px;
+    border-radius: 6px;
+    cursor: pointer;
+    font-family: inherit;
+    font-weight: 600;
+  }
+  .input-bar button:hover {
+    background: #2ea043;
+  }
+  .input-bar button:disabled {
+    background: #21262d;
+    color: #484f58;
+    cursor: not-allowed;
+  }
+</style>
+</head>
+<body>
+  <header>
+    <h1>ContextHandoff Demo</h1>
+    <span id="phase" class="badge">Idle</span>
+    <span id="iter" class="badge" style="display:none">Step 0</span>
+  </header>
+  <div id="chat" class="chat"></div>
+  <div class="input-bar">
+    <input id="input" type="text"
+           placeholder="Enter a research topic..." autofocus />
+    <button id="go" onclick="run()">Research</button>
+  </div>
+
+<script>
+let ws = null;
+let currentAssistantEl = null;
+let iterCount = 0;
+let currentPhase = 'idle';
+const chat = document.getElementById('chat');
+const phase = document.getElementById('phase');
+const iterEl = document.getElementById('iter');
+const goBtn = document.getElementById('go');
+const inputEl = document.getElementById('input');
+
+inputEl.addEventListener('keydown', e => {
+  if (e.key === 'Enter') run();
+});
+
+function setPhase(text, cls) {
+  phase.textContent = text;
+  phase.className = 'badge ' + cls;
+  currentPhase = cls;
+}
+
+function addMsg(text, cls) {
+  const el = document.createElement('div');
+  el.className = 'msg ' + cls;
+  el.textContent = text;
+  chat.appendChild(el);
+  chat.scrollTop = chat.scrollHeight;
+  return el;
+}
+
+function addHandoffBanner(summary) {
+  const banner = document.createElement('div');
+  banner.className = 'handoff-banner';
+  const h3 = document.createElement('h3');
+  h3.textContent = 'Context Handoff: Researcher -> Analyst';
+  const p = document.createElement('p');
+  p.textContent = summary || 'Passing research context...';
+  banner.appendChild(h3);
+  banner.appendChild(p);
+  chat.appendChild(banner);
+  chat.scrollTop = chat.scrollHeight;
+}
+
+function addResultBanner(researcher, analyst, tokens) {
+  const banner = document.createElement('div');
+  banner.className = 'result-banner';
+  const h3 = document.createElement('h3');
+  h3.textContent = 'Pipeline Complete';
+  banner.appendChild(h3);
+
+  if (researcher && researcher.research_summary) {
+    const lbl = document.createElement('div');
+    lbl.className = 'label';
+    lbl.textContent = 'RESEARCH SUMMARY';
+    banner.appendChild(lbl);
+    const p = document.createElement('p');
+    p.textContent = researcher.research_summary;
+    banner.appendChild(p);
+  }
+
+  if (analyst && analyst.analysis) {
+    const lbl = document.createElement('div');
+    lbl.className = 'label';
+    lbl.textContent = 'ANALYSIS';
+    lbl.style.color = '#3fb950';
+    banner.appendChild(lbl);
+    const p = document.createElement('p');
+    p.textContent = analyst.analysis;
+    banner.appendChild(p);
+  }
+
+  if (tokens) {
+    const t = document.createElement('div');
+    t.className = 'tokens';
+    t.textContent = 'Total tokens: ' + tokens.toLocaleString();
+    banner.appendChild(t);
+  }
+
+  chat.appendChild(banner);
+  chat.scrollTop = chat.scrollHeight;
+}
+
+function connect() {
+  ws = new WebSocket('ws://' + location.host + '/ws');
+  ws.onopen = () => {
+    setPhase('Ready', 'done');
+    goBtn.disabled = false;
+  };
+  ws.onmessage = handleEvent;
+  ws.onerror = () => { setPhase('Error', 'error'); };
+  ws.onclose = () => {
+    setPhase('Reconnecting...', '');
+    goBtn.disabled = true;
+    setTimeout(connect, 2000);
+  };
+}
+
+function handleEvent(msg) {
+  const evt = JSON.parse(msg.data);
+
+  if (evt.type === 'phase') {
+    if (evt.phase === 'researcher') {
+      setPhase('Researcher', 'researcher');
+    } else if (evt.phase === 'handoff') {
+      setPhase('Handoff', 'handoff');
+    } else if (evt.phase === 'analyst') {
+      setPhase('Analyst', 'analyst');
+    }
+    iterCount = 0;
+    iterEl.style.display = 'none';
+  }
+  else if (evt.type === 'llm_text_delta') {
+    if (currentAssistantEl) {
+      currentAssistantEl.textContent += evt.content;
+      chat.scrollTop = chat.scrollHeight;
+    }
+  }
+  else if (evt.type === 'node_loop_iteration') {
+    iterCount = evt.iteration || (iterCount + 1);
+    iterEl.textContent = 'Step ' + iterCount;
+    iterEl.style.display = '';
+  }
+  else if (evt.type === 'tool_call_started') {
+    var info = evt.tool_name + '('
+      + JSON.stringify(evt.tool_input).slice(0, 120) + ')';
+    addMsg('TOOL  ' + info, 'event tool');
+  }
+  else if (evt.type === 'tool_call_completed') {
+    var preview = (evt.result || '').slice(0, 200);
+    var cls = evt.is_error ? 'stall' : 'tool';
+    addMsg(
+      'RESULT  ' + evt.tool_name + ': ' + preview,
+      'event ' + cls
+    );
+    var assistCls = currentPhase === 'analyst'
+      ? 'assistant analyst-msg' : 'assistant';
+    currentAssistantEl = addMsg('', assistCls);
+  }
+  else if (evt.type === 'handoff_context') {
+    addHandoffBanner(evt.summary);
+    var assistCls = 'assistant analyst-msg';
+    currentAssistantEl = addMsg('', assistCls);
+  }
+  else if (evt.type === 'node_result') {
+    if (evt.node_id === 'researcher') {
+      if (currentAssistantEl
+          && !currentAssistantEl.textContent) {
+        currentAssistantEl.remove();
+      }
+    }
+  }
+  else if (evt.type === 'done') {
+    setPhase('Done', 'done');
+    iterEl.style.display = 'none';
+    if (currentAssistantEl
+        && !currentAssistantEl.textContent) {
+      currentAssistantEl.remove();
+    }
+    currentAssistantEl = null;
+    addResultBanner(
+      evt.researcher, evt.analyst, evt.total_tokens
+    );
+    goBtn.disabled = false;
+    inputEl.placeholder = 'Enter another topic...';
+  }
+  else if (evt.type === 'error') {
+    setPhase('Error', 'error');
+    addMsg('ERROR  ' + evt.message, 'event stall');
+    goBtn.disabled = false;
+  }
+  else if (evt.type === 'node_stalled') {
+    addMsg('STALLED  ' + evt.reason, 'event stall');
+  }
+}
+
+function run() {
+  const text = inputEl.value.trim();
+  if (!text || !ws || ws.readyState !== 1) return;
+  chat.innerHTML = '';
+  addMsg(text, 'user');
+  currentAssistantEl = addMsg('', 'assistant');
+  inputEl.value = '';
+  goBtn.disabled = true;
+  ws.send(JSON.stringify({ topic: text }));
+}
+
+connect();
+</script>
+</body>
+</html>"""
+)
+
+
+# -------------------------------------------------------------------------
+# WebSocket handler — sequential Node A → Handoff → Node B
+# -------------------------------------------------------------------------
+
+
+async def handle_ws(websocket):
+    """Run the two-node handoff pipeline per user message."""
+    try:
+        async for raw in websocket:
+            try:
+                msg = json.loads(raw)
+            except Exception:
+                continue
+
+            topic = msg.get("topic", "")
+            if not topic:
+                continue
+
+            logger.info(f"Starting handoff pipeline for: {topic}")
+
+            try:
+                await _run_pipeline(websocket, topic)
+            except websockets.exceptions.ConnectionClosed:
+                logger.info("WebSocket closed during pipeline")
+                return
+            except Exception as e:
+                logger.exception("Pipeline error")
+                try:
+                    await websocket.send(json.dumps({"type": "error", "message": str(e)}))
+                except Exception:
+                    pass
+
+    except websockets.exceptions.ConnectionClosed:
+        pass
+
+
+async def _run_pipeline(websocket, topic: str):
+    """Execute: Node A (research) → ContextHandoff → Node B (analysis)."""
+    import shutil
+
+    # Fresh stores for each run
+    run_dir = Path(tempfile.mkdtemp(prefix="hive_run_", dir=STORE_DIR))
+    store_a = FileConversationStore(run_dir / "node_a")
+    store_b = FileConversationStore(run_dir / "node_b")
+
+    # Shared event bus
+    bus = EventBus()
+
+    async def forward_event(event):
+        try:
+            payload = {"type": event.type.value, **event.data}
+            if event.node_id:
+                payload["node_id"] = event.node_id
+            await websocket.send(json.dumps(payload))
+        except Exception:
+            pass
+
+    bus.subscribe(
+        event_types=[
+            EventType.NODE_LOOP_STARTED,
+            EventType.NODE_LOOP_ITERATION,
+            EventType.NODE_LOOP_COMPLETED,
+            EventType.LLM_TEXT_DELTA,
+            EventType.TOOL_CALL_STARTED,
+            EventType.TOOL_CALL_COMPLETED,
+            EventType.NODE_STALLED,
+        ],
+        handler=forward_event,
+    )
+
+    tools = list(TOOL_REGISTRY.get_tools().values())
+    tool_executor = TOOL_REGISTRY.get_executor()
+
+    # ---- Phase 1: Researcher ------------------------------------------------
+    await websocket.send(json.dumps({"type": "phase", "phase": "researcher"}))
+
+    node_a = EventLoopNode(
+        event_bus=bus,
+        judge=None,  # implicit judge: accept when output_keys filled
+        config=LoopConfig(
+            max_iterations=20,
+            max_tool_calls_per_turn=10,
+            max_history_tokens=32_000,
+        ),
+        conversation_store=store_a,
+        tool_executor=tool_executor,
+    )
+
+    ctx_a = NodeContext(
+        runtime=RUNTIME,
+        node_id="researcher",
+        node_spec=RESEARCHER_SPEC,
+        memory=SharedMemory(),
+        input_data={"topic": topic},
+        llm=LLM,
+        available_tools=tools,
+    )
+
+    result_a = await node_a.execute(ctx_a)
+    logger.info(
+        "Researcher done: success=%s, tokens=%s",
+        result_a.success,
+        result_a.tokens_used,
+    )
+
+    await websocket.send(
+        json.dumps(
+            {
+                "type": "node_result",
+                "node_id": "researcher",
+                "success": result_a.success,
+                "output": result_a.output,
+            }
+        )
+    )
+
+    if not result_a.success:
+        await websocket.send(
+            json.dumps(
+                {
+                    "type": "error",
+                    "message": f"Researcher failed: {result_a.error}",
+                }
+            )
+        )
+        return
+
+    # ---- Phase 2: Context Handoff -------------------------------------------
+    await websocket.send(json.dumps({"type": "phase", "phase": "handoff"}))
+
+    # Restore the researcher's conversation from store
+    conversation_a = await NodeConversation.restore(store_a)
+    if conversation_a is None:
+        await websocket.send(
+            json.dumps(
+                {
+                    "type": "error",
+                    "message": "Failed to restore researcher conversation",
+                }
+            )
+        )
+        return
+
+    handoff_engine = ContextHandoff(llm=LLM)
+    handoff_context = handoff_engine.summarize_conversation(
+        conversation=conversation_a,
+        node_id="researcher",
+        output_keys=["research_summary"],
+    )
+
+    formatted_handoff = ContextHandoff.format_as_input(handoff_context)
+    logger.info(
+        "Handoff: %d turns, ~%d tokens, keys=%s",
+        handoff_context.turn_count,
+        handoff_context.total_tokens_used,
+        list(handoff_context.key_outputs.keys()),
+    )
+
+    # Send handoff context to browser
+    await websocket.send(
+        json.dumps(
+            {
+                "type": "handoff_context",
+                "summary": handoff_context.summary[:500],
+                "turn_count": handoff_context.turn_count,
+                "tokens": handoff_context.total_tokens_used,
+                "key_outputs": handoff_context.key_outputs,
+            }
+        )
+    )
+
+    # ---- Phase 3: Analyst ---------------------------------------------------
+    await websocket.send(json.dumps({"type": "phase", "phase": "analyst"}))
+
+    node_b = EventLoopNode(
+        event_bus=bus,
+        judge=None,  # implicit judge
+        config=LoopConfig(
+            max_iterations=10,
+            max_tool_calls_per_turn=5,
+            max_history_tokens=32_000,
+        ),
+        conversation_store=store_b,
+    )
+
+    ctx_b = NodeContext(
+        runtime=RUNTIME,
+        node_id="analyst",
+        node_spec=ANALYST_SPEC,
+        memory=SharedMemory(),
+        input_data={"context": formatted_handoff},
+        llm=LLM,
+        available_tools=[],
+    )
+
+    result_b = await node_b.execute(ctx_b)
+    logger.info(
+        "Analyst done: success=%s, tokens=%s",
+        result_b.success,
+        result_b.tokens_used,
+    )
+
+    # ---- Done ---------------------------------------------------------------
+    await websocket.send(
+        json.dumps(
+            {
+                "type": "done",
+                "researcher": result_a.output,
+                "analyst": result_b.output,
+                "total_tokens": ((result_a.tokens_used or 0) + (result_b.tokens_used or 0)),
+            }
+        )
+    )
+
+    # Clean up temp stores
+    try:
+        shutil.rmtree(run_dir)
+    except Exception:
+        pass
+
+
+# -------------------------------------------------------------------------
+# HTTP handler
+# -------------------------------------------------------------------------
+
+
+async def process_request(connection, request: Request):
+    """Serve HTML on GET /, upgrade to WebSocket on /ws."""
+    if request.path == "/ws":
+        return None
+    return Response(
+        HTTPStatus.OK,
+        "OK",
+        websockets.Headers({"Content-Type": "text/html; charset=utf-8"}),
+        HTML_PAGE.encode(),
+    )
+
+
+# -------------------------------------------------------------------------
+# Main
+# -------------------------------------------------------------------------
+
+
+async def main():
+    port = 8766
+    async with websockets.serve(
+        handle_ws,
+        "0.0.0.0",
+        port,
+        process_request=process_request,
+    ):
+        logger.info(f"Handoff demo at http://localhost:{port}")
+        logger.info("Enter a research topic to start the pipeline.")
+        await asyncio.Future()
+
+
+if __name__ == "__main__":
+    asyncio.run(main())

