Spec Kit#

Open-source toolkit by GitHub for Spec-Driven Development. CLI (specify) + slash commands across 30+ AI agents. MIT licensed.

“Build high-quality software faster. Focus on product scenarios and predictable outcomes instead of vibe coding.”

Core Workflow#

/speckit.constitution  →  Establish project principles
/speckit.specify       →  Define requirements (the "what" and "why")
/speckit.clarify       →  Structured questioning to reduce rework
/speckit.plan          →  Technical implementation plan (the "how")
/speckit.tasks         →  Actionable task breakdown with dependencies
/speckit.implement     →  Execute all tasks

Optional: /speckit.analyze (consistency check), /speckit.checklist (quality validation)

Key Features#

• 30+ supported agents: Claude Code, Codex, Gemini CLI, Cursor, Kiro CLI, Copilot, and many more
• 50+ community extensions: Jira, Azure DevOps, Confluence, security review, code review, V-Model testing
• Presets: Customize templates and commands without changing tooling
• Constitution: Project governance principles that guide all development
• Feature branching: Each feature gets its own branch, spec directory, and artifacts

In the Ecosystem#

Spec Kit operates at the methodology layer — above individual agents but orthogonal to organizational orchestration:

See Also#

• agent-skills-standard
• claude-code
• multi-agent-orchestration
• paperclip