Awesome Claude Skills

Claude Skills are folders with instructions, scripts, and resources that teach Claude specific tasks. Skills can include executable code and are loaded only when needed, allowing you to maintain hundreds without performance impact. Multiple skills can run together for complex tasks like document creation, code testing, and data analysis.

Note: This Skills collection were originally created for Claude Code, but have since evolved into the Agent Skills open standard adopted by multiple AI coding assistants. This means skills listed here can also be used with Codex, Gemini CLI and other compatible tools. See the table below for paths and documentation.

What a Basic Skill Looks Like?

---
name: api-tester
description: Test REST APIs and validate responses
---

# API Tester

Test HTTP endpoints and validate response structures.

## When to Use This Skill

Use this skill when you need to test API endpoints and verify response data.

## Instructions

When testing an API:

1. Send a request to the specified endpoint
2. Check the response status code
3. Validate the response body structure
4. Report any errors or unexpected results

## Response Validation

- Verify required fields exist
- Check data types match expected values
- Confirm nested objects have correct structure

See the official repo and creation guide for more details.

Skills Paths for Other AI Coding Assistants

Official Claude Skills

Document Creation

• anthropics/docx - Create, edit, and analyze Word documents
• anthropics/doc-coauthoring - Collaborative document editing and co-authoring
• anthropics/pptx - Create, edit, and analyze PowerPoint presentations
• anthropics/xlsx - Create, edit, and analyze Excel spreadsheets
• anthropics/pdf - Extract text, create PDFs, and handle forms

Creative and Design

• anthropics/algorithmic-art - Create generative art using p5.js with seeded randomness
• anthropics/canvas-design - Design visual art in PNG and PDF formats
• anthropics/frontend-design - Frontend design and UI/UX development tools
• anthropics/slack-gif-creator - Create animated GIFs optimized for Slack size constraints
• anthropics/theme-factory - Style artifacts with professional themes or generate custom themes

Development

• anthropics/web-artifacts-builder - Build complex claude.ai HTML artifacts with React and Tailwind
• anthropics/mcp-builder - Create MCP servers to integrate external APIs and services
• anthropics/webapp-testing - Test local web applications using Playwright

Branding and Communication

• anthropics/brand-guidelines - Apply Anthropic's brand colors and typography to artifacts
• anthropics/internal-comms - Write status reports, newsletters, and FAQs

Meta

• anthropics/skill-creator - Guide for creating skills that extend Claude's capabilities
• anthropics/template - Basic template for creating new skills

Skills by Google Labs (Stitch)

Agent Skills for the Stitch MCP server, compatible with Claude Code, Gemini CLI, Cursor, and more.

• google-labs-code/design-md - Create and manage DESIGN.md files
• google-labs-code/react-components - Stitch to React components conversion

Skills by Vercel Engineering Team

• vercel-labs/react-best-practices - React best practices and patterns
• vercel-labs/vercel-deploy-claimable - Deploy projects to Vercel
• vercel-labs/web-design-guidelines - Web design guidelines and standards

Security Skills by Trail of Bits Team

• trailofbits/ask-questions-if-underspecified - Prompt for clarification on ambiguous requirements
• trailofbits/audit-context-building - Deep architectural context via ultra-granular code analysis
• trailofbits/building-secure-contracts - Smart contract security toolkit with vulnerability scanners for 6 blockchains
• trailofbits/burpsuite-project-parser - Search and extract data from Burp Suite project files
• trailofbits/constant-time-analysis - Detect compiler-induced timing side-channels in crypto code
• trailofbits/culture-index - Index and search culture documentation
• trailofbits/differential-review - Security-focused diff review with git history analysis
• trailofbits/dwarf-expert - DWARF debugging format expertise
• trailofbits/entry-point-analyzer - Identify state-changing entry points in smart contracts
• trailofbits/fix-review - Verify fix commits address audit findings without new bugs
• trailofbits/property-based-testing - Property-based testing for multiple languages and smart contracts
• trailofbits/semgrep-rule-creator - Create and refine Semgrep rules for vulnerability detection
• **[trailofbits/sharp-edges](https://github.com/trailofb