core/examples/manual_agent.py

@@ -9,7 +9,7 @@ for understanding the core runtime loop:
 Setup -> Graph definition -> Execution -> Result
 
 Run with:
-    PYTHONPATH=core python core/examples/manual_agent.py
+    uv run python core/examples/manual_agent.py
 """
 
 import asyncio

core/examples/mcp_servers.json

@@ -4,8 +4,8 @@
       "name": "tools",
       "description": "Aden tools including web search, file operations, and PDF reading",
       "transport": "stdio",
-      "command": "python",
-      "args": ["mcp_server.py", "--stdio"],
+      "command": "uv",
+      "args": ["run", "python", "mcp_server.py", "--stdio"],
       "cwd": "../tools",
       "env": {
         "BRAVE_SEARCH_API_KEY": "${BRAVE_SEARCH_API_KEY}"

core/framework/builder/workflow.py

@@ -15,7 +15,7 @@ You cannot skip steps or bypass validation.
 
 from collections.abc import Callable
 from datetime import datetime
-from enum import Enum
+from enum import StrEnum
 from pathlib import Path
 from typing import Any
 
@@ -26,7 +26,7 @@ from framework.graph.goal import Goal
 from framework.graph.node import NodeSpec
 
 
-class BuildPhase(str, Enum):
+class BuildPhase(StrEnum):
     """Current phase of the build process."""
 
     INIT = "init"  # Just started

core/framework/cli.py

@@ -44,6 +44,13 @@ def _configure_paths():
         if exports_str not in sys.path:
             sys.path.insert(0, exports_str)
 
+    # Add examples/templates/ to sys.path so template agents are importable
+    templates_dir = project_root / "examples" / "templates"
+    if templates_dir.is_dir():
+        templates_str = str(templates_dir)
+        if templates_str not in sys.path:
+            sys.path.insert(0, templates_str)
+
     # Ensure core/ is also in sys.path (for non-editable-install scenarios)
     core_str = str(project_root / "core")
     if (project_root / "core").is_dir() and core_str not in sys.path:

core/framework/config.py

@@ -0,0 +1,74 @@
+"""Shared Hive configuration utilities.
+
+Centralises reading of ~/.hive/configuration.json so that the runner
+and every agent template share one implementation instead of copy-pasting
+helper functions.
+"""
+
+import json
+import os
+from dataclasses import dataclass, field
+from pathlib import Path
+from typing import Any
+
+from framework.graph.edge import DEFAULT_MAX_TOKENS
+
+# ---------------------------------------------------------------------------
+# Low-level config file access
+# ---------------------------------------------------------------------------
+
+HIVE_CONFIG_FILE = Path.home() / ".hive" / "configuration.json"
+
+
+def get_hive_config() -> dict[str, Any]:
+    """Load hive configuration from ~/.hive/configuration.json."""
+    if not HIVE_CONFIG_FILE.exists():
+        return {}
+    try:
+        with open(HIVE_CONFIG_FILE, encoding="utf-8-sig") as f:
+            return json.load(f)
+    except (json.JSONDecodeError, OSError):
+        return {}
+
+
+# ---------------------------------------------------------------------------
+# Derived helpers
+# ---------------------------------------------------------------------------
+
+
+def get_preferred_model() -> str:
+    """Return the user's preferred LLM model string (e.g. 'anthropic/claude-sonnet-4-20250514')."""
+    llm = get_hive_config().get("llm", {})
+    if llm.get("provider") and llm.get("model"):
+        return f"{llm['provider']}/{llm['model']}"
+    return "anthropic/claude-sonnet-4-20250514"
+
+
+def get_max_tokens() -> int:
+    """Return the configured max_tokens, falling back to DEFAULT_MAX_TOKENS."""
+    return get_hive_config().get("llm", {}).get("max_tokens", DEFAULT_MAX_TOKENS)
+
+
+def get_api_key() -> str | None:
+    """Return the API key from the environment variable specified in configuration."""
+    llm = get_hive_config().get("llm", {})
+    api_key_env_var = llm.get("api_key_env_var")
+    if api_key_env_var:
+        return os.environ.get(api_key_env_var)
+    return None
+
+
+# ---------------------------------------------------------------------------
+# RuntimeConfig – shared across agent templates
+# ---------------------------------------------------------------------------
+
+
+@dataclass
+class RuntimeConfig:
+    """Agent runtime configuration loaded from ~/.hive/configuration.json."""
+
+    model: str = field(default_factory=get_preferred_model)
+    temperature: float = 0.7
+    max_tokens: int = field(default_factory=get_max_tokens)
+    api_key: str | None = field(default_factory=get_api_key)
+    api_base: str | None = None

core/framework/credentials/aden/client.py

@@ -143,19 +143,34 @@ class AdenCredentialResponse:
     def from_dict(
         cls, data: dict[str, Any], integration_id: str | None = None
     ) -> AdenCredentialResponse:
-        """Create from API response dictionary."""
+        """Create from API response dictionary or normalized credential dict."""
+
         expires_at = None
         if data.get("expires_at"):
             expires_at = datetime.fromisoformat(data["expires_at"].replace("Z", "+00:00"))
 
+        resolved_integration_id = (
+            integration_id
+            or data.get("integration_id")
+            or data.get("alias")
+            or data.get("provider", "")
+        )
+
+        resolved_integration_type = data.get("integration_type") or data.get("provider", "")
+        metadata = data.get("metadata")
+        if metadata is None and data.get("email"):
+            metadata = {"email": data.get("email")}
+        if metadata is None:
+            metadata = {}
+
         return cls(
-            integration_id=integration_id or data.get("alias", data.get("provider", "")),
-            integration_type=data.get("provider", ""),
+            integration_id=resolved_integration_id,
+            integration_type=resolved_integration_type,
             access_token=data["access_token"],
             token_type=data.get("token_type", "Bearer"),
             expires_at=expires_at,
             scopes=data.get("scopes", []),
-            metadata={"email": data.get("email")} if data.get("email") else {},
+            metadata=metadata,
         )
 
 

core/framework/credentials/aden/storage.py

@@ -64,6 +64,8 @@ class AdenCachedStorage(CredentialStorage):
     - **Reads**: Try local cache first, fallback to Aden if stale/missing
     - **Writes**: Always write to local cache
     - **Offline resilience**: Uses cached credentials when Aden is unreachable
+    - **Provider-based lookup**: Match credentials by provider name (e.g., "hubspot")
+      when direct ID lookup fails, since Aden uses hash-based IDs internally.
 
     The cache TTL determines how long to trust local credentials before
     checking with the Aden server for updates. This balances:
@@ -85,6 +87,7 @@ class AdenCachedStorage(CredentialStorage):
 
         # First access fetches from Aden
         # Subsequent accesses use cache until TTL expires
+        # Can look up by provider name OR credential ID
         token = store.get_key("hubspot", "access_token")
     """
 
@@ -111,21 +114,24 @@ class AdenCachedStorage(CredentialStorage):
         self._cache_ttl = timedelta(seconds=cache_ttl_seconds)
         self._prefer_local = prefer_local
         self._cache_timestamps: dict[str, datetime] = {}
+        # Index: provider name (e.g., "hubspot") -> credential hash ID
+        self._provider_index: dict[str, str] = {}
 
     def save(self, credential: CredentialObject) -> None:
         """
-        Save credential to local cache.
+        Save credential to local cache and update provider index.
 
         Args:
             credential: The credential to save.
         """
         self._local.save(credential)
         self._cache_timestamps[credential.id] = datetime.now(UTC)
+        self._index_provider(credential)
         logger.debug(f"Cached credential '{credential.id}'")
 
     def load(self, credential_id: str) -> CredentialObject | None:
         """
-        Load credential from cache, with Aden fallback.
+        Load credential from cache, with Aden fallback and provider-based lookup.
 
         The loading strategy depends on the `prefer_local` setting:
 
@@ -141,8 +147,37 @@ class AdenCachedStorage(CredentialStorage):
         2. Update local cache with response
         3. Fall back to local cache only if Aden fails
 
+        Provider-based lookup:
+        When a provider index mapping exists for the credential_id (e.g.,
+        "hubspot" → hash ID), the Aden-synced credential is loaded first.
+        This ensures fresh OAuth tokens from Aden take priority over stale
+        local credentials (env vars, old encrypted files).
+
         Args:
-            credential_id: The credential identifier.
+            credential_id: The credential identifier or provider name.
+
+        Returns:
+            CredentialObject if found, None otherwise.
+        """
+        # Check provider index first — Aden-synced credentials take priority
+        resolved_id = self._provider_index.get(credential_id)
+        if resolved_id and resolved_id != credential_id:
+            result = self._load_by_id(resolved_id)
+            if result is not None:
+                logger.info(
+                    f"Loaded credential '{credential_id}' via provider index (id='{resolved_id}')"
+                )
+                return result
+
+        # Direct lookup (exact credential_id match)
+        return self._load_by_id(credential_id)
+
+    def _load_by_id(self, credential_id: str) -> CredentialObject | None:
+        """
+        Load credential by exact ID from cache, with Aden fallback.
+
+        Args:
+            credential_id: The exact credential identifier.
 
         Returns:
             CredentialObject if found, None otherwise.
@@ -200,15 +235,21 @@ class AdenCachedStorage(CredentialStorage):
 
     def exists(self, credential_id: str) -> bool:
         """
-        Check if credential exists in local cache.
+        Check if credential exists in local cache (by ID or provider name).
 
         Args:
-            credential_id: The credential identifier.
+            credential_id: The credential identifier or provider name.
 
