Speckit Plan

Turns your feature spec into a structured implementation plan with all the design artifacts you need before writing code. It runs through phases: research to resolve unknowns, data modeling to extract entities, and contract generation for APIs. The workflow enforces constitution checks and quality gates, so you catch architectural violations early. It also updates your agent context files (Claude, Copilot, etc.) with new tech decisions. Honestly, this is the kind of structured planning that senior devs do in their heads but forget to document. Now it's codified and repeatable, which matters when you're onboarding someone or revisiting a stale branch.

Install to Claude Code

npx -y skills add dceoy/speckit-agent-skills --skill speckit-plan --agent claude-code