Skill Library
MCP server providing on-demand skill loading for AI coding assistants
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Skill Library MCP
15,000+ ready-to-use skills for AI coding assistants, served on demand via MCP.
An MCP server that provides on-demand skill loading for AI coding assistants. Instead of stuffing your system prompt with every skill you might need, this server indexes 15,000+ skills and serves only the ones relevant to your current task β keeping context windows lean and responses focused.
Why?
- 15,000+ skills covering frontend, backend, DevOps, security, testing, databases, AI/ML, automation, and more
- On-demand loading β skills are fetched only when needed, not crammed into every conversation
- IDF-weighted search β finds the right skill even from natural language queries like "help me debug a memory leak"
- Browse by category β 13 categories to discover skills you didn't know existed
- Works with any MCP-compatible tool β Claude Code, Cursor, Windsurf, VS Code, Claude Desktop, and others
- Claude Code plugin β one-command install with
claude plugin install - Zero config β run with
npx, no setup needed
Quick Start
Claude Code Plugin (Recommended)
Add the marketplace source, then install the plugin:
claude plugin marketplace add https://github.com/modbender/skill-library-mcp.git --scope user
claude plugin install skill-library --scope user
The MCP server starts automatically when Claude Code launches. No manual configuration needed.
Claude Code (MCP Server)
claude mcp add skill-library --scope user -- npx -y skill-library-mcp
MCP Server (Other Tools)
Claude Desktop
Add to your claude_desktop_config.json (location varies by OS):
{
"mcpServers": {
"skill-library": {
"command": "npx",
"args": ["-y", "skill-library-mcp"]
}
}
}
Cursor
Add to .cursor/mcp.json (project) or ~/.cursor/mcp.json (global):
{
"mcpServers": {
"skill-library": {
"command": "npx",
"args": ["-y", "skill-library-mcp"]
}
}
}
Windsurf
Add to ~/.codeium/windsurf/mcp_config.json:
{
"mcpServers": {
"skill-library": {
"command": "npx",
"args": ["-y", "skill-library-mcp"]
}
}
}
VS Code (Copilot)
Add to .vscode/mcp.json:
{
"servers": {
"skill-library": {
"command": "npx",
"args": ["-y", "skill-library-mcp"]
}
}
}
Manual installation
git clone https://github.com/modbender/skill-library-mcp
cd skill-library-mcp
pnpm install
pnpm build
Then point your MCP config to the built binary:
{
"mcpServers": {
"skill-library": {
"command": "node",
"args": ["/path/to/skill-library-mcp/dist/index.js"]
}
}
}
Tools
search_skill
Search for skills by keyword. Returns a ranked list of matching skill names and descriptions.
search_skill({ query: "react patterns" })
load_skill
Load the full content of a skill by name. Optionally includes resource files.
load_skill({ name: "brainstorming", include_resources: true })
list_categories
Browse all skill categories with counts and examples. Use to discover skills before searching.
list_categories()
Skill Categories
The library includes 15,000+ skills across 13 categories:
| Category | Examples |
|---|---|
| Frontend | React patterns, Angular, Vue, Svelte, Next.js, Tailwind, accessibility |
| Backend | Node.js, FastAPI, Django, NestJS, Express, GraphQL, REST API design |
| AI & LLM | LLM app dev, RAG implementation, agent patterns, prompt engineering, embeddings |
| DevOps & Infra | Terraform, Kubernetes, Docker, AWS, GCP, Azure, CI/CD |
| Data & Databases | PostgreSQL, MongoDB, Redis, SQL optimization, ETL pipelines, analytics |
| Security | Penetration testing, OWASP, threat modeling, vulnerability scanning, encryption |
| Testing | TDD workflows, Playwright, Vitest, Jest, E2E testing patterns |
| Mobile | React Native, Flutter, iOS, Android, Expo |
| Automation | Workflow automation, n8n, Zapier, web scraping, bots |
| Python | Django, Flask, FastAPI, pandas, Python tooling |
| TypeScript & JS | TypeScript, JavaScript, Deno, Bun |
| Architecture | Microservices, system design, design patterns, monorepos |
| Other | Hundreds of specialized and niche skills |
Skill Format
Skills are directories containing a SKILL.md file with YAML frontmatter:
---
name: my-skill
description: What this skill does
---
# My Skill
Skill content here...
Skills can optionally include a resources/ directory with additional .md files that are appended when include_resources: true is set.
Contributing
Contributions are welcome! To add a new skill:
- Create a directory under
data/with your skill name - Add a
SKILL.mdfile with YAML frontmatter (name,description) - Run
pnpm dedupto check for duplicates - Submit a PR
Development
pnpm install # Install dependencies
pnpm test # Run tests
pnpm build # Build to dist/
pnpm dev # Run server locally
pnpm dedup # Check for duplicate skills
pnpm validate-skills # Validate data/ directory structure
pnpm fix-skills # Fix broken skills (dry run by default)
pnpm clean-skills # Remove invalid skill dirs (dry run by default)
make ci # Run test + validate + build
Third-Party Content
This project includes skills from openclaw/skills, licensed under the MIT License. See THIRD_PARTY_NOTICES.md for details.