         Returns:
             True if credential exists locally.
         """
-        return self._local.exists(credential_id)
+        if self._local.exists(credential_id):
+            return True
+        # Check provider index
+        resolved_id = self._provider_index.get(credential_id)
+        if resolved_id and resolved_id != credential_id:
+            return self._local.exists(resolved_id)
+        return False
 
     def _is_cache_fresh(self, credential_id: str) -> bool:
         """
@@ -242,6 +283,47 @@ class AdenCachedStorage(CredentialStorage):
         self._cache_timestamps.clear()
         logger.debug("Invalidated all cache entries")
 
+    def _index_provider(self, credential: CredentialObject) -> None:
+        """
+        Index a credential by its provider/integration type.
+
+        Aden credentials carry an ``_integration_type`` key whose value is
+        the provider name (e.g., ``hubspot``).  This method maps that
+        provider name to the credential's hash ID so that subsequent
+        ``load("hubspot")`` calls resolve to the correct credential.
+
+        Args:
+            credential: The credential to index.
+        """
+        integration_type_key = credential.keys.get("_integration_type")
+        if integration_type_key is None:
+            return
+        provider_name = integration_type_key.value.get_secret_value()
+        if provider_name:
+            self._provider_index[provider_name] = credential.id
+            logger.debug(f"Indexed provider '{provider_name}' -> '{credential.id}'")
+
+    def rebuild_provider_index(self) -> int:
+        """
+        Rebuild the provider index from all locally cached credentials.
+
+        Useful after loading from disk when the in-memory index is empty.
+
+        Returns:
+            Number of provider mappings indexed.
+        """
+        self._provider_index.clear()
+        indexed = 0
+        for cred_id in self._local.list_all():
+            cred = self._local.load(cred_id)
+            if cred:
+                before = len(self._provider_index)
+                self._index_provider(cred)
+                if len(self._provider_index) > before:
+                    indexed += 1
+        logger.debug(f"Rebuilt provider index with {indexed} mappings")
+        return indexed
+
     def sync_all_from_aden(self) -> int:
         """
         Sync all credentials from Aden server to local cache.

core/framework/credentials/aden/tests/test_aden_sync.py

@@ -589,6 +589,149 @@ class TestAdenCachedStorage:
         assert info["stale"]["is_fresh"] is False
         assert info["stale"]["ttl_remaining_seconds"] == 0
 
+    def test_save_indexes_provider(self, cached_storage):
+        """Test save builds the provider index from _integration_type key."""
+        cred = CredentialObject(
+            id="aHVic3BvdDp0ZXN0OjEzNjExOjExNTI1",
+            credential_type=CredentialType.OAUTH2,
+            keys={
+                "access_token": CredentialKey(
+                    name="access_token",
+                    value=SecretStr("token-value"),
+                ),
+                "_integration_type": CredentialKey(
+                    name="_integration_type",
+                    value=SecretStr("hubspot"),
+                ),
+            },
+        )
+
+        cached_storage.save(cred)
+
+        assert cached_storage._provider_index["hubspot"] == "aHVic3BvdDp0ZXN0OjEzNjExOjExNTI1"
+
+    def test_load_by_provider_name(self, cached_storage):
+        """Test load resolves provider name to hash-based credential ID."""
+        hash_id = "aHVic3BvdDp0ZXN0OjEzNjExOjExNTI1"
+        cred = CredentialObject(
+            id=hash_id,
+            credential_type=CredentialType.OAUTH2,
+            keys={
+                "access_token": CredentialKey(
+                    name="access_token",
+                    value=SecretStr("hubspot-token"),
+                ),
+                "_integration_type": CredentialKey(
+                    name="_integration_type",
+                    value=SecretStr("hubspot"),
+                ),
+            },
+        )
+
+        # Save builds the index
+        cached_storage.save(cred)
+
+        # Load by provider name should resolve to the hash ID
+        loaded = cached_storage.load("hubspot")
+
+        assert loaded is not None
+        assert loaded.id == hash_id
+        assert loaded.keys["access_token"].value.get_secret_value() == "hubspot-token"
+
+    def test_load_by_direct_id_still_works(self, cached_storage):
+        """Test load by direct hash ID still works as before."""
+        hash_id = "aHVic3BvdDp0ZXN0OjEzNjExOjExNTI1"
+        cred = CredentialObject(
+            id=hash_id,
+            credential_type=CredentialType.OAUTH2,
+            keys={
+                "access_token": CredentialKey(
+                    name="access_token",
+                    value=SecretStr("token"),
+                ),
+                "_integration_type": CredentialKey(
+                    name="_integration_type",
+                    value=SecretStr("hubspot"),
+                ),
+            },
+        )
+
+        cached_storage.save(cred)
+
+        # Direct ID lookup should still work
+        loaded = cached_storage.load(hash_id)
+
+        assert loaded is not None
+        assert loaded.id == hash_id
+
+    def test_exists_by_provider_name(self, cached_storage):
+        """Test exists resolves provider name to hash-based credential ID."""
+        hash_id = "c2xhY2s6dGVzdDo5OTk="
+        cred = CredentialObject(
+            id=hash_id,
+            credential_type=CredentialType.OAUTH2,
+            keys={
+                "access_token": CredentialKey(
+                    name="access_token",
+                    value=SecretStr("slack-token"),
+                ),
+                "_integration_type": CredentialKey(
+                    name="_integration_type",
+                    value=SecretStr("slack"),
+                ),
+            },
+        )
+
+        cached_storage.save(cred)
+
+        assert cached_storage.exists("slack") is True
+        assert cached_storage.exists(hash_id) is True
+        assert cached_storage.exists("nonexistent") is False
+
+    def test_rebuild_provider_index(self, cached_storage, local_storage):
+        """Test rebuild_provider_index reconstructs from local storage."""
+        # Manually save credentials to local storage (bypassing cached_storage.save)
+        for provider_name, hash_id in [("hubspot", "hash_hub"), ("slack", "hash_slack")]:
+            cred = CredentialObject(
+                id=hash_id,
+                credential_type=CredentialType.OAUTH2,
+                keys={
+                    "_integration_type": CredentialKey(
+                        name="_integration_type",
+                        value=SecretStr(provider_name),
+                    ),
+                },
+            )
+            local_storage.save(cred)
+
+        # Index should be empty (we bypassed save)
+        assert len(cached_storage._provider_index) == 0
+
+        # Rebuild
+        indexed = cached_storage.rebuild_provider_index()
+
+        assert indexed == 2
+        assert cached_storage._provider_index["hubspot"] == "hash_hub"
+        assert cached_storage._provider_index["slack"] == "hash_slack"
+
+    def test_save_without_integration_type_no_index(self, cached_storage):
+        """Test save does not index credentials without _integration_type key."""
+        cred = CredentialObject(
+            id="plain-cred",
+            credential_type=CredentialType.API_KEY,
+            keys={
+                "api_key": CredentialKey(
+                    name="api_key",
+                    value=SecretStr("key-value"),
+                ),
+            },
+        )
+
+        cached_storage.save(cred)
+
+        assert "plain-cred" not in cached_storage._provider_index
+        assert len(cached_storage._provider_index) == 0
+
 
 # =============================================================================
 # Integration Tests

core/framework/credentials/models.py

@@ -8,7 +8,7 @@ containing one or more keys (e.g., api_key, access_token, refresh_token).
 from __future__ import annotations
 
 from datetime import UTC, datetime
-from enum import Enum
+from enum import StrEnum
 from typing import Any
 
 from pydantic import BaseModel, Field, SecretStr
@@ -19,7 +19,7 @@ def _utc_now() -> datetime:
     return datetime.now(UTC)
 
 
-class CredentialType(str, Enum):
+class CredentialType(StrEnum):
     """Types of credentials the store can manage."""
 
     API_KEY = "api_key"

core/framework/credentials/oauth2/base_provider.py

@@ -96,7 +96,7 @@ class BaseOAuth2Provider(CredentialProvider):
                 self._client = httpx.Client(timeout=self.config.request_timeout)
             except ImportError as e:
                 raise ImportError(
-                    "OAuth2 provider requires 'httpx'. Install with: pip install httpx"
+                    "OAuth2 provider requires 'httpx'. Install with: uv pip install httpx"
                 ) from e
         return self._client
 

core/framework/credentials/oauth2/provider.py

@@ -11,11 +11,11 @@ from __future__ import annotations
 
 from dataclasses import dataclass, field
 from datetime import UTC, datetime, timedelta
-from enum import Enum
+from enum import StrEnum
 from typing import Any
 
 
-class TokenPlacement(str, Enum):
+class TokenPlacement(StrEnum):
     """Where to place the access token in HTTP requests."""
 
     HEADER_BEARER = "header_bearer"

core/framework/credentials/storage.py

@@ -136,7 +136,8 @@ class EncryptedFileStorage(CredentialStorage):
             from cryptography.fernet import Fernet
         except ImportError as e:
             raise ImportError(
-                "Encrypted storage requires 'cryptography'. Install with: pip install cryptography"
+                "Encrypted storage requires 'cryptography'. "
+                "Install with: uv pip install cryptography"
             ) from e
 
         self.base_path = Path(base_path or self.DEFAULT_PATH).expanduser()

core/framework/credentials/vault/hashicorp.py

@@ -2,7 +2,7 @@
 HashiCorp Vault storage adapter.
 
 Provides integration with HashiCorp Vault for enterprise secret management.
-Requires the 'hvac' package: pip install hvac
+Requires the 'hvac' package: uv pip install hvac
 """
 
 from __future__ import annotations
@@ -66,7 +66,7 @@ class HashiCorpVaultStorage(CredentialStorage):
         - AWS IAM auth method
 
     Requirements:
-        pip install hvac
+        uv pip install hvac
     """
 
     def __init__(
@@ -97,7 +97,7 @@ class HashiCorpVaultStorage(CredentialStorage):
             import hvac
         except ImportError as e:
             raise ImportError(
-                "HashiCorp Vault support requires 'hvac'. Install with: pip install hvac"
+                "HashiCorp Vault support requires 'hvac'. Install with: uv pip install hvac"
             ) from e
 
         self._url = url

core/framework/graph/__init__.py

@@ -1,8 +1,22 @@
 """Graph structures: Goals, Nodes, Edges, and Flexible Execution."""
 
+from framework.graph.client_io import (
+    ActiveNodeClientIO,
+    ClientIOGateway,
+    InertNodeClientIO,
+    NodeClientIO,
+)
 from framework.graph.code_sandbox import CodeSandbox, safe_eval, safe_exec
+from framework.graph.context_handoff import ContextHandoff, HandoffContext
 from framework.graph.conversation import ConversationStore, Message, NodeConversation
-from framework.graph.edge import EdgeCondition, EdgeSpec, GraphSpec
+from framework.graph.edge import DEFAULT_MAX_TOKENS, EdgeCondition, EdgeSpec, GraphSpec
+from framework.graph.event_loop_node import (
+    EventLoopNode,
+    JudgeProtocol,
+    JudgeVerdict,
+    LoopConfig,
+    OutputAccumulator,
+)
 from framework.graph.executor import GraphExecutor
 from framework.graph.flexible_executor import ExecutorConfig, FlexibleGraphExecutor
 from framework.graph.goal import Constraint, Goal, GoalStatus, SuccessCriterion
@@ -44,6 +58,7 @@ __all__ = [
     "EdgeSpec",
     "EdgeCondition",
     "GraphSpec",
+    "DEFAULT_MAX_TOKENS",
     # Executor (fixed graph)
     "GraphExecutor",
     # Plan (flexible execution)
@@ -77,4 +92,18 @@ __all__ = [
     "NodeConversation",
     "ConversationStore",
     "Message",
+    # Event Loop
+    "EventLoopNode",
+    "LoopConfig",
+    "OutputAccumulator",
+    "JudgeProtocol",
+    "JudgeVerdict",
+    # Context Handoff
+    "ContextHandoff",
+    "HandoffContext",
+    # Client I/O
+    "NodeClientIO",
+    "ActiveNodeClientIO",
+    "InertNodeClientIO",
+    "ClientIOGateway",
 ]

core/framework/graph/checkpoint_config.py

@@ -0,0 +1,85 @@
+"""
+Checkpoint Configuration - Controls checkpoint behavior during execution.
+"""
+
+from dataclasses import dataclass
+
+
+@dataclass
+class CheckpointConfig:
+    """
+    Configuration for checkpoint behavior during graph execution.
+
+    Controls when checkpoints are created, how they're stored,
+    and when they're pruned.
+    """
+
+    # Enable/disable checkpointing
+    enabled: bool = True
+
+    # When to checkpoint
+    checkpoint_on_node_start: bool = True
+    checkpoint_on_node_complete: bool = True
+
+    # Pruning (time-based)
+    checkpoint_max_age_days: int = 7  # Prune checkpoints older than 1 week
+    prune_every_n_nodes: int = 10  # Check for pruning every N nodes
+
+    # Performance
+    async_checkpoint: bool = True  # Don't block execution on checkpoint writes
+
+    # What to include in checkpoints
+    include_full_memory: bool = True
+    include_metrics: bool = True
+
+    def should_checkpoint_node_start(self) -> bool:
+        """Check if should checkpoint before node execution."""
+        return self.enabled and self.checkpoint_on_node_start
+
+    def should_checkpoint_node_complete(self) -> bool:
+        """Check if should checkpoint after node execution."""
+        return self.enabled and self.checkpoint_on_node_complete
+
+    def should_prune_checkpoints(self, nodes_executed: int) -> bool:
+        """
+        Check if should prune checkpoints based on execution progress.
+
+        Args:
+            nodes_executed: Number of nodes executed so far
+
+        Returns:
+            True if should check for old checkpoints and prune them
+        """
+        return (
+            self.enabled
+            and self.prune_every_n_nodes > 0
+            and nodes_executed % self.prune_every_n_nodes == 0
+        )
+
+
+# Default configuration for most agents
+DEFAULT_CHECKPOINT_CONFIG = CheckpointConfig(
+    enabled=True,
+    checkpoint_on_node_start=True,
+    checkpoint_on_node_complete=True,
+    checkpoint_max_age_days=7,
+    prune_every_n_nodes=10,
+    async_checkpoint=True,
+)
+
+
+# Minimal configuration (only checkpoint at node completion)
+MINIMAL_CHECKPOINT_CONFIG = CheckpointConfig(
+    enabled=True,
+    checkpoint_on_node_start=False,
+    checkpoint_on_node_complete=True,
+    checkpoint_max_age_days=7,
+    prune_every_n_nodes=20,
+    async_checkpoint=True,
+)
+
+
+# Disabled configuration (no checkpointing)
+DISABLED_CHECKPOINT_CONFIG = CheckpointConfig(
+    enabled=False,
+)

