Production-grade engineering skills for AI coding agents.
Agent-skills is a collection of production-grade engineering skills for AI coding agents like Claude Code, Cursor, Copilot, and Antigravity. The project provides markdown-first workflows organized by development phase—from Define and Plan through Build, Verify, Review, and Ship—along with reusable agent personas (code-reviewer, security-auditor, test-engineer, web-performance-auditor) and slash commands that help orchestrate multi-agent work. The repository is maintained by Addy Osmani and includes an evaluation framework (Tier 1–3 testing) to ensure skills trigger correctly, remain distinct, and produce the promised changes in agent behavior.