Product / UX / Orchestration & agents

Spec Kit

GitHub's toolkit for spec-driven development, which works with coding agents rather than being one. A structured specify, plan, tasks and implement workflow produces Markdown artifacts that feed each phase, giving an agent structured context instead of ad-hoc prompts. Its CLI scaffolds those files and orchestrates more than thirty agents.

Distributed both from the repository and as a CLI package on PyPI. Verified 2026-08-13 via the github/spec-kit repository.

Openness

5 high confidence

5.0

license: MIT(OSI)
source: public
core-gated: ungated

Fully MIT and free: the whole Spec-Driven Development toolkit is published, with no paid tier, enterprise directory or license key.

https://github.com/github/spec-kit recorded 2026-08-13
MIT license, full public source for the Spec-Driven Development toolkit, 127.2k stars and 11.4k forks; no paid tier or enterprise directory

Adoption

2 medium confidence

2.0

76,423 downloads in the trailing 30 days for specify-cli, which bands at level 2 (10K-100K) on the software and model adoption scale. The PyPI package carries the same version as the repository's latest tag, so it is a live distribution channel rather than a stale one, and a download count outranks the star count.

https://pypistats.org/api/packages/specify-cli/recent recorded 2026-08-12
76,423 downloads in the trailing 30 days for specify-cli

Capability

4 medium confidence

4.0

Methodology/orchestration layer over coding agents rather than a code-writing engine itself.

https://github.blog/ai-and-ml/generative-ai/spec-driven-development-with-ai-get-started-with-a-new-open-source-toolkit/ recorded 2026-08-13
Spec-Driven Development definition and the four-phase process
https://github.com/github/spec-kit recorded 2026-08-13
'Define what to build before building it - with any AI coding agent'; the specify CLI scaffolding and chained Markdown artifacts; no benchmark figure

Verified 2026-08-12