core/framework/graph/client_io.py

@@ -0,0 +1,170 @@
+"""
+Client I/O gateway for graph nodes.
+
+Provides the bridge between node code and external clients:
+- ActiveNodeClientIO: for client_facing=True nodes (streams output, accepts input)
+- InertNodeClientIO: for client_facing=False nodes (logs internally, redirects input)
+- ClientIOGateway: factory that creates the right variant per node
+"""
+
+from __future__ import annotations
+
+import asyncio
+import logging
+from abc import ABC, abstractmethod
+from collections.abc import AsyncIterator
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from framework.runtime.event_bus import EventBus
+
+logger = logging.getLogger(__name__)
+
+
+class NodeClientIO(ABC):
+    """Abstract base for node client I/O."""
+
+    @abstractmethod
+    async def emit_output(self, content: str, is_final: bool = False) -> None:
+        """Emit output content. If is_final=True, signal end of stream."""
+
+    @abstractmethod
+    async def request_input(self, prompt: str = "", timeout: float | None = None) -> str:
+        """Request input. Behavior depends on whether the node is client-facing."""
+
+
+class ActiveNodeClientIO(NodeClientIO):
+    """
+    Client I/O for client_facing=True nodes.
+
+    - emit_output() queues content and publishes CLIENT_OUTPUT_DELTA.
+    - request_input() publishes CLIENT_INPUT_REQUESTED, then awaits provide_input().
+    - output_stream() yields queued content until the final sentinel.
+    """
+
+    def __init__(
+        self,
+        node_id: str,
+        event_bus: EventBus | None = None,
+    ) -> None:
+        self.node_id = node_id
+        self._event_bus = event_bus
+
+        self._output_queue: asyncio.Queue[str | None] = asyncio.Queue()
+        self._output_snapshot = ""
+
+        self._input_event: asyncio.Event | None = None
+        self._input_result: str | None = None
+
+    async def emit_output(self, content: str, is_final: bool = False) -> None:
+        self._output_snapshot += content
+        await self._output_queue.put(content)
+
+        if self._event_bus is not None:
+            await self._event_bus.emit_client_output_delta(
+                stream_id=self.node_id,
+                node_id=self.node_id,
+                content=content,
+                snapshot=self._output_snapshot,
+            )
+
+        if is_final:
+            await self._output_queue.put(None)
+
+    async def request_input(self, prompt: str = "", timeout: float | None = None) -> str:
+        if self._input_event is not None:
+            raise RuntimeError("request_input already pending for this node")
+
+        self._input_event = asyncio.Event()
+        self._input_result = None
+
+        if self._event_bus is not None:
+            await self._event_bus.emit_client_input_requested(
+                stream_id=self.node_id,
+                node_id=self.node_id,
+                prompt=prompt,
+            )
+
+        try:
+            if timeout is not None:
+                await asyncio.wait_for(self._input_event.wait(), timeout=timeout)
+            else:
+                await self._input_event.wait()
+        finally:
+            self._input_event = None
+
+        if self._input_result is None:
+            raise RuntimeError("input event was set but no input was provided")
+        result = self._input_result
+        self._input_result = None
+        return result
+
+    async def provide_input(self, content: str) -> None:
+        """Called externally to fulfill a pending request_input()."""
+        if self._input_event is None:
+            raise RuntimeError("no pending request_input to fulfill")
+        self._input_result = content
+        self._input_event.set()
+
+    async def output_stream(self) -> AsyncIterator[str]:
+        """Async iterator that yields output chunks until the final sentinel."""
+        while True:
+            chunk = await self._output_queue.get()
+            if chunk is None:
+                break
+            yield chunk
+
+
+class InertNodeClientIO(NodeClientIO):
+    """
+    Client I/O for client_facing=False nodes.
+
+    - emit_output() publishes NODE_INTERNAL_OUTPUT (content is not discarded).
+    - request_input() publishes NODE_INPUT_BLOCKED and returns a redirect string.
+    """
+
+    def __init__(
+        self,
+        node_id: str,
+        event_bus: EventBus | None = None,
+    ) -> None:
+        self.node_id = node_id
+        self._event_bus = event_bus
+
+    async def emit_output(self, content: str, is_final: bool = False) -> None:
+        if self._event_bus is not None:
+            await self._event_bus.emit_node_internal_output(
+                stream_id=self.node_id,
+                node_id=self.node_id,
+                content=content,
+            )
+
+    async def request_input(self, prompt: str = "", timeout: float | None = None) -> str:
+        if self._event_bus is not None:
+            await self._event_bus.emit_node_input_blocked(
+                stream_id=self.node_id,
+                node_id=self.node_id,
+                prompt=prompt,
+            )
+        return (
+            "You are an internal processing node. There is no user to interact with."
+            " Work with the data provided in your inputs to complete your task."
+        )
+
+
+class ClientIOGateway:
+    """Factory that creates the appropriate NodeClientIO for a node."""
+
+    def __init__(self, event_bus: EventBus | None = None) -> None:
+        self._event_bus = event_bus
+
+    def create_io(self, node_id: str, client_facing: bool) -> NodeClientIO:
+        if client_facing:
+            return ActiveNodeClientIO(
+                node_id=node_id,
+                event_bus=self._event_bus,
+            )
+        return InertNodeClientIO(
+            node_id=node_id,
+            event_bus=self._event_bus,
+        )

core/framework/graph/context_handoff.py

@@ -0,0 +1,191 @@
+"""Context handoff: summarize a completed NodeConversation for the next graph node."""
+
+from __future__ import annotations
+
+import logging
+from dataclasses import dataclass
+from typing import TYPE_CHECKING, Any
+
+from framework.graph.conversation import _try_extract_key
+
+if TYPE_CHECKING:
+    from framework.graph.conversation import NodeConversation
+    from framework.llm.provider import LLMProvider
+
+logger = logging.getLogger(__name__)
+
+_TRUNCATE_CHARS = 500
+
+
+# ---------------------------------------------------------------------------
+# Data
+# ---------------------------------------------------------------------------
+
+
+@dataclass
+class HandoffContext:
+    """Structured summary of a completed node conversation."""
+
+    source_node_id: str
+    summary: str
+    key_outputs: dict[str, Any]
+    turn_count: int
+    total_tokens_used: int
+
+
+# ---------------------------------------------------------------------------
+# ContextHandoff
+# ---------------------------------------------------------------------------
+
+
+class ContextHandoff:
+    """Summarize a completed NodeConversation into a HandoffContext.
+
+    Parameters
+    ----------
+    llm : LLMProvider | None
+        Optional LLM provider for abstractive summarization.
+        When *None*, all summarization uses the extractive fallback.
+    """
+
+    def __init__(self, llm: LLMProvider | None = None) -> None:
+        self.llm = llm
+
+    # ------------------------------------------------------------------
+    # Public API
+    # ------------------------------------------------------------------
+
+    def summarize_conversation(
+        self,
+        conversation: NodeConversation,
+        node_id: str,
+        output_keys: list[str] | None = None,
+    ) -> HandoffContext:
+        """Produce a HandoffContext from *conversation*.
+
+        1. Extracts turn_count & total_tokens_used (sync properties).
+        2. Extracts key_outputs by scanning assistant messages most-recent-first.
+        3. Builds a summary via the LLM (if available) or extractive fallback.
+        """
+        turn_count = conversation.turn_count
+        total_tokens_used = conversation.estimate_tokens()
+        messages = conversation.messages  # defensive copy
+
+        # --- key outputs ---------------------------------------------------
+        key_outputs: dict[str, Any] = {}
+        if output_keys:
+            remaining = set(output_keys)
+            for msg in reversed(messages):
+                if msg.role != "assistant" or not remaining:
+                    continue
+                for key in list(remaining):
+                    value = _try_extract_key(msg.content, key)
+                    if value is not None:
+                        key_outputs[key] = value
+                        remaining.discard(key)
+
+        # --- summary -------------------------------------------------------
+        if self.llm is not None:
+            try:
+                summary = self._llm_summary(messages, output_keys or [])
+            except Exception:
+                logger.warning(
+                    "LLM summarization failed; falling back to extractive.",
+                    exc_info=True,
+                )
+                summary = self._extractive_summary(messages)
+        else:
+            summary = self._extractive_summary(messages)
+
+        return HandoffContext(
+            source_node_id=node_id,
+            summary=summary,
+            key_outputs=key_outputs,
+            turn_count=turn_count,
+            total_tokens_used=total_tokens_used,
+        )
+
+    @staticmethod
+    def format_as_input(handoff: HandoffContext) -> str:
+        """Render *handoff* as structured plain text for the next node's input."""
+        header = (
+            f"--- CONTEXT FROM: {handoff.source_node_id} "
+            f"({handoff.turn_count} turns, ~{handoff.total_tokens_used} tokens) ---"
+        )
+
+        sections: list[str] = [header, ""]
+
+        if handoff.key_outputs:
+            sections.append("KEY OUTPUTS:")
+            for k, v in handoff.key_outputs.items():
+                sections.append(f"- {k}: {v}")
+            sections.append("")
+
+        summary_text = handoff.summary or "No summary available."
+        sections.append("SUMMARY:")
+        sections.append(summary_text)
+        sections.append("")
+        sections.append("--- END CONTEXT ---")
+
+        return "\n".join(sections)
+
+    # ------------------------------------------------------------------
+    # Private helpers
+    # ------------------------------------------------------------------
+
+    @staticmethod
+    def _extractive_summary(messages: list) -> str:
+        """Build a summary from key assistant messages without an LLM.
+
+        Strategy:
+        - Include the first assistant message (initial assessment).
+        - Include the last assistant message (final conclusion).
+        - Truncate each to ~500 chars.
+        """
+        if not messages:
+            return "Empty conversation."
+
+        assistant_msgs = [m for m in messages if m.role == "assistant"]
+        if not assistant_msgs:
+            return "No assistant responses."
+
+        parts: list[str] = []
+
+        first = assistant_msgs[0].content
+        parts.append(first[:_TRUNCATE_CHARS])
+
+        if len(assistant_msgs) > 1:
+            last = assistant_msgs[-1].content
+            parts.append(last[:_TRUNCATE_CHARS])
+
+        return "\n\n".join(parts)
+
+    def _llm_summary(self, messages: list, output_keys: list[str]) -> str:
+        """Produce a summary by calling the LLM provider."""
+        if self.llm is None:
+            raise ValueError("_llm_summary called without an LLM provider")
+
+        conversation_text = "\n".join(f"[{m.role}]: {m.content}" for m in messages)
+
+        key_hint = ""
+        if output_keys:
+            key_hint = (
+                "\nThe following output keys are especially important: "
+                + ", ".join(output_keys)
+                + ".\n"
+            )
+
+        system_prompt = (
+            "You are a concise summarizer. Given the conversation below, "
+            "produce a brief summary (at most ~500 tokens) that captures the "
+            "key decisions, findings, and outcomes. Focus on what was concluded "
+            "rather than the back-and-forth process." + key_hint
+        )
+
+        response = self.llm.complete(
+            messages=[{"role": "user", "content": conversation_text}],
+            system=system_prompt,
+            max_tokens=500,
+        )
+
+        return response.content.strip()

core/framework/graph/conversation.py

@@ -75,6 +75,16 @@ class Message:
         )
 
