CHECK MODULE Server

A powerful Model Context Protocol (MCP) server for managing internal documentation and fetching official library documentation from the web.

License: MIT TypeScript Node MCP

🎥 Demo

https://github.com/user-attachments/assets/aec8d362-4ac3-477f-84db-fc304cd7e927

Watch CHECK-MODULE in action: fetching documentation, searching internal docs, and managing custom documentation with Claude Desktop.

🎯 Features

• 📚 Internal Documentation Management - Store, search, and manage your custom documentation
• 🌐 Web Documentation Fetching - Automatically fetch official documentation from 13+ popular libraries
• 🔍 Smart Search - Relevance-based search with category and tag filtering
• 📝 Markdown Support - Full Markdown formatting for documentation
• 🔧 MCP Tools - 6 powerful tools exposed via Model Context Protocol
• 📦 Resources - URI-based access to documentation (doc://internal/*)

📦 Installation

# Clone the repository
git clone https://github.com/muhammedehab35/CHECK-MODULE-MCP.git
cd CHECK-MODULE-MCP

# Install dependencies
npm install

# Build the project
npm run build

⚙️ Configuration

Add to your Claude Desktop config file (claude_desktop_config.json):

Windows: %APPDATA%\Claude\claude_desktop_config.json macOS/Linux: ~/.claude/claude_desktop_config.json

{
  "mcpServers": {
    "CHECK-MODULE": {
      "command": "node",
      "args": [
        "/absolute/path/to/CHECK-MODULE-MCP/dist/index.js"
      ]
    }
  }
}

Then restart Claude Desktop completely.

🚀 Usage

Internal Documentation Tools

search-docs - Search your internal documentation

Search for "authentication" in the documentation

get-doc - Get a complete document by ID

Show me the Authentication API guide

list-categories - List all documentation categories

What documentation categories are available?

add-doc - Add or update documentation

Add documentation about Redis caching with ID "redis-cache"

Web Documentation Fetching

fetch-library-docs - Fetch official documentation from the web

Use CHECK-MODULE to fetch LangGraph documentation about creating agents

list-available-libraries - Show supported libraries

What libraries can CHECK-MODULE fetch documentation for?

📚 Supported Libraries

CHECK-MODULE can automatically fetch documentation for:

• AI/ML: LangGraph, LangChain, PyTorch, TensorFlow, CrewAI
• Web Frameworks: React, Next.js, Vue, Express, FastAPI, Django
• Data Science: Pandas, NumPy

🛠️ Available Tools

Tool	Description
search-docs	Search internal documentation with filters
get-doc	Retrieve full document by ID
list-categories	List all documentation categories
add-doc	Add or update documentation
fetch-library-docs	Fetch official docs from the web
list-available-libraries	Show supported libraries

🏗️ Project Structure

CHECK-MODULE-MCP/
├── src/
│   ├── index.ts          # Main MCP server
│   ├── docStore.ts       # Documentation storage
│   ├── webFetcher.ts     # Web documentation fetcher
│   └── types.ts          # TypeScript type definitions
├── dist/                 # Compiled JavaScript (generated)
├── package.json          # Project configuration
├── tsconfig.json         # TypeScript configuration
└── README.md             # This file

🔧 Development

# Install dependencies
npm install

# Build
npm run build

# Watch mode (auto-rebuild)
npm run watch

# Run manually (for testing)
npm start

📖 Examples

Example 1: Search Internal Docs

User: Search for "deployment" in DevOps category
Claude: [Uses search-docs tool]
Found 1 result: Deployment Guide with Docker/Kubernetes instructions

Example 2: Fetch Web Documentation

User: How do I create an agent in LangGraph?
Claude: [Uses fetch-library-docs tool]
Fetches from https://langchain-ai.github.io/langgraph/
Returns: Step-by-step guide with code examples

Example 3: Add Custom Documentation

User: Add docs about our Redis caching strategy
Claude: [Uses add-doc tool]
Documentation stored with ID "redis-cache"

🎨 Customization

Adding More Libraries

Edit src/webFetcher.ts to add custom documentation sources:

const DOC_SOURCES: Record<string, string> = {
  'your-library': 'https://docs.your-library.com/',
  // ... existing libraries
};

Then rebuild: npm run build

Pre-loading Documentation

Edit src/docStore.ts in the initializeSampleDocs() method to add your initial documentation.

🐛 Troubleshooting

Server not starting

# Test the build
npm run build

# Run directly
node dist/index.js
# Should output: "CHECK-MODULE MCP Server running on stdio"

Claude doesn't see the tools

1. Check that the path in claude_desktop_config.json is absolute
2. Restart Claude Desktop completely
3. Check developer console (Ctrl+Shift+I) for errors

Web fetching not working

• Ensure you have internet connection
• Check if the library is in the supported list
• The library name must match exactly (case-insensitive)

📝 Pre-loaded Documentation

The server comes with 3 example documents:

1. Authentication API (api-auth) - JWT authentication guide
2. Database Schema (db-schema) - PostgreSQL schema reference
3. Deployment Guide (deploy-guide) - Docker/Kubernetes deployment

🔮 Roadmap

• Add more library documentation sources
• Implement persistent storage (SQLite/PostgreSQL)
• Add version history tracking
• Support for custom authentication
• REST API for external management
• Import from Markdown files
• Export documentation to various formats

🤝 Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

1. Fork the project
2. Create your feature branch (git checkout -b feature/AmazingFeature)
3. Commit your changes (git commit -m 'Add some AmazingFeature')
4. Push to the branch (git push origin feature/AmazingFeature)
5. Open a Pull Request

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

🙏 Acknowledgments

• Built with @modelcontextprotocol/sdk
• Inspired by Context7
• Uses Zod for schema validation

📞 Support

• Issues: GitHub Issues
• Documentation: MCP Documentation

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Made with ❤️ using TypeScript and MCP