spec-kit
An open-source toolkit that gives AI coding agents structured processes and templates for spec-driven development. It helps you build features, fix bugs or assess ideas with a written spec.
Share on XLicense: MIT
Overview
Spec Kit is an open source toolkit that gives AI coding agents structured processes, reusable templates and documented outcomes. It offers three independent entry points: spec-driven development for building a feature or application, bug fixing for diagnosing and repairing broken behavior, and idea assessment for deciding whether an idea deserves investment. You can customize a process or bring your own. It needs Python 3.11 or newer and uv.
Key features
- Spec-driven development from specification through planning and implementation
- Bug fixing process with assessed cause and recorded verification
- Idea assessment ending in a go, clarify or stop decision
- Reusable templates that you can customize
Best for
Teams working with a coding agent who want a written spec or a repeatable process behind the work. Bug fixing and assessment are bundled extensions that you install when needed.
- Upstream
- github/spec-kit
- Fork on GitHub
- Guo-astro/spec-kit
- Upstream stars
- 140k
- Category
- AI agents and LLM tools
- Language
- Python
- License
- MIT
- Forked
- 2025-09-28
- Sync status
- Diverged from upstream
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