 
+def _extract_spillover_filename(content: str) -> str | None:
+    """Extract spillover filename from a truncated tool result.
+
+    Matches the pattern produced by EventLoopNode._truncate_tool_result():
+        "saved to 'tool_github_list_stargazers_abc123.txt'"
+    """
+    match = re.search(r"saved to '([^']+)'", content)
+    return match.group(1) if match else None
+
+
 # ---------------------------------------------------------------------------
 # ConversationStore protocol (Phase 2)
 # ---------------------------------------------------------------------------
@@ -108,6 +118,50 @@ class ConversationStore(Protocol):
 # ---------------------------------------------------------------------------
 
 
+def _try_extract_key(content: str, key: str) -> str | None:
+    """Try 4 strategies to extract a *key*'s value from message content.
+
+    Strategies (in order):
+    1. Whole message is JSON — ``json.loads``, check for key.
+    2. Embedded JSON via ``find_json_object`` helper.
+    3. Colon format: ``key: value``.
+    4. Equals format: ``key = value``.
+    """
+    from framework.graph.node import find_json_object
+
+    # 1. Whole message is JSON
+    try:
+        parsed = json.loads(content)
+        if isinstance(parsed, dict) and key in parsed:
+            val = parsed[key]
+            return json.dumps(val) if not isinstance(val, str) else val
+    except (json.JSONDecodeError, TypeError):
+        pass
+
+    # 2. Embedded JSON via find_json_object
+    json_str = find_json_object(content)
+    if json_str:
+        try:
+            parsed = json.loads(json_str)
+            if isinstance(parsed, dict) and key in parsed:
+                val = parsed[key]
+                return json.dumps(val) if not isinstance(val, str) else val
+        except (json.JSONDecodeError, TypeError):
+            pass
+
+    # 3. Colon format: key: value
+    match = re.search(rf"\b{re.escape(key)}\s*:\s*(.+)", content)
+    if match:
+        return match.group(1).strip()
+
+    # 4. Equals format: key = value
+    match = re.search(rf"\b{re.escape(key)}\s*=\s*(.+)", content)
+    if match:
+        return match.group(1).strip()
+
+    return None
+
+
 class NodeConversation:
     """Message history for a graph node with optional write-through persistence.
 
@@ -133,6 +187,7 @@ class NodeConversation:
         self._messages: list[Message] = []
         self._next_seq: int = 0
         self._meta_persisted: bool = False
+        self._last_api_input_tokens: int | None = None
 
     # --- Properties --------------------------------------------------------
 
@@ -205,14 +260,78 @@ class NodeConversation:
     # --- Query -------------------------------------------------------------
 
     def to_llm_messages(self) -> list[dict[str, Any]]:
-        """Return messages as OpenAI-format dicts (system prompt excluded)."""
-        return [m.to_llm_dict() for m in self._messages]
+        """Return messages as OpenAI-format dicts (system prompt excluded).
+
+        Automatically repairs orphaned tool_use blocks (assistant messages
+        with tool_calls that lack corresponding tool-result messages).  This
+        can happen when a loop is cancelled mid-tool-execution.
+        """
+        msgs = [m.to_llm_dict() for m in self._messages]
+        return self._repair_orphaned_tool_calls(msgs)
+
+    @staticmethod
+    def _repair_orphaned_tool_calls(
+        msgs: list[dict[str, Any]],
+    ) -> list[dict[str, Any]]:
+        """Ensure every tool_call has a matching tool-result message."""
+        repaired: list[dict[str, Any]] = []
+        for i, m in enumerate(msgs):
+            repaired.append(m)
+            tool_calls = m.get("tool_calls")
+            if m.get("role") != "assistant" or not tool_calls:
+                continue
+            # Collect IDs of tool results that follow this assistant message
+            answered: set[str] = set()
+            for j in range(i + 1, len(msgs)):
+                if msgs[j].get("role") == "tool":
+                    tid = msgs[j].get("tool_call_id")
+                    if tid:
+                        answered.add(tid)
+                else:
+                    break  # stop at first non-tool message
+            # Patch any missing results
+            for tc in tool_calls:
+                tc_id = tc.get("id")
+                if tc_id and tc_id not in answered:
+                    repaired.append(
+                        {
+                            "role": "tool",
+                            "tool_call_id": tc_id,
+                            "content": "ERROR: Tool execution was interrupted.",
+                        }
+                    )
+        return repaired
 
     def estimate_tokens(self) -> int:
-        """Rough token estimate: total characters / 4."""
+        """Best available token estimate.
+
+        Uses actual API input token count when available (set via
+        :meth:`update_token_count`), otherwise falls back to the rough
+        ``total_chars / 4`` heuristic.
+        """
+        if self._last_api_input_tokens is not None:
+            return self._last_api_input_tokens
         total_chars = sum(len(m.content) for m in self._messages)
         return total_chars // 4
 
+    def update_token_count(self, actual_input_tokens: int) -> None:
+        """Store actual API input token count for more accurate compaction.
+
+        Called by EventLoopNode after each LLM call with the ``input_tokens``
+        value from the API response.  This value includes system prompt and
+        tool definitions, so it may be higher than a message-only estimate.
+        """
+        self._last_api_input_tokens = actual_input_tokens
+
+    def usage_ratio(self) -> float:
+        """Current token usage as a fraction of *max_history_tokens*.
+
+        Returns 0.0 when ``max_history_tokens`` is zero (unlimited).
+        """
+        if self._max_history_tokens <= 0:
+            return 0.0
+        return self.estimate_tokens() / self._max_history_tokens
+
     def needs_compaction(self) -> bool:
         return self.estimate_tokens() >= self._max_history_tokens * self._compaction_threshold
 
@@ -244,42 +363,89 @@ class NodeConversation:
 
     def _try_extract_key(self, content: str, key: str) -> str | None:
         """Try 4 strategies to extract a key's value from message content."""
-        from framework.graph.node import find_json_object
-
-        # 1. Whole message is JSON
-        try:
-            parsed = json.loads(content)
-            if isinstance(parsed, dict) and key in parsed:
-                val = parsed[key]
-                return json.dumps(val) if not isinstance(val, str) else val
-        except (json.JSONDecodeError, TypeError):
-            pass
-
-        # 2. Embedded JSON via find_json_object
-        json_str = find_json_object(content)
-        if json_str:
-            try:
-                parsed = json.loads(json_str)
-                if isinstance(parsed, dict) and key in parsed:
-                    val = parsed[key]
-                    return json.dumps(val) if not isinstance(val, str) else val
-            except (json.JSONDecodeError, TypeError):
-                pass
-
-        # 3. Colon format: key: value
-        match = re.search(rf"\b{re.escape(key)}\s*:\s*(.+)", content)
-        if match:
-            return match.group(1).strip()
-
-        # 4. Equals format: key = value
-        match = re.search(rf"\b{re.escape(key)}\s*=\s*(.+)", content)
-        if match:
-            return match.group(1).strip()
-
-        return None
+        return _try_extract_key(content, key)
 
     # --- Lifecycle ---------------------------------------------------------
 
+    async def prune_old_tool_results(
+        self,
+        protect_tokens: int = 5000,
+        min_prune_tokens: int = 2000,
+    ) -> int:
+        """Replace old tool result content with compact placeholders.
+
+        Walks backward through messages. Recent tool results (within
+        *protect_tokens*) are kept intact. Older tool results have their
+        content replaced with a ~100-char placeholder that preserves the
+        spillover filename reference (if any). Message structure (role,
+        seq, tool_use_id) stays valid for the LLM API.
+
+        Error tool results are never pruned — they prevent re-calling
+        failing tools.
+
+        Returns the number of messages pruned (0 if nothing was pruned).
+        """
+        if not self._messages:
+            return 0
+
+        # Phase 1: Walk backward, classify tool results as protected vs pruneable
+        protected_tokens = 0
+        pruneable: list[int] = []  # indices into self._messages
+        pruneable_tokens = 0
+
+        for i in range(len(self._messages) - 1, -1, -1):
+            msg = self._messages[i]
+            if msg.role != "tool":
+                continue
+            if msg.is_error:
+                continue  # never prune errors
+            if msg.content.startswith("[Pruned tool result"):
+                continue  # already pruned
+
+            est = len(msg.content) // 4
+            if protected_tokens < protect_tokens:
+                protected_tokens += est
+            else:
+                pruneable.append(i)
+                pruneable_tokens += est
+
+        # Phase 2: Only prune if enough to be worthwhile
+        if pruneable_tokens < min_prune_tokens:
+            return 0
+
+        # Phase 3: Replace content with compact placeholder
+        count = 0
+        for i in pruneable:
+            msg = self._messages[i]
+            orig_len = len(msg.content)
+            spillover = _extract_spillover_filename(msg.content)
+
+            if spillover:
+                placeholder = (
+                    f"[Pruned tool result: {orig_len} chars. "
+                    f"Full data in '{spillover}'. "
+                    f"Use load_data('{spillover}') to retrieve.]"
+                )
+            else:
+                placeholder = f"[Pruned tool result: {orig_len} chars cleared from context.]"
+
+            self._messages[i] = Message(
+                seq=msg.seq,
+                role=msg.role,
+                content=placeholder,
+                tool_use_id=msg.tool_use_id,
+                tool_calls=msg.tool_calls,
+                is_error=msg.is_error,
+            )
+            count += 1
+
+            if self._store:
+                await self._store.write_part(msg.seq, self._messages[i].to_storage_dict())
+
+        # Reset token estimate — content lengths changed
+        self._last_api_input_tokens = None
+        return count
+
     async def compact(self, summary: str, keep_recent: int = 2) -> None:
         """Replace old messages with a summary, optionally keeping recent ones.
 
@@ -294,12 +460,18 @@ class NodeConversation:
         # Clamp: must discard at least 1 message
         keep_recent = max(0, min(keep_recent, len(self._messages) - 1))
 
-        if keep_recent > 0:
-            old_messages = self._messages[:-keep_recent]
-            recent_messages = self._messages[-keep_recent:]
-        else:
-            old_messages = self._messages
-            recent_messages = []
+        total = len(self._messages)
+        split = total - keep_recent if keep_recent > 0 else total
+
+        # Advance split past orphaned tool results at the boundary.
+        # Tool-role messages reference a tool_use from the preceding
+        # assistant message; if that assistant message falls into the
+        # compacted (old) portion the tool_result becomes invalid.
+        while split < total and self._messages[split].role == "tool":
+            split += 1
+
+        old_messages = list(self._messages[:split])
+        recent_messages = list(self._messages[split:])
 
         # Extract protected values from messages being discarded
         if self._output_keys:
@@ -330,6 +502,7 @@ class NodeConversation:
             await self._store.write_cursor({"next_seq": self._next_seq})
 
         self._messages = [summary_msg] + recent_messages
+        self._last_api_input_tokens = None  # reset; next LLM call will recalibrate
 
     async def clear(self) -> None:
         """Remove all messages, keep system prompt, preserve ``_next_seq``."""
@@ -337,6 +510,7 @@ class NodeConversation:
             await self._store.delete_parts_before(self._next_seq)
             await self._store.write_cursor({"next_seq": self._next_seq})
         self._messages.clear()
+        self._last_api_input_tokens = None
 
     def export_summary(self) -> str:
         """Structured summary with [STATS], [CONFIG], [RECENT_MESSAGES] sections."""

core/framework/graph/edge.py

@@ -21,15 +21,17 @@ allowing the LLM to evaluate whether proceeding along an edge makes sense
 given the current goal, context, and execution state.
 """
 
-from enum import Enum
+from enum import StrEnum
 from typing import Any
 
-from pydantic import BaseModel, Field
+from pydantic import BaseModel, Field, model_validator
 
 from framework.graph.safe_eval import safe_eval
 
+DEFAULT_MAX_TOKENS = 8192
 
-class EdgeCondition(str, Enum):
+
+class EdgeCondition(StrEnum):
     """When an edge should be traversed."""
 
