ai-guide/translations/en/Vibe Coding 零基础教程/10 编程工具/工具实战/OpenSpec：轻量规范开发框架.md

OpenSpec: Lightweight Specification-Driven Development Framework

Keeping documentation and code always in sync

Hello, I'm programmer Yupi.

In previous articles, we learned about the Spec-kit specification-driven development framework. But you might find Spec-kit's workflow too complex - is there a more lightweight alternative?

In this article, I'll introduce OpenSpec, a lightweight specification-driven development framework that's simpler and easier to use than Spec-kit, making it ideal for feature iteration in existing projects.

1. What is OpenSpec?

OpenSpec is a lightweight specification-driven development framework that's simpler and more user-friendly than Spec-kit.

Its core philosophy involves treating specification documents as part of the codebase. For every feature change: first draft a change proposal => implement after confirmation => archive the changes into specification documents after implementation, ensuring documentation and code remain synchronized.

2. Quick Start with OpenSpec

Let me walk you through a practical example to quickly get started with OpenSpec.

1. Installing OpenSpec

Visit the OpenSpec official repository to view documentation.

First ensure your computer has Node.js installed with the required version (e.g., here it requires Node.js >= 20.19.0), then install OpenSpec CLI globally:

npm install -g @fission-ai/openspec@latest

Navigate to your project directory and run the initialization command:

openspec init

During initialization, you'll be prompted to select AI tools to integrate (like Claude Code, Cursor, etc.). Here I choose Cursor.

After running the command, OpenSpec will automatically generate an openspec/ directory in your project containing:

• openspec/specs/: Stores main specification documents recording the project's complete current state
• openspec/changes/: Stores change proposals recording modification plans
• ⭐️ openspec/AGENTS.md: Guidelines for AI programming assistants to use OpenSpec for specification-driven development, including complete workflows for creating change proposals, writing requirement specifications, validating and archiving changes.
• openspec/project.md: Context description of the current project (used to record project information)

Additionally, it generates corresponding command files based on your selected AI programming tool, such as for Cursor:

With these files, we can begin the standardized development process.

2. Standardized Development Process

Referencing the official documentation, there are 5 main steps:

1) Draft Change Proposal

Directly tell your AI programming assistant to create a change proposal. For example, if I want to add user search functionality:

Create an OpenSpec change to add feature: search users by name and email

Or use the slash command in AI programming tools (like Claude Code, Cursor):

/openspec:proposal Add feature: search users by name and email

The AI will create a dedicated directory openspec/changes/add-user-search/ containing several documents:

• proposal.md: Describes what to change and why
• tasks.md: Task breakdown of implementation steps
• specs/…/spec.md: Specific content of requirement changes

2) Verify & Review

Run the following commands to check if the AI-created change proposal is correct:

openspec list                        # View all changes
openspec validate add-user-search    # Verify format correctness
openspec show add-user-search        # View detailed content

3) Review Proposal with Team

If improvements are needed, continue the conversation with AI, for example:

Can you help add more search conditions and limitations?

The AI will update specifications and task lists until consensus is reached.

4) Implement Changes

After confirming specifications, have the AI begin implementation:

The specifications are perfect, start generating code

Or use slash command:

/openspec:apply add-user-search

The AI will implement according to the task list in tasks.md and mark completion status.

Generation completes quickly, with the AI's output being very organized and all changes clearly visible:

5) Archive Changes

After all tasks are completed, have the AI archive this change:

Please archive this change

Or use slash command:

/openspec:archive add-user-search

Or run in terminal:

openspec archive add-user-search --yes

This command will:

• Move the change folder to openspec/changes/archive/ archive area
• Automatically merge requirement changes into openspec/specs/ main specifications
• Keep documentation and code synchronized

This way, through openspec/changes/ history, you can trace the context of each change at any time.

Additionally, during the development process, it's recommended to regularly run the openspec validate command to ensure specification integrity.

3. Differences Between OpenSpec and Spec-kit

By now, you can probably sense the differences between OpenSpec and Spec-kit.

• Spec-kit requires a complete 7-step process: establish guidelines → write requirements → clarify questions → finalize solution → break down tasks → review → write code), suitable for large new projects from scratch
• OpenSpec has a simplified process: draft proposal → review → implement → archive → validate, with faster onboarding, ideal for feature iteration in existing projects.

If you're iterating features in an existing project, OpenSpec is the better choice. If you're starting a large new project from scratch, Spec-kit's complete process helps establish a solid foundation.

Final Thoughts

By now, you should have a basic understanding of OpenSpec.

OpenSpec is more lightweight than Spec-kit and better suited for daily development feature iteration.

If you find Spec-kit too heavy, try OpenSpec. Its process is simpler but equally effective at keeping documentation and code synchronized, making team collaboration smoother.

I recommend trying OpenSpec in your projects to experience the benefits of specification-driven development firsthand.

Recommended Resources

1. Yupi AI Navigation Site: Comprehensive AI Resources, Latest AI News, Free AI Tutorials

2. Programming Navigation Learning Community: Learning Paths, Programming Tutorials, Practical Projects, Career Guides, Q&A

3. Programmer Interview Cheatsheet: Internship/Campus Recruitment/Social Recruitment High-Frequency Points, Enterprise Question Analysis

4. Programmer Resume Builder: Professional Templates, Rich Examples, Direct to Interviews

5. 1-on-1 Mock Interviews: Essential for Internship/Campus Recruitment/Social Recruitment Interviews to Get Offers