Part 1 of a 2-part series. This post covers the whole tool and the "one source of truth" problem. Part 2 goes deep on the most novel piece — letting your npm packages ship agent skills. (dev.to shows the series navigation once Part 2 is published.)
TL;DR
Write project instructions once in AGENTS.md → agent-kit derives CLAUDE.md, .gemini/GEMINI.md, .github/copilot-instructions.md, and CONVENTIONS.md. No more drift.
It mirrors skills from your installed packages and your project into every agent's directory (.claude/skills/, .cursor/skills/, …).
Keep nested skills/ folders Claude Code can't read natively — agent-kit flattens them into the layout it requires on sync.