     ALWAYS = "always"  # Always after source completes
@@ -156,6 +158,10 @@ class EdgeSpec(BaseModel):
         memory: dict[str, Any],
     ) -> bool:
         """Evaluate a conditional expression."""
+        import logging
+
+        logger = logging.getLogger(__name__)
+
         if not self.condition_expr:
             return True
 
@@ -172,12 +178,24 @@ class EdgeSpec(BaseModel):
 
         try:
             # Safe evaluation using AST-based whitelist
-            return bool(safe_eval(self.condition_expr, context))
+            result = bool(safe_eval(self.condition_expr, context))
+            # Log the evaluation for visibility
+            # Extract the variable names used in the expression for debugging
+            expr_vars = {
+                k: repr(context[k])
+                for k in context
+                if k not in ("output", "memory", "result", "true", "false")
+                and k in self.condition_expr
+            }
+            logger.info(
+                "  Edge %s: condition '%s' → %s  (vars: %s)",
+                self.id,
+                self.condition_expr,
+                result,
+                expr_vars or "none matched",
+            )
+            return result
         except Exception as e:
-            # Log the error for debugging
-            import logging
-
-            logger = logging.getLogger(__name__)
             logger.warning(f"      ⚠ Condition evaluation failed: {self.condition_expr}")
             logger.warning(f"         Error: {e}")
             logger.warning(f"         Available context keys: {list(context.keys())}")
@@ -408,7 +426,7 @@ class GraphSpec(BaseModel):
 
     # Default LLM settings
     default_model: str = "claude-haiku-4-5-20251001"
-    max_tokens: int = 1024
+    max_tokens: int = Field(default=None)  # resolved by _resolve_max_tokens validator
 
     # Cleanup LLM for JSON extraction fallback (fast/cheap model preferred)
     # If not set, uses CEREBRAS_API_KEY -> cerebras/llama-3.3-70b or
@@ -419,12 +437,28 @@ class GraphSpec(BaseModel):
     max_steps: int = Field(default=100, description="Maximum node executions before timeout")
     max_retries_per_node: int = 3
 
+    # EventLoopNode configuration (from configure_loop)
+    loop_config: dict[str, Any] = Field(
+        default_factory=dict,
+        description="EventLoopNode configuration (max_iterations, max_tool_calls_per_turn, etc.)",
+    )
+
     # Metadata
     description: str = ""
     created_by: str = ""  # "human" or "builder_agent"
 
     model_config = {"extra": "allow"}
 
+    @model_validator(mode="before")
+    @classmethod
+    def _resolve_max_tokens(cls, values: Any) -> Any:
+        """Resolve max_tokens from the global config store when not explicitly set."""
+        if isinstance(values, dict) and values.get("max_tokens") is None:
+            from framework.config import get_max_tokens
+
+            values["max_tokens"] = get_max_tokens()
+        return values
+
     def get_node(self, node_id: str) -> Any | None:
         """Get a node by ID."""
         for node in self.nodes:
@@ -608,4 +642,40 @@ class GraphSpec(BaseModel):
                     continue
                 errors.append(f"Node '{node.id}' is unreachable from entry")
 
+        # Client-facing fan-out validation
+        fan_outs = self.detect_fan_out_nodes()
+        for source_id, targets in fan_outs.items():
+            client_facing_targets = [
+                t
+                for t in targets
+                if self.get_node(t) and getattr(self.get_node(t), "client_facing", False)
+            ]
+            if len(client_facing_targets) > 1:
+                errors.append(
+                    f"Fan-out from '{source_id}' has multiple client-facing nodes: "
+                    f"{client_facing_targets}. Only one branch may be client-facing."
+                )
+
+        # Output key overlap on parallel event_loop nodes
+        for source_id, targets in fan_outs.items():
+            event_loop_targets = [
+                t
+                for t in targets
+                if self.get_node(t) and getattr(self.get_node(t), "node_type", "") == "event_loop"
+            ]
+            if len(event_loop_targets) > 1:
+                seen_keys: dict[str, str] = {}
+                for node_id in event_loop_targets:
+                    node = self.get_node(node_id)
+                    for key in getattr(node, "output_keys", []):
+                        if key in seen_keys:
+                            errors.append(
+                                f"Fan-out from '{source_id}': event_loop nodes "
+                                f"'{seen_keys[key]}' and '{node_id}' both write to "
+                                f"output_key '{key}'. Parallel event_loop nodes must "
+                                f"have disjoint output_keys to prevent last-wins data loss."
+                            )
+                        else:
+                            seen_keys[key] = node_id
+
         return errors

core/framework/graph/goal.py

@@ -12,13 +12,13 @@ Goals are:
 """
 
 from datetime import datetime
-from enum import Enum
+from enum import StrEnum
 from typing import Any
 
 from pydantic import BaseModel, Field
 
 
-class GoalStatus(str, Enum):
+class GoalStatus(StrEnum):
     """Lifecycle status of a goal."""
 
     DRAFT = "draft"  # Being defined

core/framework/graph/hitl.py

@@ -6,11 +6,11 @@ where agents need to gather input from humans.
 """
 
 from dataclasses import dataclass, field
-from enum import Enum
+from enum import StrEnum
 from typing import Any
 
 
-class HITLInputType(str, Enum):
+class HITLInputType(StrEnum):
     """Type of input expected from human."""
 
     FREE_TEXT = "free_text"  # Open-ended text response

core/framework/graph/node.py

@@ -16,10 +16,12 @@ Protocol:
 """
 
 import asyncio
+import inspect
 import logging
 from abc import ABC, abstractmethod
 from collections.abc import Callable
 from dataclasses import dataclass, field
+from datetime import UTC
 from typing import Any
 
 from pydantic import BaseModel, Field
@@ -153,7 +155,10 @@ class NodeSpec(BaseModel):
     # Node behavior type
     node_type: str = Field(
         default="llm_tool_use",
-        description="Type: 'llm_tool_use', 'llm_generate', 'function', 'router', 'human_input'",
+        description=(
+            "Type: 'event_loop', 'function', 'router', 'human_input'. "
+            "Deprecated: 'llm_tool_use', 'llm_generate' (use 'event_loop' instead)."
+        ),
     )
 
     # Data flow
@@ -205,6 +210,15 @@ class NodeSpec(BaseModel):
     max_retries: int = Field(default=3)
     retry_on: list[str] = Field(default_factory=list, description="Error types to retry on")
 
+    # Visit limits (for feedback/callback edges)
+    max_node_visits: int = Field(
+        default=1,
+        description=(
+            "Max times this node executes in one graph run. "
+            "Set >1 for feedback loops. 0 = unlimited (max_steps guards)."
+        ),
+    )
+
     # Pydantic model for output validation
     output_model: type[BaseModel] | None = Field(
         default=None,
@@ -218,6 +232,12 @@ class NodeSpec(BaseModel):
         description="Maximum retries when Pydantic validation fails (with feedback to LLM)",
     )
 
+    # Client-facing behavior
+    client_facing: bool = Field(
+        default=False,
+        description="If True, this node streams output to the end user and can request input.",
+    )
+
     model_config = {"extra": "allow", "arbitrary_types_allowed": True}
 
 
@@ -457,6 +477,12 @@ class NodeContext:
     attempt: int = 1
     max_attempts: int = 3
 
+    # Runtime logging (optional)
+    runtime_logger: Any = None  # RuntimeLogger | None — uses Any to avoid import
+
+    # Pause control (optional) - asyncio.Event for pause requests
+    pause_event: Any = None  # asyncio.Event | None
+
 
 @dataclass
 class NodeResult:
@@ -834,6 +860,8 @@ Keep the same JSON structure but with shorter content values.
         )
 
         start = time.time()
+        _step_index = 0
+        _captured_tool_calls: list[dict] = []
 
         try:
             # Build messages
@@ -873,6 +901,16 @@ Keep the same JSON structure but with shorter content values.
                     if len(str(result.content)) > 150:
                         result_str += "..."
                     logger.info(f"         ✓ Tool result: {result_str}")
+                    # Capture for runtime logging
+                    _captured_tool_calls.append(
+                        {
+                            "tool_use_id": tool_use.id,
+                            "tool_name": tool_use.name,
+                            "tool_input": tool_use.input,
+                            "content": result.content,
+                            "is_error": result.is_error,
+                        }
+                    )
                     return result
 
                 response = ctx.llm.complete_with_tools(
@@ -1052,6 +1090,29 @@ Keep the same JSON structure but with shorter content values.
                                     f"Pydantic validation failed after "
                                     f"{max_validation_retries} retries: {err}"
                                 )
+                                if ctx.runtime_logger:
+                                    ctx.runtime_logger.log_step(
+                                        node_id=ctx.node_id,
+                                        node_type=ctx.node_spec.node_type,
+                                        step_index=_step_index,
+                                        llm_text=response.content,
+                                        tool_calls=_captured_tool_calls,
+                                        input_tokens=total_input_tokens,
+                                        output_tokens=total_output_tokens,
+                                        latency_ms=latency_ms,
+                                    )
+                                    ctx.runtime_logger.log_node_complete(
+                                        node_id=ctx.node_id,
+                                        node_name=ctx.node_spec.name,
+                                        node_type=ctx.node_spec.node_type,
+                                        success=False,
+                                        error=error_msg,
+                                        total_steps=_step_index + 1,
+                                        tokens_used=total_input_tokens + total_output_tokens,
+                                        input_tokens=total_input_tokens,
+                                        output_tokens=total_output_tokens,
+                                        latency_ms=latency_ms,
+                                    )
                                 return NodeResult(
                                     success=False,
                                     error=error_msg,
@@ -1073,7 +1134,7 @@ Keep the same JSON structure but with shorter content values.
                 decision_id=decision_id,
                 success=True,
                 result=response.content,
-                tokens_used=response.input_tokens + response.output_tokens,
+                tokens_used=total_input_tokens + total_output_tokens,
                 latency_ms=latency_ms,
             )
 
@@ -1141,14 +1202,38 @@ Keep the same JSON structure but with shorter content values.
                     )
 
                     # Return failure instead of writing garbage to all keys
+                    _extraction_error = (
+                        f"Output extraction failed: {e}. LLM returned non-JSON response. "
+                        f"Expected keys: {ctx.node_spec.output_keys}"
+                    )
+                    if ctx.runtime_logger:
+                        ctx.runtime_logger.log_step(
+                            node_id=ctx.node_id,
+                            node_type=ctx.node_spec.node_type,
+                            step_index=_step_index,
+                            llm_text=response.content,
+                            tool_calls=_captured_tool_calls,
+                            input_tokens=response.input_tokens,
+                            output_tokens=response.output_tokens,
+                            latency_ms=latency_ms,
+                        )
+                        ctx.runtime_logger.log_node_complete(
+                            node_id=ctx.node_id,
+                            node_name=ctx.node_spec.name,
+                            node_type=ctx.node_spec.node_type,
+                            success=False,
+                            error=_extraction_error,
+                            total_steps=_step_index + 1,
+                            tokens_used=response.input_tokens + response.output_tokens,
+                            input_tokens=response.input_tokens,
+                            output_tokens=response.output_tokens,
+                            latency_ms=latency_ms,
+                        )
                     return NodeResult(
                         success=False,
-                        error=(
-                            f"Output extraction failed: {e}. LLM returned non-JSON response. "
-                            f"Expected keys: {ctx.node_spec.output_keys}"
-                        ),
+                        error=_extraction_error,
                         output={},
-                        tokens_used=response.input_tokens + response.output_tokens,
+                        tokens_used=total_input_tokens + total_output_tokens,
                         latency_ms=latency_ms,
                     )
                     # JSON extraction failed completely - still strip code blocks
@@ -1164,10 +1249,33 @@ Keep the same JSON structure but with shorter content values.
                     ctx.memory.write(key, stripped_content, validate=False)
                     output[key] = stripped_content
 
+            if ctx.runtime_logger:
+                ctx.runtime_logger.log_step(
+                    node_id=ctx.node_id,
+                    node_type=ctx.node_spec.node_type,
+                    step_index=_step_index,
+                    llm_text=response.content,
+                    tool_calls=_captured_tool_calls,
+                    input_tokens=response.input_tokens,
+                    output_tokens=response.output_tokens,
+                    latency_ms=latency_ms,
+                )
+                ctx.runtime_logger.log_node_complete(
+                    node_id=ctx.node_id,
+                    node_name=ctx.node_spec.name,
+                    node_type=ctx.node_spec.node_type,
+                    success=True,
+                    total_steps=_step_index + 1,
+                    tokens_used=response.input_tokens + response.output_tokens,
+                    input_tokens=response.input_tokens,
+                    output_tokens=response.output_tokens,
+                    latency_ms=latency_ms,
+                )
+
             return NodeResult(
                 success=True,
                 output=output,
-                tokens_used=response.input_tokens + response.output_tokens,
+                tokens_used=total_input_tokens + total_output_tokens,
                 latency_ms=latency_ms,
             )
 
