github/spec-kit

💫 Toolkit to help you get started with SDD or any other process!

🌱 Spec Kit Build with a spec, fix a bug, or assess an idea — with your coding agent. English · 简体中文 · 日本語 · 한국어 Spec Kit is an open source toolkit that gives AI coding agents structured processes, reusable templates, and documented outcomes. Start with a ready-made process, customize it, or bring your own. ## Choose your process | What you need | Process | Outcome | | --- | --- | --- | | Build a feature or application | [Spec-Driven Development](#spec-driven-development) | A specification carried through planning, implementation, and convergence | | Diagnose and repair broken behavior | [Bug fixing](#bug-fixing) | An assessed cause, scoped fix, and recorded verification | | Decide whether an idea deserves investment | [Idea assessment](#idea-assessment) | An evidence-backed go, clarify, or stop decision | | Adopt or create a different process | [Your own process](#capabilities) | A process adapted or assembled from reusable primitives | These are independent entry points, not mandatory phases. SDD ships in core; bug fixing and assessment are bundled extensions you install when needed, and the primitives below let you adopt or create other processes. ## Capabilities Spec Kit combines ready-to-use processes with composable mechanisms: | Capability | Spec Kit mechanism | | --- | --- | | Connect to or switch between coding agents | [Integration](https://github.github.io/spec-kit/integrations/index.html) | | Add a command, quality gate, or complete process | [Extension](https://github.github.io/spec-kit/extensions/overview.html) | | Connect a process to an external tool or service | [Extension](https://github.github.io/spec-kit/extensions/overview.html) | | React to coding-agent lifecycle events | [Extension runtime event](https://github.github.io