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* docs: refresh landing page ecosystem stats Update stale numbers in docs/index.md to match current catalogs on upstream/main and live GitHub data: extensions 105->138, presets 22->25, integrations 30+->35, contributors 200+->240+, friends 4->6, GitHub stars 106K+->121K+, extension authors 60+->70+, and the last-updated date. Assisted-by: GitHub Copilot (model: Claude Opus 4.8, autonomous) Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: e5f34221-4e6c-42e8-9fa3-5cfbc26104d1 * docs: align community extension stats on overview page Update docs/community/overview.md from "Over 90 ... 50+ authors" to "Over 130 ... 70+ authors" so it matches the refreshed landing-page numbers in docs/index.md (137 community extensions, 77 unique authors). Assisted-by: GitHub Copilot (model: Claude Opus 4.8, autonomous) Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: 134166d9-e599-44fa-a88d-daf84ab6aca6 --------- Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
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GitHub Spec Kit
Define what to build before building it — with any AI coding agent.
Spec Kit is a toolkit for Spec-Driven Development (SDD), a methodology that puts specifications at the center of AI-assisted software development. Instead of jumping straight to code, you describe what to build, refine it through structured phases, and let your AI coding agent implement it.
Spec-driven by default
The core SDD process ships ready to use: Spec → Plan → Tasks → Implement.
Define what to build before building it. Rich templates, quality checklists, and cross-artifact analysis come out of the box. Each phase produces a Markdown artifact that feeds the next — giving your AI coding agent structured context instead of ad-hoc prompts.
Use any coding agent
35 integrations — Copilot, Gemini, Codex, Kilo Code, Zed, Claude, Forge, Kiro, and more. Switch freely between agents with a single command. No lock-in.
Run specify init with your agent of choice and Spec Kit sets up the right command files, context rules, and directory structures automatically. If your agent isn't listed, the generic integration is an escape hatch for any tool.
Make it your own
138 community extensions (70+ authors), 25 presets, and growing. Tune the core process with presets, extend it with extensions, orchestrate it with workflows, or replace it entirely. Build and publish your own.
Including entirely different SDD processes:
- AIDE — 7-step AI-driven engineering lifecycle
- Canon — baseline-driven workflows (spec-first, code-first, spec-drift)
- Product Forge — product-management-oriented SDD
- FX→.NET — end-to-end .NET Framework migration across 7 phases
- MAQA — multi-agent orchestration with quality assurance gates
Integrate into your organization
Works offline, behind firewalls, and on Windows, macOS, and Linux. Host your own extension and preset catalogs so your organization controls what gets installed.
Community extensions like CI Guard and Architecture Guard add compliance gates and governance that fit the way your team already works.
Built by the community
240+ contributors power the Spec Kit ecosystem — from core integrations to entirely new development processes. Anyone can create and publish an extension, preset, or workflow.
Explore the docs
uvx --from git+https://github.com/github/spec-kit.git
specify init my-project --integration copilot
Ready to start? Follow the Quick Start Guide.
Last updated: July 16, 2026