@@ -1179,6 +1287,15 @@ Keep the same JSON structure but with shorter content values.
                 error=str(e),
                 latency_ms=latency_ms,
             )
+            if ctx.runtime_logger:
+                ctx.runtime_logger.log_node_complete(
+                    node_id=ctx.node_id,
+                    node_name=ctx.node_spec.name,
+                    node_type=ctx.node_spec.node_type,
+                    success=False,
+                    error=str(e),
+                    latency_ms=latency_ms,
+                )
             return NodeResult(success=False, error=str(e), latency_ms=latency_ms)
 
     def _parse_output(self, content: str, node_spec: NodeSpec) -> dict[str, Any]:
@@ -1514,6 +1631,8 @@ Do NOT fabricate data or return empty objects."""
 
     def _build_system_prompt(self, ctx: NodeContext) -> str:
         """Build the system prompt."""
+        from datetime import datetime
+
         parts = []
 
         if ctx.node_spec.system_prompt:
@@ -1536,6 +1655,15 @@ Do NOT fabricate data or return empty objects."""
 
             parts.append(prompt)
 
+        # Inject current datetime so LLM knows "now"
+        utc_dt = datetime.now(UTC)
+        local_dt = datetime.now().astimezone()
+        local_tz_name = local_dt.tzname() or "Unknown"
+        parts.append("\n## Runtime Context")
+        parts.append(f"- Current Date/Time (UTC): {utc_dt.isoformat()}")
+        parts.append(f"- Local Timezone: {local_tz_name}")
+        parts.append(f"- Current Date/Time (Local): {local_dt.isoformat()}")
+
         if ctx.goal_context:
             parts.append("\n# Goal Context")
             parts.append(ctx.goal_context)
@@ -1560,6 +1688,9 @@ class RouterNode(NodeProtocol):
 
     async def execute(self, ctx: NodeContext) -> NodeResult:
         """Execute routing logic."""
+        import time as _time
+
+        start = _time.time()
         ctx.runtime.set_node(ctx.node_id)
 
         # Build options from routes
@@ -1604,10 +1735,30 @@ class RouterNode(NodeProtocol):
             summary=f"Routing to {chosen_route[1]}",
         )
 
+        latency_ms = int((_time.time() - start) * 1000)
+
+        if ctx.runtime_logger:
+            ctx.runtime_logger.log_step(
+                node_id=ctx.node_id,
+                node_type="router",
+                step_index=0,
+                llm_text=f"Route: {chosen_route[0]} -> {chosen_route[1]}",
+                latency_ms=latency_ms,
+            )
+            ctx.runtime_logger.log_node_complete(
+                node_id=ctx.node_id,
+                node_name=ctx.node_spec.name,
+                node_type="router",
+                success=True,
+                total_steps=1,
+                latency_ms=latency_ms,
+            )
+
         return NodeResult(
             success=True,
             next_node=chosen_route[1],
             route_reason=f"Chose route: {chosen_route[0]}",
+            latency_ms=latency_ms,
         )
 
     async def _llm_route(
@@ -1737,8 +1888,19 @@ class FunctionNode(NodeProtocol):
         start = time.time()
 
         try:
-            # Call the function
-            result = self.func(**ctx.input_data)
+            # Filter input_data to only declared input_keys to prevent
+            # leaking extra memory keys from upstream nodes.
+            if ctx.node_spec.input_keys:
+                filtered = {
+                    k: v for k, v in ctx.input_data.items() if k in ctx.node_spec.input_keys
+                }
+            else:
+                filtered = ctx.input_data
+
+            # Call the function (supports both sync and async)
+            result = self.func(**filtered)
+            if inspect.isawaitable(result):
+                result = await result
 
             latency_ms = int((time.time() - start) * 1000)
 
@@ -1758,6 +1920,22 @@ class FunctionNode(NodeProtocol):
             else:
                 output = {"result": result}
 
+            if ctx.runtime_logger:
+                ctx.runtime_logger.log_step(
+                    node_id=ctx.node_id,
+                    node_type="function",
+                    step_index=0,
+                    latency_ms=latency_ms,
+                )
+                ctx.runtime_logger.log_node_complete(
+                    node_id=ctx.node_id,
+                    node_name=ctx.node_spec.name,
+                    node_type="function",
+                    success=True,
+                    total_steps=1,
+                    latency_ms=latency_ms,
+                )
+
             return NodeResult(success=True, output=output, latency_ms=latency_ms)
 
         except Exception as e:
@@ -1768,4 +1946,22 @@ class FunctionNode(NodeProtocol):
                 error=str(e),
                 latency_ms=latency_ms,
             )
+
+            if ctx.runtime_logger:
+                ctx.runtime_logger.log_step(
+                    node_id=ctx.node_id,
+                    node_type="function",
+                    step_index=0,
+                    latency_ms=latency_ms,
+                )
+                ctx.runtime_logger.log_node_complete(
+                    node_id=ctx.node_id,
+                    node_name=ctx.node_spec.name,
+                    node_type="function",
+                    success=False,
+                    error=str(e),
+                    total_steps=1,
+                    latency_ms=latency_ms,
+                )
+
             return NodeResult(success=False, error=str(e), latency_ms=latency_ms)

core/framework/graph/output_cleaner.py

@@ -144,8 +144,11 @@ class OutputCleaner:
         errors = []
         warnings = []
 
-        # Check 1: Required input keys present
+        # Check 1: Required input keys present (skip nullable keys)
+        nullable = set(getattr(target_node_spec, "nullable_output_keys", None) or [])
         for key in target_node_spec.input_keys:
+            if key in nullable:
+                continue
             if key not in output:
                 errors.append(f"Missing required key: '{key}'")
                 continue

core/framework/graph/plan.py

@@ -11,13 +11,13 @@ The Plan is the contract between the external planner and the executor:
 """
 
 from datetime import datetime
-from enum import Enum
+from enum import StrEnum
 from typing import Any
 
 from pydantic import BaseModel, Field
 
 
-class ActionType(str, Enum):
+class ActionType(StrEnum):
     """Types of actions a PlanStep can perform."""
 
     LLM_CALL = "llm_call"  # Call LLM for generation
@@ -27,7 +27,7 @@ class ActionType(str, Enum):
     CODE_EXECUTION = "code_execution"  # Execute dynamic code (sandboxed)
 
 
-class StepStatus(str, Enum):
+class StepStatus(StrEnum):
     """Status of a plan step."""
 
     PENDING = "pending"
@@ -56,7 +56,7 @@ class StepStatus(str, Enum):
         return self == StepStatus.COMPLETED
 
 
-class ApprovalDecision(str, Enum):
+class ApprovalDecision(StrEnum):
     """Human decision on a step requiring approval."""
 
     APPROVE = "approve"  # Execute as planned
@@ -91,7 +91,7 @@ class ApprovalResult(BaseModel):
     model_config = {"extra": "allow"}
 
 
-class JudgmentAction(str, Enum):
+class JudgmentAction(StrEnum):
     """Actions the judge can take after evaluating a step."""
 
     ACCEPT = "accept"  # Step completed successfully, continue
@@ -423,7 +423,7 @@ class Plan(BaseModel):
         }
 
 
-class ExecutionStatus(str, Enum):
+class ExecutionStatus(StrEnum):
     """Status of plan execution."""
 
     COMPLETED = "completed"

core/framework/graph/validator.py

@@ -126,14 +126,16 @@ class OutputValidator:
 
         for key in expected_keys:
             if key not in output:
-                errors.append(f"Missing required output key: '{key}'")
+                if key not in nullable_keys:
+                    errors.append(f"Missing required output key: '{key}'")
             elif not allow_empty:
                 value = output[key]
                 if value is None:
                     if key not in nullable_keys:
                         errors.append(f"Output key '{key}' is None")
                 elif isinstance(value, str) and len(value.strip()) == 0:
-                    errors.append(f"Output key '{key}' is empty string")
+                    if key not in nullable_keys:
+                        errors.append(f"Output key '{key}' is empty string")
 
         return ValidationResult(success=len(errors) == 0, errors=errors)
 
@@ -205,7 +207,7 @@ class OutputValidator:
     def validate_no_hallucination(
         self,
         output: dict[str, Any],
-        max_length: int = 10000,
+        max_length: int = 50000,
     ) -> ValidationResult:
         """
         Check for signs of LLM hallucination in output values.

core/framework/llm/__init__.py

@@ -1,8 +1,31 @@
 """LLM provider abstraction."""
 
 from framework.llm.provider import LLMProvider, LLMResponse
+from framework.llm.stream_events import (
+    FinishEvent,
+    ReasoningDeltaEvent,
+    ReasoningStartEvent,
+    StreamErrorEvent,
+    StreamEvent,
+    TextDeltaEvent,
+    TextEndEvent,
+    ToolCallEvent,
+    ToolResultEvent,
+)
 
-__all__ = ["LLMProvider", "LLMResponse"]
+__all__ = [
+    "LLMProvider",
+    "LLMResponse",
+    "StreamEvent",
+    "TextDeltaEvent",
+    "TextEndEvent",
+    "ToolCallEvent",
+    "ToolResultEvent",
+    "ReasoningStartEvent",
+    "ReasoningDeltaEvent",
+    "FinishEvent",
+    "StreamErrorEvent",
+]
 
 try:
     from framework.llm.anthropic import AnthropicProvider  # noqa: F401

core/framework/llm/anthropic.py

@@ -18,7 +18,7 @@ def _get_api_key_from_credential_store() -> str | None:
     try:
         from aden_tools.credentials import CredentialStoreAdapter
 
-        creds = CredentialStoreAdapter.with_env_storage()
+        creds = CredentialStoreAdapter.default()
         if creds.is_available("anthropic"):
             return creds.get("anthropic")
     except ImportError:

core/framework/llm/litellm.py

@@ -7,10 +7,11 @@ Groq, and local models.
 See: https://docs.litellm.ai/docs/providers
 """
 
+import asyncio
 import json
 import logging
 import time
-from collections.abc import Callable
+from collections.abc import AsyncIterator, Callable
 from datetime import datetime
 from pathlib import Path
 from typing import Any
@@ -23,6 +24,7 @@ except ImportError:
     RateLimitError = Exception  # type: ignore[assignment, misc]
 
 from framework.llm.provider import LLMProvider, LLMResponse, Tool, ToolResult, ToolUse
+from framework.llm.stream_events import StreamEvent
 
 logger = logging.getLogger(__name__)
 
@@ -145,7 +147,7 @@ class LiteLLMProvider(LLMProvider):
 
         if litellm is None:
             raise ImportError(
-                "LiteLLM is not installed. Please install it with: pip install litellm"
+                "LiteLLM is not installed. Please install it with: uv pip install litellm"
             )
 
     def _completion_with_rate_limit_retry(self, **kwargs: Any) -> Any:
@@ -161,11 +163,24 @@ class LiteLLMProvider(LLMProvider):
                 content = response.choices[0].message.content if response.choices else None
                 has_tool_calls = bool(response.choices and response.choices[0].message.tool_calls)
                 if not content and not has_tool_calls:
+                    # If the conversation ends with an assistant message,
+                    # an empty response is expected — don't retry.
+                    messages = kwargs.get("messages", [])
+                    last_role = next(
+                        (m["role"] for m in reversed(messages) if m.get("role") != "system"),
+                        None,
+                    )
+                    if last_role == "assistant":
+                        logger.debug(
+                            "[retry] Empty response after assistant message — "
+                            "expected, not retrying."
+                        )
+                        return response
+
                     finish_reason = (
                         response.choices[0].finish_reason if response.choices else "unknown"
                     )
                     # Dump full request to file for debugging
-                    messages = kwargs.get("messages", [])
                     token_count, token_method = _estimate_tokens(model, messages)
                     dump_path = _dump_failed_request(
                         model=model,
@@ -378,11 +393,18 @@ class LiteLLMProvider(LLMProvider):
 
