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Agent Skills
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About Agent Skills
Agent Skills is an open-source engineering skill pack designed to give AI coding agents production-grade workflows for disciplined software delivery. It packages senior engineering practices into reusable commands, skills, quality gates, anti-rationalization checks, and verification-driven processes. The tool guides agents through structured stages such as spec, plan, build, test, review, simplify, secure, and ship, replacing ad hoc prompting with consistent, repeatable workflows. It supports a wide range of use cases, including test-driven development, debugging, security hardening, performance optimization, CI/CD, and observability, ensuring agents follow proven engineering standards rather than improvising. Agent Skills is ideal for software developers, engineering teams, technical founders, open-source maintainers, staff engineers, code reviewers, QA engineers, security engineers, platform teams, and DevOps teams who want AI coding agents to adhere to disciplined software delivery practices. The tool integrates with popular coding agents like Claude Code, Cursor, Gemini CLI, Windsurf, OpenCode, GitHub Copilot, Kiro, and Codex, allowing users to install skills as plugins or reference Markdown skill files. It includes specialist personas such as code reviewer, test engineer, security auditor, and web performance auditor, enabling targeted reviews and checks. Users can start with lifecycle commands like spec, plan, build, test, review, and ship, then layer in additional skills such as TDD, debugging, API design, or documentation as needed.
GitHub, Inc.
San Francisco, California, US · Founded 2008
- Founders
- Tom Preston-Werner, Chris Wanstrath, PJ Hyett, Scott Chacon
- Founded
- 2008
- Headquarters
- San Francisco, California, US
- Legal status
- Subsidiary of Microsoft (NASDAQ: MSFT)
Key features
- Structured engineering workflows from spec to ship (plan, build, test, review, simplify, secure, ship)
- Production-grade skills for test-driven development, debugging, code review, and security hardening
- Verification-driven workflows with explicit quality gates, checklists, and anti-rationalization rules
- Specialist personas for targeted reviews (code reviewer, test engineer, security auditor, performance auditor)
- Integration with Claude Code, Cursor, Gemini CLI, Windsurf, OpenCode, GitHub Copilot, Kiro, and Codex
- Reusable commands and Markdown skill files for easy installation and adoption
- Test-driven development and proof-based engineering practices
- CI/CD, observability, and performance optimization workflows
- Documentation and shipping checklists for consistent delivery
- Open-source licensing for transparency and community contributions
Use cases
- Guide AI coding agents through disciplined software delivery workflows from idea to production
- Enforce test-driven development, verification gates, and proof-based engineering practices in agent workflows
- Run security hardening, code review, performance optimization, and CI/CD checklists across supported agents
Pros
- Encodes senior engineering workflows into reusable, production-grade skills for AI coding agents
- Provides structured, disciplined processes across the full software delivery lifecycle
- Supports a wide range of specialist personas (e.g., code reviewer, security auditor)
- Integrates with popular coding agents like Claude Code, Cursor, and GitHub Copilot
- Open-source and extensible, allowing customization and community contributions
Cons
- Requires installation and configuration within specific coding agents
- Some skills may depend on supplementary shared checklists not included in per-skill installations
- Limited to environments where the supported coding agents are available
- May introduce additional complexity for teams unfamiliar with disciplined engineering practices
Frequently asked questions about Agent Skills
What is Agent Skills?
Agent Skills is an open-source collection of production-grade engineering workflows and quality gates designed to guide AI coding agents through disciplined software delivery. It packages senior engineering practices into reusable skills and commands that enforce consistency across development phases.
Who should use Agent Skills?
The tool is ideal for software developers, engineering teams, technical founders, open-source maintainers, staff engineers, code reviewers, QA engineers, security engineers, platform teams, and DevOps teams who want AI coding agents to follow proven engineering standards.
How does Agent Skills integrate with coding agents?
Agent Skills integrates with popular coding agents such as Claude Code, Cursor, Gemini CLI, Windsurf, OpenCode, GitHub Copilot, Kiro, and Codex. Users can install skills as plugins or reference Markdown skill files directly within these agents.
Can I install individual skills or only the full pack?
Users can install the full pack or select individual skills using the open skills CLI. Per-skill installations may lack access to supplementary shared checklists unless the full repository is cloned or checklists are manually copied.
What are the core commands provided by Agent Skills?
The tool provides nine slash commands mapped to the development lifecycle: /spec, /plan, /build, /test, /review, /ship, /constraints, /webperf, and /code-simplify. Each command activates relevant skills automatically.
Is Agent Skills free to use?
Yes, Agent Skills is open-source and available under the MIT license, making it free to use, modify, and distribute.
