Spec Kit: Turn a written spec into plans, tasks and code

What it does

Spec Kit is GitHub's open-source toolkit for spec-driven development: you write a spec and your AI coding agent turns it into a plan, tasks and code. You install a command-line tool called Specify, create a project, then run skills (named commands) in your agent's chat one at a time: write principles, a specification, a plan and tasks, then implement.

How to use it

Install the Specify tool with uv, create a project with the init command naming your agent integration, then open your coding agent in that project folder. In the agent's chat, run the constitution, specify, plan, tasks and implement skills in order, reviewing each result.

Common use cases

• Ask for a photo organizer with albums grouped by date, then follow with a plan using Vite and SQLite; the agent produces a specification, a plan, a task list and code.
• Report that submitting an empty password crashes the login form; the bug extension writes assessment, fix and test reports, ending in a verdict of verified, partial or failed.
• Submit a product idea to the idea-assessment process and receive an evidence-backed go, clarify or stop decision.