Engineering skills for coding agents
The lifecycle,
one slice at a time.
Nine commands that map to how the work actually moves: define it, plan it, build it, prove it, review it, then ship.
Install into Claude Code, Cursor, Codex, Copilot and other agents through the open skills CLI.
npx skills add addyosmani/agent-skills
Browse the skills
Command and principle
As published by the project/spec
Define what to build
Spec before code.
/plan
Plan how to build it
Small, atomic tasks.
/build
Build incrementally
One slice at a time.
/test
Prove it works
Tests are proof.
/review
Review before merge
Improve code health.
/ship
Ship to production
Faster is safer.
Six of the nine commands are shown. Skills also activate on their own based on the work in front of them.