What it does
Spec Kit is a toolkit that gives AI coding assistants a structured way to work. Instead of jumping straight into code, the assistant follows a set process with templates and recorded results.
Its main process is "spec-driven development": you describe what you want in a written specification, and the assistant carries it through planning and building. Add-ons cover fixing bugs and judging whether an idea is worth pursuing.
Teams can adjust the processes, add their own steps and rules, or share setups through catalogs. It works with GitHub Copilot and other supported coding assistants.
Who it's for
Software developers and teams who want AI coding assistants to work in a more planned, repeatable way.
Can I use it without coding?
Developers only. Needs Python, a terminal install and a supported AI coding assistant. New to this? Start here.
Can I run it?
- Cost
- Free, but needs an AI accountThe software is free, but it uses an online AI service (like OpenAI or Anthropic), which usually charges for use.
- Runs on
- Linux, Mac, Windows
- Computer
- An ordinary computer is fine
- API key
- Not needed
Try it
- Install Python, the uv tool and a supported AI coding assistant such as GitHub Copilot.
- Use the Spec Kit tool to create a new project for your assistant.
- Open your assistant in that project and run the Spec Kit skills one at a time.
Using Claude Code, Cursor or another AI coding assistant? Paste the prompt and it will walk you through the setup.New to this?
Before you install
- Only download from the official GitHub page. Copies with similar names exist for many popular projects.
- License (MIT): Very permissive: free to use, change and share, including for business.
- More on staying safe
Where people are talking about it
- Toolkit to help you get started with Spec-Driven DevelopmentHacker News · Nov 2025
- Spec-Driven Development Toolkit from GitHubHacker News · Sept 2025