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openagentskills

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A community-driven library of reusable AI agent skills for Claude Code, Cursor, Codex, Cline, and more.

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# OpenAgentSkills

**A community-driven library of reusable AI agent skills — drop one in and your agent gains a new superpower.**

> **GitHub is where you contribute. [SimplyUtils](https://simplyutils.com/ai-resources) is where you discover.**

Skills work across multiple agent environments: **Claude Code**, **Cursor**, **Codex**, **Cline**, **Antigravity**, and more.

---

## Why OpenAgentSkills?

- **Saves you time.** Stop writing the same "review this component" or "write a commit message" prompts from scratch. Proven, battle-tested skills are ready to drop in.
- **Agent-agnostic.** You can use the same skill in Claude Code today and Cursor tomorrow. Skills are just robust instructions.
- **Community-owned.** Skills are contributed by real developers who use them in production. No vendor lock-in, no paywalls.
- **Discoverable.** Browse, search, and filter the entire library at [simplyutils.com/ai-resources](https://simplyutils.com/ai-resources) without digging through folders.

---

## Skills Directory

| Skill | Category | Description |
|---|---|---|
| [React Component Reviewer](skills/react-code-reviewer/SKILL.md) | coding | Analyzes React components for performance, accessibility, and modern hook usage |
| [Git Commit Writer](skills/git-commit-writer/SKILL.md) | coding | Generates conventional commit messages from staged changes or a diff |
| [Unit Test Writer](skills/unit-test-writer/SKILL.md) | coding | Generates comprehensive unit tests for any function or module with edge cases |
| [Bug Root Cause Analyzer](skills/bug-root-cause-analyzer/SKILL.md) | coding | Systematically diagnoses bugs by tracing execution flow and identifying root causes |
| [Refactor Planner](skills/refactor-planner/SKILL.md) | coding | Creates a safe, step-by-step plan to refactor messy code without breaking behavior |
| [Stack Trace Analyzer](skills/stack-trace-analyzer/SKILL.md) | coding | Interprets error stack traces to pinpoint root cause and suggest fixes |
| [Playwright Test Builder](skills/playwright-test-builder/SKILL.md) | coding | Generates robust Playwright end-to-end tests for web pages and user flows |
| [REST API Endpoint Designer](skills/api-endpoint-designer/SKILL.md) | coding | Designs RESTful API endpoints following OpenAPI spec and industry best practices |
| [API Documentation Generator](skills/api-docs-generator/SKILL.md) | coding | Generates OpenAPI 3.0 documentation for REST endpoints from code |
| [Accessibility Audit Helper](skills/accessibility-audit-helper/SKILL.md) | coding | Reviews UI code for WCAG 2.1 violations with severity levels and exact fixes |
| [MCP Integration Assistant](skills/mcp-integration-assistant/SKILL.md) | coding | Designs and implements Model Context Protocol server integrations |
| [SQL Query Optimizer](skills/sql-query-optimizer/SKILL.md) | data | Reviews SQL queries for performance issues and rewrites them with optimized plans |
| [Database Schema Reviewer](skills/database-schema-reviewer/SKILL.md) | data | Reviews schemas for normalization issues, missing indexes, and scalability risks |
| [Docker Compose Generator](skills/docker-compose-generator/SKILL.md) | devops | Generates production-ready docker-compose.yml files for any application stack |
| [RAG Workflow Planner](skills/rag-workflow-planner/SKILL.md) | research | Designs complete RAG pipelines including chunking, embeddings, and retrieval strategy |
| [Prompt Refiner](skills/prompt-refiner/SKILL.md) | research | Improves AI prompts to be clearer, more specific, and produce consistent outputs |
| [SEO Content Optimizer](skills/seo-content-optimizer/SKILL.md) | writing | Analyzes and rewrites content to maximize search visibility without sounding robotic |
| [SEO Metadata Generator](skills/seo-metadata-generator/SKILL.md) | writing | Generates title tags, meta descriptions, OG tags, and JSON-LD structured data |
| [Technical Blog Post Writer](skills/tech-blog-writer/SKILL.md) | writing | Writes engaging, accurate technical blog posts targeted at developer audiences |
| [Blog Outline Generator](skills/blog-outline-generator/SKILL.md) | writing | Generates SEO-optimized blog post outlines with H2/H3 structure and key points |
| [Newsletter Summary Writer](skills/newsletter-summary-writer/SKILL.md) | writing | Condenses articles or documents into concise, engaging newsletter-ready summaries |
