agent-skills

agent-skills is Addy Osmani’s collection of production-grade engineering skills for AI coding agents — reusable, opinionated instructions that teach your agent how a senior engineer actually approaches a task, not just how to autocomplete.

It works across Claude Code, Codex, Cursor and Antigravity, so you can drop battle-tested skills into whatever harness you already use. A strong starting point if you want your agent to write code that fits real engineering standards.