DocsFetcher

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

- 🌐 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
- Open Claude Desktop → Settings → Developer
- Click "Edit Config" and add:

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

- Open Cursor IDE → Settings → MCP -> Add New MCP Servier
- Add:

Name: docsFetcher Command: npx -y @smithery/cli@latest run @cdugo/mcp-get-docs --config "{}"

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:

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

🚀 DocsFetcher MCP Server running! 📋 Ready to fetch documentation

- fetch-url-docs: 🔗 Fetch docs from a specific URL
- fetch-package-docs: 📦 Fetch docs for a package with optional language specification
- fetch-library-docs: 🧠 Smart tool that works with either package name or URL
- fetch-multilingual-docs: 🌍 Fetch docs for a package across multiple language ecosystems
- summarize-library-docs: 📚 Create a comprehensive library summary
- explain-dependency-error: 🐛 Generate dependency error explanations

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

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

- "@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']"

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

- 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

This is a web browser that enables your coding agent, such as Claude Code, to visit websites on your behalf and assist you in identifying bugs or creating UI test cases.

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