Directory / Spec Kit
Spec Kit
Verified
GitHub’s toolkit for spec-driven development with coding agents.
Spec Kit is GitHub’s open toolkit for spec-driven development: specify, plan, and implement with coding agents against a structured spec in the repo. It is an intent-layer convention plus scripts, not a SaaS.
- Model independence
- Multi-model
- Deployment
- Self-hosted
- Open source
- Yes
- License
- See repository LICENSE
- Pricing model
- Free
- Added / updated
- 19 Aug 2026 / 19 Aug 2026
github.com/github/spec-kit · Docs · Source
Editorial take
Spec Kit is a convention you can vendor. That is a strength. It will not run the agent or the sandbox. Use it as the hold-out-adjacent spec format, then point Claude Code or Copilot at it. License is in the repo; we did not assume MIT.
Strengths
- Open, repo-native spec workflow from GitHub.
- Works with whatever harness you already run.
- Free as in you keep the markdown.
Limitations
- Not a product with SLO.
- A spec folder nobody updates is worse than tickets.
- GitHub-flavored; still usable elsewhere.