| [Migration Guide Writer](skills/migration-guide-writer/SKILL.md) | writing | Writes clear migration guides for library upgrades and breaking API changes |
| [Tech Debt Auditor](skills/tech-debt-auditor/SKILL.md) | coding | Identifies and prioritizes technical debt with an effort/impact matrix |
| [Architecture Explainer](skills/architecture-explainer/SKILL.md) | coding | Produces a clear architecture overview with ASCII diagrams from any codebase |
| [Breaking Change Detector](skills/breaking-change-detector/SKILL.md) | coding | Compares two API/codebase versions and flags all breaking changes with migration hints |
| [Error Log Summarizer](skills/error-log-summarizer/SKILL.md) | coding | Parses raw error logs into a prioritized summary of unique issues |
| [Flaky Test Analyzer](skills/flaky-test-analyzer/SKILL.md) | coding | Diagnoses why tests pass inconsistently and suggests fixes |
| [Edge Case Discovery](skills/edge-case-discovery/SKILL.md) | coding | Systematically identifies edge cases and boundary conditions for any function or flow |
| [Unit Test Improver](skills/unit-test-improver/SKILL.md) | coding | Reviews existing tests for gaps and weak assertions, then rewrites them |
| [Responsive Layout Reviewer](skills/responsive-layout-reviewer/SKILL.md) | coding | Reviews HTML/CSS for responsive design issues across mobile, tablet, and desktop |
| [Form UX Optimizer](skills/form-ux-optimizer/SKILL.md) | coding | Reviews web forms for usability, validation, error states, and accessibility |
| [Auth Flow Planner](skills/auth-flow-planner/SKILL.md) | coding | Designs a secure auth and authorization flow covering login, sessions, roles, and edge cases |
| [Caching Strategy Advisor](skills/caching-strategy-advisor/SKILL.md) | devops | Recommends the right cache layer, TTL strategy, and invalidation approach |
| [Observability Checklist](skills/observability-checklist/SKILL.md) | devops | Reviews a service against logs, metrics, traces, and alerting gaps |
| [Hallucination Risk Reviewer](skills/hallucination-risk-reviewer/SKILL.md) | research | Reviews AI-generated output for factual risks and hallucination patterns |
| [AI Feature Spec Writer](skills/ai-feature-spec-writer/SKILL.md) | research | Writes a complete product spec for AI features including model requirements and eval criteria |
| [SDK Quickstart Writer](skills/sdk-quickstart-writer/SKILL.md) | writing | Generates concise, copy-paste-ready quickstart guides for any SDK or library |
| [FAQ Generator](skills/faq-generator/SKILL.md) | writing | Generates a comprehensive FAQ section for any product, API, or docs page |
| [Troubleshooting Guide Builder](skills/troubleshooting-guide-builder/SKILL.md) | writing | Builds structured troubleshooting guides in symptom → cause → fix format |
| [Landing Page Copy Improver](skills/landing-page-copy-improver/SKILL.md) | writing | Rewrites landing page copy to be more compelling and conversion-optimized |
| [Article Repurposer](skills/article-repurposer/SKILL.md) | writing | Turns a long-form article into a tweet thread, LinkedIn post, TL;DR, and key quotes |
| [Social Post Thread Writer](skills/social-post-thread-writer/SKILL.md) | writing | Converts any content into an engaging Twitter/X or LinkedIn thread |
| [X Twitter Source Packet Builder](skills/x-twitter-source-packet-builder/SKILL.md) | research | Converts reviewed X/Twitter evidence into compact source packets for downstream research and writing |
| [PR Description Writer](skills/pr-description-writer/SKILL.md) | productivity | Writes clear, thorough pull request descriptions from a diff or list of changes |
| [Release Notes Generator](skills/release-notes-generator/SKILL.md) | productivity | Generates user-friendly release notes from a git log or list of PRs |
| [README Writer](skills/readme-writer/SKILL.md) | productivity | Generates a professional, comprehensive README.md for any project |
| [Issue to PR Planner](skills/issue-to-pr-planner/SKILL.md) | productivity | Takes a GitHub issue and produces a step-by-step implementation plan |
| [Changelog Curator](skills/changelog-curator/SKILL.md) | productivity | Maintains and formats CHANGELOG.md following Keep a Changelog conventions |
| [Documentation Gap Finder](skills/documentation-gap-finder/SKILL.md) | productivity | Audits a repo and lists everything undocumented, outdated, or unclear |
| [Sprint Summary Generator](skills/sprint-summary-generator/SKILL.md) | productivity | Converts completed tickets or commits into a stakeholder-ready sprint summary |
| [Incident Postmortem Writer](skills/incident-postmortem-writer/SKILL.md) | productivity | Writes a blameless postmortem from an incident timeline or Slack thread |