             # Execute tools and add results.
             for tool_call in message.tool_calls:
-                # Parse arguments
                 try:
                     args = json.loads(tool_call.function.arguments)
                 except json.JSONDecodeError:
-                    args = {}
+                    # Surface error to LLM and skip tool execution
+                    current_messages.append(
+                        {
+                            "role": "tool",
+                            "tool_call_id": tool_call.id,
+                            "content": "Invalid JSON arguments provided to tool.",
+                        }
+                    )
+                    continue
 
                 tool_use = ToolUse(
                     id=tool_call.id,
@@ -425,3 +447,189 @@ class LiteLLMProvider(LLMProvider):
                 },
             },
         }
+
+    async def stream(
+        self,
+        messages: list[dict[str, Any]],
+        system: str = "",
+        tools: list[Tool] | None = None,
+        max_tokens: int = 4096,
+    ) -> AsyncIterator[StreamEvent]:
+        """Stream a completion via litellm.acompletion(stream=True).
+
+        Yields StreamEvent objects as chunks arrive from the provider.
+        Tool call arguments are accumulated across chunks and yielded as
+        a single ToolCallEvent with fully parsed JSON when complete.
+
+        Empty responses (e.g. Gemini stealth rate-limits that return 200
+        with no content) are retried with exponential backoff, mirroring
+        the retry behaviour of ``_completion_with_rate_limit_retry``.
+        """
+        from framework.llm.stream_events import (
+            FinishEvent,
+            StreamErrorEvent,
+            TextDeltaEvent,
+            TextEndEvent,
+            ToolCallEvent,
+        )
+
+        full_messages: list[dict[str, Any]] = []
+        if system:
+            full_messages.append({"role": "system", "content": system})
+        full_messages.extend(messages)
+
+        kwargs: dict[str, Any] = {
+            "model": self.model,
+            "messages": full_messages,
+            "max_tokens": max_tokens,
+            "stream": True,
+            "stream_options": {"include_usage": True},
+            **self.extra_kwargs,
+        }
+        if self.api_key:
+            kwargs["api_key"] = self.api_key
+        if self.api_base:
+            kwargs["api_base"] = self.api_base
+        if tools:
+            kwargs["tools"] = [self._tool_to_openai_format(t) for t in tools]
+
+        for attempt in range(RATE_LIMIT_MAX_RETRIES + 1):
+            # Post-stream events (ToolCall, TextEnd, Finish) are buffered
+            # because they depend on the full stream.  TextDeltaEvents are
+            # yielded immediately so callers see tokens in real time.
+            tail_events: list[StreamEvent] = []
+            accumulated_text = ""
+            tool_calls_acc: dict[int, dict[str, str]] = {}
+            input_tokens = 0
+            output_tokens = 0
+
+            try:
+                response = await litellm.acompletion(**kwargs)  # type: ignore[union-attr]
+
+                async for chunk in response:
+                    choice = chunk.choices[0] if chunk.choices else None
+                    if not choice:
+                        continue
+
+                    delta = choice.delta
+
+                    # --- Text content — yield immediately for real-time streaming ---
+                    if delta and delta.content:
+                        accumulated_text += delta.content
+                        yield TextDeltaEvent(
+                            content=delta.content,
+                            snapshot=accumulated_text,
+                        )
+
+                    # --- Tool calls (accumulate across chunks) ---
+                    if delta and delta.tool_calls:
+                        for tc in delta.tool_calls:
+                            idx = tc.index if hasattr(tc, "index") and tc.index is not None else 0
+                            if idx not in tool_calls_acc:
+                                tool_calls_acc[idx] = {"id": "", "name": "", "arguments": ""}
+                            if tc.id:
+                                tool_calls_acc[idx]["id"] = tc.id
+                            if tc.function:
+                                if tc.function.name:
+                                    tool_calls_acc[idx]["name"] = tc.function.name
+                                if tc.function.arguments:
+                                    tool_calls_acc[idx]["arguments"] += tc.function.arguments
+
+                    # --- Finish ---
+                    if choice.finish_reason:
+                        for _idx, tc_data in sorted(tool_calls_acc.items()):
+                            try:
+                                parsed_args = json.loads(tc_data["arguments"])
+                            except (json.JSONDecodeError, KeyError):
+                                parsed_args = {"_raw": tc_data.get("arguments", "")}
+                            tail_events.append(
+                                ToolCallEvent(
+                                    tool_use_id=tc_data["id"],
+                                    tool_name=tc_data["name"],
+                                    tool_input=parsed_args,
+                                )
+                            )
+
+                        if accumulated_text:
+                            tail_events.append(TextEndEvent(full_text=accumulated_text))
+
+                        usage = getattr(chunk, "usage", None)
+                        if usage:
+                            input_tokens = getattr(usage, "prompt_tokens", 0) or 0
+                            output_tokens = getattr(usage, "completion_tokens", 0) or 0
+
+                        tail_events.append(
+                            FinishEvent(
+                                stop_reason=choice.finish_reason,
+                                input_tokens=input_tokens,
+                                output_tokens=output_tokens,
+                                model=self.model,
+                            )
+                        )
+
+                # Check whether the stream produced any real content.
+                # (If text deltas were yielded above, has_content is True
+                # and we skip the retry path — nothing was yielded in vain.)
+                has_content = accumulated_text or tool_calls_acc
+                if not has_content and attempt < RATE_LIMIT_MAX_RETRIES:
+                    # If the conversation ends with an assistant or tool
+                    # message, an empty stream is expected — the LLM has
+                    # nothing new to say.  Don't burn retries on this;
+                    # let the caller (EventLoopNode) decide what to do.
+                    # Typical case: client_facing node where the LLM set
+                    # all outputs via set_output tool calls, and the tool
+                    # results are the last messages.
+                    last_role = next(
+                        (m["role"] for m in reversed(full_messages) if m.get("role") != "system"),
+                        None,
+                    )
+                    if last_role in ("assistant", "tool"):
+                        logger.debug(
+                            "[stream] Empty response after %s message — expected, not retrying.",
+                            last_role,
+                        )
+                        for event in tail_events:
+                            yield event
+                        return
+                    wait = RATE_LIMIT_BACKOFF_BASE * (2**attempt)
+                    token_count, token_method = _estimate_tokens(
+                        self.model,
+                        full_messages,
+                    )
+                    dump_path = _dump_failed_request(
+                        model=self.model,
+                        kwargs=kwargs,
+                        error_type="empty_stream",
+                        attempt=attempt,
+                    )
+                    logger.warning(
+                        f"[stream-retry] {self.model} returned empty stream — "
+                        f"~{token_count} tokens ({token_method}). "
+                        f"Request dumped to: {dump_path}. "
+                        f"Retrying in {wait}s "
+                        f"(attempt {attempt + 1}/{RATE_LIMIT_MAX_RETRIES})"
+                    )
+                    await asyncio.sleep(wait)
+                    continue
+
+                # Success (or final attempt) — flush remaining events.
+                for event in tail_events:
+                    yield event
+                return
+
+            except RateLimitError as e:
+                if attempt < RATE_LIMIT_MAX_RETRIES:
+                    wait = RATE_LIMIT_BACKOFF_BASE * (2**attempt)
+                    logger.warning(
+                        f"[stream-retry] {self.model} rate limited (429): {e!s}. "
+                        f"Retrying in {wait}s "
+                        f"(attempt {attempt + 1}/{RATE_LIMIT_MAX_RETRIES})"
+                    )
+                    await asyncio.sleep(wait)
+                    continue
+                yield StreamErrorEvent(error=str(e), recoverable=False)
+                return
+
+            except Exception as e:
+                yield StreamErrorEvent(error=str(e), recoverable=False)
+                return

core/framework/llm/mock.py

@@ -2,10 +2,16 @@
 
 import json
 import re
-from collections.abc import Callable
+from collections.abc import AsyncIterator, Callable
 from typing import Any
 
 from framework.llm.provider import LLMProvider, LLMResponse, Tool, ToolResult, ToolUse
+from framework.llm.stream_events import (
+    FinishEvent,
+    StreamEvent,
+    TextDeltaEvent,
+    TextEndEvent,
+)
 
 
 class MockLLMProvider(LLMProvider):
@@ -175,3 +181,28 @@ class MockLLMProvider(LLMProvider):
             output_tokens=0,
             stop_reason="mock_complete",
         )
+
+    async def stream(
+        self,
+        messages: list[dict[str, Any]],
+        system: str = "",
+        tools: list[Tool] | None = None,
+        max_tokens: int = 4096,
+    ) -> AsyncIterator[StreamEvent]:
+        """Stream a mock completion as word-level TextDeltaEvents.
+
+        Splits the mock response into words and yields each as a separate
+        TextDeltaEvent with an accumulating snapshot, exercising the full
+        streaming pipeline without any API calls.
+        """
+        content = self._generate_mock_response(system=system, json_mode=False)
+        words = content.split(" ")
+        accumulated = ""
+
+        for i, word in enumerate(words):
+            chunk = word if i == 0 else " " + word
+            accumulated += chunk
+            yield TextDeltaEvent(content=chunk, snapshot=accumulated)
+
+        yield TextEndEvent(full_text=accumulated)
+        yield FinishEvent(stop_reason="mock_complete", model=self.model)

core/framework/llm/provider.py

@@ -1,7 +1,7 @@
 """LLM Provider abstraction for pluggable LLM backends."""
 
 from abc import ABC, abstractmethod
-from collections.abc import Callable
+from collections.abc import AsyncIterator, Callable
 from dataclasses import dataclass, field
 from typing import Any
 
@@ -108,3 +108,45 @@ class LLMProvider(ABC):
             Final LLMResponse after tool use completes
         """
         pass
+
+    async def stream(
+        self,
+        messages: list[dict[str, Any]],
+        system: str = "",
+        tools: list[Tool] | None = None,
+        max_tokens: int = 4096,
+    ) -> AsyncIterator["StreamEvent"]:
+        """
+        Stream a completion as an async iterator of StreamEvents.
+
+        Default implementation wraps complete() with synthetic events.
+        Subclasses SHOULD override for true streaming.
+
+        Tool orchestration is the CALLER's responsibility:
+        - Caller detects ToolCallEvent, executes tool, adds result
+          to messages, calls stream() again.
+        """
+        from framework.llm.stream_events import (
+            FinishEvent,
+            TextDeltaEvent,
+            TextEndEvent,
+        )
+
+        response = self.complete(
+            messages=messages,
+            system=system,
+            tools=tools,
+            max_tokens=max_tokens,
+        )
+        yield TextDeltaEvent(content=response.content, snapshot=response.content)
+        yield TextEndEvent(full_text=response.content)
+        yield FinishEvent(
+            stop_reason=response.stop_reason,
+            input_tokens=response.input_tokens,
+            output_tokens=response.output_tokens,
+            model=response.model,
+        )
+
+
+# Deferred import target for type annotation
+from framework.llm.stream_events import StreamEvent as StreamEvent  # noqa: E402, F401

core/framework/llm/stream_events.py

@@ -0,0 +1,96 @@
+"""Stream event types for LLM streaming responses.
+
+Defines a discriminated union of frozen dataclasses representing every event
+a streaming LLM call can produce. These types form the contract between the
+LLM provider layer, EventLoopNode, event bus, persistence, and monitoring.
+"""
+
+from __future__ import annotations
+
+from dataclasses import dataclass, field
+from typing import Any, Literal
+
+
+@dataclass(frozen=True)
+class TextDeltaEvent:
+    """A chunk of text produced by the LLM."""
+
+    type: Literal["text_delta"] = "text_delta"
+    content: str = ""  # this chunk's text
+    snapshot: str = ""  # accumulated text so far
+
+
+@dataclass(frozen=True)
+class TextEndEvent:
+    """Signals that text generation is complete."""
+
+    type: Literal["text_end"] = "text_end"
+    full_text: str = ""
+
+
+@dataclass(frozen=True)
+class ToolCallEvent:
+    """The LLM has requested a tool call."""
+
+    type: Literal["tool_call"] = "tool_call"
+    tool_use_id: str = ""
+    tool_name: str = ""
+    tool_input: dict[str, Any] = field(default_factory=dict)
+
+
+@dataclass(frozen=True)
+class ToolResultEvent:
+    """Result of executing a tool call."""
+
+    type: Literal["tool_result"] = "tool_result"
+    tool_use_id: str = ""
+    content: str = ""
+    is_error: bool = False
+
+
+@dataclass(frozen=True)
+class ReasoningStartEvent:
+    """The LLM has started a reasoning/thinking block."""
+
+    type: Literal["reasoning_start"] = "reasoning_start"
+
+
+@dataclass(frozen=True)
+class ReasoningDeltaEvent:
+    """A chunk of reasoning/thinking content."""
+
+    type: Literal["reasoning_delta"] = "reasoning_delta"
+    content: str = ""
+
+
+@dataclass(frozen=True)
+class FinishEvent:
+    """The LLM has finished generating."""
+
+    type: Literal["finish"] = "finish"
+    stop_reason: str = ""
+    input_tokens: int = 0
+    output_tokens: int = 0
+    model: str = ""
+
+
+@dataclass(frozen=True)
+class StreamErrorEvent:
+    """An error occurred during streaming."""
+
+    type: Literal["error"] = "error"
+    error: str = ""
+    recoverable: bool = False
+
+
+# Discriminated union of all stream event types
+StreamEvent = (
+    TextDeltaEvent
+    | TextEndEvent
+    | ToolCallEvent
+    | ToolResultEvent
+    | ReasoningStartEvent
+    | ReasoningDeltaEvent
+    | FinishEvent
+    | StreamErrorEvent
+)