What is Open Agent Skill?

Open Agent Skill is an open marketplace for AI agent skills. It helps developers discover, publish, and share reusable skills, tools, plugins, and workflows for AI agents like Claude, GPT, and LangChain.

How do I install a skill?

You can install any skill using the command: npx skills add . Each skill page also shows specific installation instructions.

How are skills ranked?

Skills are ranked by real agent usage data, not just GitHub stars. We track actual API calls from agents, success rates, and response times to surface the most reliable skills.

How do I submit my own skill?

Visit the Submit page and provide your GitHub repository URL. Our AI will review your skill for quality and security, then it will be listed in the marketplace.

Inspect, patch, and verify code

Coding review agent stack

A stack for software agents that inspect repositories, review pull requests, generate tests, and turn findings into shippable patches.

Built for Engineering teams using AI agents inside active codebases.

Compare top picks Browse matching skills

Outcomes

Understand a repo
Review risky changes
Generate focused tests
Ship verified patches

Workflow map

How the stack fits together

Orient

Use repository skills to map files, dependencies, and existing test commands.

Review

Prioritize bugs, regressions, missing tests, and integration risks.

Patch

Apply scoped code changes that follow the project style.

Verify

Run local checks and summarize residual risk before handoff.

Recommended stack

Start with these skills

Ranked by workflow relevance, quality score, GitHub adoption, and maintenance freshness.

#1Antigravity Awesome SkillsExcellent · 100

A comprehensive library of over 1,273 agentic skills for various AI coding assistants, featuring clear documentation and installation instructions.

38K starsUnknowndevelopment

Compare

$ npx skills add sickn33/antigravity-awesome-skills

#2Open DesignExcellent · 100

Open Design is a powerful, local-first design tool that integrates multiple coding-agent CLIs for generating various design outputs.

50K starsUnknownproductivity

Compare

$ npx skills add nexu-io/open-design

#3SkillsExcellent · 100

A marketplace for AI-assisted security analysis and auditing plugins.

5.3K starsUnknownsecurity

Compare

$ npx skills add trailofbits/skills

#4OpenAgentsControlExcellent · 100

AI agent framework for plan-first development workflows with approval-based execution. Multi-language support (TypeScript, Python, Go, Rust) with automatic testing, code review, and validation built for OpenCode

4.1K starsMITagent-frameworks

Compare

$ npx skills add darrenhinde/OpenAgentsControl

#5Agent SkillsExcellent · 100

Agent Skills provides a structured approach for AI coding agents to follow production-grade engineering practices throughout the software development lifecycle.

45K starsUnknowndevelopment

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$ npx skills add addyosmani/agent-skills

#6Claude DevtoolsExcellent · 100

The missing DevTools for Claude Code — inspect session logs, tool calls, token usage, subagents, and context window in a visual UI. Free, open source.

3.4K starsMITagent-frameworks

Compare

$ npx skills add matt1398/claude-devtools

#7Baoyu SkillsExcellent · 100

A repository of skills designed to enhance daily work efficiency with Claude Code.

19K starsUnknownproductivity

Compare

$ npx skills add JimLiu/baoyu-skills

#8Claude Code System PromptsExcellent · 100

All parts of Claude Code's system prompt, 27 builtin tool descriptions, sub agent prompts (Plan/Explore/Task), utility prompts (CLAUDE.md, compact, statusline, magic docs, WebFetch, Bash cmd, security review, agent creation). Updated for each Claude Code version.

10K starsMITdevelopment

Compare

$ npx skills add Piebald-AI/claude-code-system-prompts

Ideal for

- PR review
- Bug fixing
- Regression testing
- Release preparation

Avoid when

- You cannot run tests locally
- The repository contains secrets or unreviewed generated changes