📚 DocsFetcher MCP Server

An MCP server that fetches package documentation from multiple language ecosystems for LLMs like Claude without requiring API keys.

✨ Features

• 🌐 Supports multiple programming languages (JavaScript, Python, Java, .NET, Ruby, PHP, Rust, Go, Swift)
• 📦 Fetches documentation for packages by name or URL
• 🔍 Crawls documentation sites to extract comprehensive information
• 📄 Extracts README, API docs, code examples, and repository info
• 🧠 Provides structured data for LLM summarization
• 💬 Includes specialized prompts for documentation analysis
• 🔑 No API key required - works natively with Claude Desktop and Cursor IDE

🚀 Installation

Using Smithery Deployment

The DocsFetcher MCP Server is deployed on Smithery! You can use it directly without any installation:

1. Configure Claude Desktop or Cursor IDE to use the Smithery deployment (see configuration sections below)
2. Start using the tools in your Claude conversations

Using npm

The easiest way to install the DocsFetcher MCP Server is via npm:

# Install globally
npm install -g @cdugo/docs-fetcher-mcp

# Run the installation script to configure Claude Desktop and/or Cursor IDE
docs-fetcher-mcp-install

Manual Installation

Prerequisites

• 📋 Node.js 18 or later

git clone https://github.com/cdugo/package-documentation-mcp
cd package-documentation-mcp
npm install
npm run build

🏃‍♂️ Running Locally

Once installed, you can run the server locally with:

# From the project root directory
npm start

For development with auto-restart on file changes:

npm run dev

The server will start on the default port (usually 3000). You should see output like:

🚀 DocsFetcher MCP Server running!
📋 Ready to fetch documentation

To specify a custom port:

PORT=8080 npm start

⚙️ Configuration

Claude Desktop

1. Open Claude Desktop → Settings → Developer
2. Click "Edit Config" and add:

{
  "mcpServers": {
    "docsFetcher": {
      "command": "npx",
      "args": [
        "-y",
        "@smithery/cli@latest",
        "run",
        "@cdugo/mcp-get-docs",
        "--config",
        "'{}'"
      ]
    }
  }
}

Cursor IDE Configuration

1. Open Cursor IDE → Settings → MCP -> Add New MCP Servier Add: Name: docsFetcher Command: npx -y @smithery/cli@latest run @cdugo/mcp-get-docs --config "{}"

## 🛠️ Available Tools

1. **fetch-url-docs**: 🔗 Fetch docs from a specific URL
2. **fetch-package-docs**: 📦 Fetch docs for a package with optional language specification
3. **fetch-library-docs**: 🧠 Smart tool that works with either package name or URL
4. **fetch-multilingual-docs**: 🌍 Fetch docs for a package across multiple language ecosystems

## 📝 Available Prompts

1. **summarize-library-docs**: 📚 Create a comprehensive library summary
2. **explain-dependency-error**: 🐛 Generate dependency error explanations

## 💡 Example Queries

### Basic Library Information

- "What is Express.js and how do I use it?"
- "Tell me about the React library"
- "How do I use requests in Python?"

### Multi-language Support

- "Show me documentation for lodash in JavaScript"
- "Compare pandas in Python and data.table in R"

### Using Tools

- "@fetch-package-docs with packageName='express' and language='javascript'"
- "@fetch-package-docs with packageName='requests' and language='python'"
- "@fetch-multilingual-docs with packageName='http' and languages=['javascript', 'python', 'rust']"

### Using Prompts

- "@summarize-library-docs with libraryName='express'"
- "@explain-dependency-error with packageName='dotenv'"

## ❓ Troubleshooting

### Local Installation

- **Server not showing up**: ✅ Verify absolute path in configuration
- **Connection errors**: 🔄 Restart Claude Desktop or Cursor IDE
- **Fetch failures**: ⚠️ Some packages may have non-standard documentation
- **Language support**: 🌐 If a language isn't working, try using the package's direct URL

## 📄 License

MIT