Skills

Open-source skill collections that extend Claude Code and other AI coding agents with specialized workflows.

🛠️ Skills

agent-skills — 19 production-grade engineering workflow skills for AI coding agents covering the full dev lifecycle (define → plan → build → verify → review → ship); works with Claude Code, Cursor, Gemini CLI, Windsurf, and GitHub Copilot

Install in Claude Code:
Terminal window
```
/plugin marketplace add addyosmani/agent-skills
/plugin install agent-skills@addy-agent-skills
```
Key skills: spec-driven-development, test-driven-development, security-and-hardening, performance-optimization, code-review-and-quality, shipping-and-launch
claude-improve — self-improving retrospective skill; after each conversation Claude reflects on what went wrong and updates its own CLAUDE.md rules to do better next time