Addy Osmani Agent Skills
Production-grade engineering skills for AI coding agents: planning, review, security, perf.
About
Agent Skills by Addy Osmani is a collection of production-grade engineering skills for AI coding agents, installable in Claude Code, Codex, Cursor, and other harnesses. It covers the full engineering workflow: planning and task breakdown, spec-driven development, test-driven development, code review and quality, debugging and error recovery, security hardening, performance optimization, observability, CI/CD, and git workflows.
With roughly 88,000 GitHub stars it is one of the most-starred skill collections in the ecosystem and is frequently cited as the community standard for agent engineering practices. Skills follow the Agent Skills specification with SKILL.md files plus references and scripts. Limitation: as a methodology collection it guides process rather than providing domain integrations — pair it with vendor skills (Vercel, Supabase, Stripe) for stack-specific knowledge.
What it can do
- Planning, spec-driven, and test-driven development skills
- Code review, debugging, and git workflow skills
- Security hardening and performance optimization guides
- CI/CD, observability, and API design playbooks
Setup
Install via npx skills add addyosmani/agent-skills or clone into ~/.claude/skills/.
Prerequisites
An AI coding agent that supports the Agent Skills format (Claude Code, Codex, Cursor).
Use cases
Works with
Trust score — 9/10
Scored 9/10 (verified tier, metrics-v1). Evidence: Verified via vendor site/docs/GitHub and reputable coverage, wave 65; Trending score 88/100 from researcher assessment.
★ 88,700 GitHub stars
Sources
Every fact above was checked against these sources. Where a claim comes from the provider and couldn't be independently verified, the text says so.