Agent Skills by Addy Osmani

20 production-grade engineering skills for AI coding agents covering the full dev lifecycle: define, plan, build, verify, review, and ship — with quality gates and anti-rationalization tables.

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Last updated: April 22, 2026

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Install Command

Claude Code:
/plugin marketplace add addyosmani/agent-skills
/plugin install agent-skills@addy-agent-skills

Local/Development:
git clone https://github.com/addyosmani/agent-skills.git
claude --plugin-dir /path/to/agent-skills

Also supports Cursor, Gemini CLI, Windsurf, OpenCode, and GitHub Copilot.

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Tags

development-workflow

code-review

testing

shipping

planning

tdd

security

Agent Skills provides 20 structured workflows organized across six development lifecycle stages: Define (idea refinement, specification-driven development), Plan (task breakdown, decomposition), Build (incremental implementation, testing, context engineering, UI/API design), Verify (browser testing, debugging), Review (code quality, simplification, security, performance checks), and Ship (git workflows, CI/CD, deprecation, documentation, launch procedures). Each skill includes step-by-step processes, verification gates, and anti-rationalization tables addressing common shortcuts. Provides 7 slash commands: /spec, /plan, /build, /test, /review, /code-simplify, /ship. Created by Addy Osmani (Google Chrome engineering lead). 21k GitHub stars.

Agent Skills by Addy Osmani

AI Skill Market Insights

Quick Start

Install Command

TEAR & SHARE

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awesome-claude-skills

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