engineering / skill
Agent Skills
Guide your AI coding agent through spec, plan, build, test, review and ship stages with 25 engineering skills.
At a glance
- Purpose
- Guide your AI coding agent through spec, plan, build, test, review and ship stages with 25 engineering skills.
- Runs in
- Local agent with shell
- Operating systems
- macOS, Windows
- Needs
- Runtime: Not stated; Needs internet: Not stated; Needs accounts or API keys beyond your agent: Not stated
- Files and data
- Reads files: Yes; Writes files: Yes; Sends data to other services: Not stated
- Tool type
- Skill
- Delivery
- From GitHub
- Version
- Latest on the main branch
- Access
- Code on GitHub
- Compatibility
- According to the README, the skills install into Claude Code, Cursor, Codex, GitHub Copilot, Cline and more through the open skills CLI, which it says reaches 70+ agents. It also gives steps for Antigravity CLI, Gemini CLI, Windsurf, OpenCode, Kiro and Command Code. The README says the skills are plain Markdown and work with any agent that accepts system prompts or instruction files.
- External costs
- The repository is MIT-licensed and states no pricing. Your coding agent or model provider may charge for usage.
- Permissions
- The skills act through your coding agent with the access you give it. According to the README, the repository also carries lifecycle hooks for Claude Code and four agent personas for reviews. It says /build auto has you approve the plan once and then runs every task autonomously, committing each task and pausing on failures or risky steps. It also describes a browser skill that uses Chrome DevTools MCP for DOM inspection, console logs, network traces and performance profiling.
- Usage terms
- MIT License, as stated in the repository. See its LICENSE file for the exact terms.
Code on GitHub
addyosmani/agent-skills
MITProduction-grade engineering skills for AI coding agents.
Topics: agent-skills antigravity claude-code codex cursor skills
Public GitHub data fetched · 0 days old
Skill folders in this repository (25)
Folders that contain a SKILL.md file, from GitHub's file list on .
skills/api-and-interface-designskills/browser-testing-with-devtoolsskills/ci-cd-and-automationskills/code-review-and-qualityskills/code-simplificationskills/constraint-driven-developmentskills/context-engineeringskills/debugging-and-error-recoveryskills/deprecation-and-migrationskills/documentation-and-adrsskills/doubt-driven-developmentskills/frontend-ui-engineeringskills/git-workflow-and-versioningskills/idea-refineskills/incremental-implementationskills/interview-meskills/observability-and-instrumentationskills/performance-optimizationskills/planning-and-task-breakdownskills/security-and-hardeningskills/shipping-and-launchskills/source-driven-developmentskills/spec-driven-developmentskills/test-driven-developmentskills/using-agent-skills
What it does
Agent Skills is a collection of 25 skills for AI coding agents. According to the README, the skills encode the workflows, quality gates and practices that senior engineers use, and they cover six stages: define, plan, build, verify, review and ship.The README groups the skills by stage. Examples include spec-driven-development, planning-and-task-breakdown, incremental-implementation, test-driven-development, code-review-and-quality, security-and-hardening, ci-cd-and-automation and shipping-and-launch. A meta skill, using-agent-skills, maps incoming work to the right skill. The README also lists nine slash commands such as /spec, /plan, /build, /test, /review and /ship, four agent personas (code reviewer, test engineer, security auditor and web performance auditor) and seven reference checklists.
The README says every skill follows the same structure: an overview, when to use it, a step-by-step process, a table of common excuses with rebuttals, red flags and evidence requirements.
Who it is for
Developers who use AI coding agents and want them to follow a consistent spec, plan, build, review and ship workflow.Example tasks
Write a spec before any code with the spec-driven-development skill.Break a spec into small tasks with acceptance criteria using the planning-and-task-breakdown skill.
Review a change before merging with the code-review-and-quality skill.
Work through failing tests or broken builds with the debugging-and-error-recovery skill.
Prepare a production release with the shipping-and-launch skill.