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package-documentation-mcp

MCP.Pizza Chef: cdugo

The package-documentation-mcp is an MCP server that retrieves comprehensive documentation for software packages across multiple programming languages including JavaScript, Python, Java, .NET, Ruby, PHP, Rust, Go, and Swift. It fetches documentation by package name or URL, crawling official documentation sites to extract README files, API docs, and other relevant information. This server enables LLMs like Claude to access detailed package docs without requiring API keys, facilitating enhanced code understanding and development workflows.

Use This MCP server To

Fetch package documentation by name or URL for multiple languages Extract README and API docs from official package sites Provide LLMs with detailed package info without API keys Support multi-language development environments with unified docs access Enable real-time retrieval of package docs during coding sessions

README

πŸ“š DocsFetcher MCP Server

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

DocsFetcher Server MCP server

✨ Features

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

πŸš€ Installation

Claude Desktop

  1. Open Claude Desktop β†’ Settings β†’ 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 β†’ Settings β†’ MCP -> Add New MCP Servier
  2. Add:
    Name: docsFetcher
    Command: npx -y @smithery/cli@latest run @cdugo/mcp-get-docs --config "{}"

Prerequisites

  • πŸ“‹ Node.js 18 or later

πŸƒβ€β™‚οΈ Running Locally

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

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:

πŸš€ DocsFetcher MCP Server running!
πŸ“‹ Ready to fetch documentation

To specify a custom port:

PORT=8080 npm start

πŸ› οΈ Available Tools

  1. fetch-url-docs: πŸ”— Fetch docs from a specific URL
  2. fetch-package-docs: πŸ“¦ 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

πŸ“ Available Prompts

  1. summarize-library-docs: πŸ“š Create a comprehensive library summary
  2. explain-dependency-error: πŸ› Generate dependency error explanations

πŸ’‘ 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: βœ… Verify absolute path in configuration
  • Connection errors: πŸ”„ 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

πŸ“„ License

MIT

package-documentation-mcp FAQ

How does package-documentation-mcp fetch documentation without API keys?
It crawls official documentation sites and extracts information directly, avoiding the need for API keys.
Which programming languages does this MCP server support?
It supports JavaScript, Python, Java, .NET, Ruby, PHP, Rust, Go, and Swift.
Can this server fetch documentation using a package URL?
Yes, it can retrieve documentation by both package name and URL.
How does this MCP server benefit LLMs like Claude?
It provides LLMs with rich, structured package documentation in real-time, improving code assistance and understanding.
Is the package-documentation-mcp limited to public packages only?
It primarily fetches documentation from publicly accessible package repositories and documentation sites.
How frequently is the documentation data updated?
The server fetches live data by crawling sites on demand, ensuring up-to-date documentation.
Can this MCP server be integrated with other MCP clients or tools?
Yes, it is designed to integrate seamlessly with MCP clients and tools for enhanced developer workflows.