---

## Skill Categories

| Category | Description |
|---|---|
| `coding` | Code generation, review, refactoring, debugging |
| `writing` | Content creation, editing, summarization |
| `data` | Data analysis, transformation, visualization |
| `devops` | CI/CD, deployment, infrastructure |
| `research` | Literature review, fact-checking, synthesis |
| `productivity` | Task management, planning, documentation |

---

## Installation

```bash
# Use without installing (recommended for one-off use)
npx openagentskills list

# Install globally for repeated use
npm install -g openagentskills
```

**Requirements:** Node.js 16 or higher.

---

## CLI — Search Skills from Your Terminal

No need to open a browser. Use the CLI to find and explore skills right in your terminal.

```bash
# Search by keyword
npx openagentskills search "api test"

# List all skills, or filter by category
npx openagentskills list
npx openagentskills list --category coding

# Show full details for a skill
npx openagentskills info api-docs-generator
```

**Categories:** `coding` · `writing` · `productivity` · `devops` · `research` · `data`

Install globally to skip `npx`:
```bash
npm install -g openagentskills
openagentskills list
```

---

## Quick Start

Get up and running in under 2 minutes:

```bash
# 1. Find a skill you need
npx openagentskills search "unit test"

# 2. Copy the skill into your project
mkdir -p .agents/skills/unit-test-writer
curl -o .agents/skills/unit-test-writer/SKILL.md \
  https://raw.githubusercontent.com/Notysoty/openagentskills/main/skills/unit-test-writer/SKILL.md

# 3. Tell your agent to use it
# "Write unit tests for src/auth.ts using the Unit Test Writer skill."
```

For Cursor: paste the `## The Prompt / Instructions` section into your `.cursorrules` file.

---

## How It Works

**Step 1 — Find a skill**
Browse the table above, run `npx openagentskills search <query>`, or visit [simplyutils.com/ai-resources](https://simplyutils.com/ai-resources).

**Step 2 — Drop it into your project**
Copy the skill folder into your agent's skills directory:
```
your-project/
└── .agents/
    └── skills/
        └── git-commit-writer/
            └── SKILL.md
```
For Cursor, add the contents to your `.cursorrules` file or paste it as a custom prompt.

**Step 3 — Use it**
Tell your agent to use the skill by name. For example:
> "Write a commit message for my staged changes using the Git Commit Writer skill."

---

## Contributing a Skill

See [CONTRIBUTING.md](CONTRIBUTING.md) for the full guide. The short version:

1. Fork this repository
2. Create a folder: `skills/your-skill-name/`
3. Write a `SKILL.md` using the template below
4. Open a pull request

Merged skills automatically appear on [simplyutils.com/ai-resources](https://simplyutils.com/ai-resources).

### SKILL.md Template

```yaml
---
name: Your Skill Name
description: One sentence describing what this skill does.
category: coding
tags: # The capabilities/topics this skill covers (e.g., react, seo, data-analysis)
  - your-tag
  - another-tag
author: your-github-username
---
```

```markdown
# Your Skill Name

## What this skill does

Describe what the skill enables the agent to do and when you'd use it.

## How to use

### Claude Code / Cline

Copy this file to `.agents/skills/your-skill-name/SKILL.md` in your project.
Then ask: "Do X using the Your Skill Name skill."

### Cursor

Add this to your `.cursorrules` or reference it during a chat session.

## The Prompt / Instructions for the Agent

Step-by-step instructions the agent should follow when this skill is invoked.

## Example

**Input to Agent:**
> "..."

**Output from Agent:**
> ...

## Notes

Any gotchas, limitations, or tips for best results.
```

---

## Skill Quality Standards

To be accepted, a skill must:
- Have a clear, specific use case (not too vague or too narrow)
- Include at least one real input → output example
- Be original (not a duplicate of an existing skill)
- Use the YAML frontmatter format correctly with all required fields

### Why Tags?
- **Tags:** Define the capabilities, frameworks, or topics the skill relates to (e.g., `react`, `seo`, `python`, `git`). They let people easily find the right workflow for their current problem space.

---

## Roadmap

- Web UI for searching and filtering skills at simplyutils.com/ai-resources
- Skill versioning so agents can pin to a specific version
- Automated CI validation of SKILL.md frontmatter on every PR
- Skill rating and usage stats from the community
- One-click install for supported agent environments

---

## Contributors

Skills in this library were contributed by developers who use them daily. Want to see your name here?

> **You could be here!** Open a PR with a new skill and join the list.

---

## License

MIT — all skills are open-source and free to use.

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