SiteFetch MCP Server

A Model Context Protocol (MCP) server that fetches entire websites and provides their content to Large Language Models like Claude.

Features

• Easy Website Capture: Simply specify a URL to capture an entire website and add it to Claude's context
• Caching System: Downloaded sites are stored in ~/.cache/sitefetch for efficient reuse
• MCP Resource Integration: Captured content is provided as MCP resources for LLM context
• Tool Operations: Supports site fetching, cache management, and listing of available sites

Installation

# Install dependencies
npm install

# Compile TypeScript
npm run build

Configuration

To use with Claude Desktop, add this server to your configuration file:

1. Open your Claude Desktop config file:

   • macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
   • Windows: %APPDATA%\Claude\claude_desktop_config.json

2. Add the following configuration:

{
  "mcpServers": {
    "sitefetch": {
      "command": "node",
      "args": ["/absolute/path/to/sitefetch-mcp/build/index.js"]
    }
  }
}

3. Restart Claude Desktop.

Usage

Fetching a Website

In Claude Desktop, make a request like:

"Please fetch https://example.com and analyze its content"

Claude will use the fetch-site tool to retrieve the website content:

Executing fetch-site tool with parameters:
{
  "url": "https://example.com",
  "forceRefresh": false
}

Available Tools

fetch-site

Retrieves website content and stores it as a resource.

Parameters:

• url: The URL of the website to fetch (required)
• forceRefresh: Whether to force update the cache (optional, defaults to false)

list-sites

Displays a list of all fetched websites.

clear-cache

Removes all cached website data.

Resource Access

Fetched website content is accessible via the following URI:

sitefetch://{encodedUrl}

Where {encodedUrl} is the URL-encoded address of the website.

How It Works

1. When the fetch-site tool is called, it uses the sitefetch library to capture the specified website
2. The content is stored in the ~/.cache/sitefetch directory
3. The content is provided as an MCP resource with the URI sitefetch://{encodedUrl}
4. Claude can reference this resource and include it in its context as needed

File Structure

• ~/.cache/sitefetch/*.txt: Cached website content
• ~/.cache/sitefetch/sitefetch_metadata.json: Metadata for cached websites

Troubleshooting

Website Fetching Fails

• Check your internet connection
• Verify the URL is correct
• Use the list-sites tool to check already fetched sites
• Try clearing the cache with the clear-cache tool and retry

Cache Issues

• Ensure the ~/.cache/sitefetch directory exists and you have write permissions
• Verify you have sufficient disk space

Dependencies

• @modelcontextprotocol/sdk: Implementation of the MCP protocol
• sitefetch: Tool for fetching entire websites
• zod: Type validation library

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Note for developers: This project uses the Model Context Protocol to provide additional context to LLMs like Claude. For more information, refer to the MCP documentation.