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
Claude Desktop
- Open Claude Desktop Settings Developer
- Click "Edit Config" and add:
Cursor IDE Configuration
- Open Cursor IDE Settings MCP -> Add New MCP Servier
- Add:
Prerequisites
- Node.js 18 or later
Running Locally
Once installed, you can run the server locally with:
For development with auto-restart on file changes:
The server will start on the default port (usually 3000). You should see output like:
To specify a custom port:
Available Tools
- 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
Available Prompts
- summarize-library-docs: Create a comprehensive library summary
- 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
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
Claude Desktop
- Open Claude Desktop Settings Developer
- Click "Edit Config" and add:
Cursor IDE Configuration
- Open Cursor IDE Settings MCP -> Add New MCP Servier
- Add:
Prerequisites
- Node.js 18 or later
Running Locally
Once installed, you can run the server locally with:
For development with auto-restart on file changes:
The server will start on the default port (usually 3000). You should see output like:
To specify a custom port:
Available Tools
- 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
Available Prompts
- summarize-library-docs: Create a comprehensive library summary
- 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