Yuki Yoshida

An Anthropic engineer packed his whole engineering workflow into agent skills, so anyone can copy it. Addy Osmani, ex-Google, now works on Claude Code. His repo turns a coding agent into a senior engineer. Each skill is a structured workflow: when to use it, the steps, the excuses agents use to skip steps with a rebuttal for each, red flags, and the evidence required before it can call the job done. 25 skills, sorted by phase: > Define: figure out what to build. > Plan: break it into small tasks. > Build: write it test-first. > Verify: debug and prove it works. > Review: quality, security, performance. > Ship: rollout, CI, docs. Skills also switch on by themselves. Start designing an API and the API skill kicks in. Useful if you ship with agents solo, or if you want every agent on your team held to the same bar. npx skills add addyosmani/agent-skills The full pipeline is in the article below, repo in the first reply ↓