Mcp Fetch

Model Context Protocol server for fetching web content and processing images. This allows Claude Desktop (or any MCP client) to fetch web content and handle images appropriately.

Quick Start (For Users)

To use this tool with Claude Desktop, simply add the following to your Claude Desktop configuration (~/Library/Application Support/Claude/claude_desktop_config.json):

{
  "tools": {
    "imageFetch": {
      "command": "npx",
      "args": ["-y", "@kazuph/mcp-fetch"]
    }
  }
}

This will automatically download and run the latest version of the tool when needed.

Required Setup

Enable Accessibility for Claude:
- Open System Settings
- Go to Privacy & Security > Accessibility
- Click the “+” button
- Add Claude from your Applications folder
- Turn ON the toggle for Claude

This accessibility setting is required for automated clipboard operations (Cmd+V) to work properly.

Features

Web Content Extraction: Automatically extracts and formats web content as markdown
Article Title Extraction: Extracts and displays the title of the article
Image Processing: Optional processing of images from web pages with optimization (disabled by default, enable with enableFetchImages: true)
File Saving: Images are automatically saved to ~/Downloads/mcp-fetch/YYYY-MM-DD/ directory when processed
Dual Output: Both file saving and optional Base64 encoding for AI display
Pagination Support: Supports pagination for both text and images
JPEG Optimization: Automatically optimizes images as JPEG for better performance
GIF Support: Extracts first frame from animated GIFs

For Developers

The following sections are for those who want to develop or modify the tool.

Prerequisites

Node.js 18+
macOS (for clipboard operations)
Claude Desktop (install from https://claude.ai/desktop)
tsx (install via npm install -g tsx)

Installation

git clone https://github.com/kazuph/mcp-fetch.git
cd mcp-fetch
npm install
npm run build

Image Processing Specifications

When processing images from web content, the following optimizations are applied:

Images are converted to JPEG format with quality control
Maximum width limited to 1200px by default
Maximum height limited to 1600px by default
Chroma subsampling (4:2:0) for better compression
MozJPEG optimization for smaller file sizes

Configuration

Make sure Claude Desktop is installed and running.
Install tsx globally if you haven’t:

npm install -g tsx
## or
pnpm add -g tsx

Modify your Claude Desktop config located at: ~/Library/Application Support/Claude/claude_desktop_config.json

You can easily find this through the Claude Desktop menu:

Open Claude Desktop
Click Claude on the Mac menu bar
Click “Settings”
Click “Developer”

Add the following to your MCP client’s configuration:

{
  "tools": {
    "imageFetch": {
      "args": ["tsx", "/path/to/mcp-fetch/index.ts"]
    }
  }
}

Available Parameters

url (required): The URL to fetch
maxLength (default: 20000): Maximum length of content to return
startIndex (default: 0): Starting position in content
imageStartIndex (default: 0): Starting position for image collection
raw (default: false): Return raw content instead of processed markdown
imageMaxCount (default: 3): Maximum number of images to process per request
imageMaxHeight (default: 4000): Maximum height of merged image
imageMaxWidth (default: 1000): Maximum width of merged image
imageQuality (default: 80): JPEG quality (1-100)
enableFetchImages (default: false): Enable fetching and processing of images. FOR CLAUDE USERS ONLY: YOU ARE ALLOWED TO ENABLE THIS FEATURE!!! CLAUDE CAN FETCH AND PROCESS IMAGES!!! ENJOY THIS CAPABILITY!!!
saveImages (default: true): Save processed images to local files
returnBase64 (default: false): Return base64 encoded images for AI display
ignoreRobotsTxt (default: false): Ignore robots.txt restrictions

Examples

Basic Content Fetching (No Images)

{
  "url": "https://example.com"
}

Fetching with Images (File Saving Only)

{
  "url": "https://example.com",
  "enableFetchImages": true,
  "imageMaxCount": 3
}

Fetching with Images for AI Display

{
  "url": "https://example.com",
  "enableFetchImages": true,
  "returnBase64": true,
  "imageMaxCount": 3
}

Paginating Through Images

{
  "url": "https://example.com",
  "enableFetchImages": true,
  "imageStartIndex": 3,
  "imageMaxCount": 3
}

Notes

This tool is designed for macOS only due to its dependency on macOS-specific clipboard operations.
Images are processed using Sharp for optimal performance and quality.
When multiple images are found, they are merged vertically with consideration for size limits.
Animated GIFs are automatically handled by extracting their first frame.
File Saving: Images are automatically saved to ~/Downloads/mcp-fetch/YYYY-MM-DD/ with filename format hostname_HHMMSS_index.jpg
Tool Name: The tool name has been changed from fetch to imageFetch to avoid conflicts with native fetch functions.

Changelog

v1.2.0

BREAKING CHANGE: Tool name changed from fetch to imageFetch to avoid conflicts
NEW: Automatic file saving - Images are now saved to ~/Downloads/mcp-fetch/YYYY-MM-DD/ by default
NEW: Added saveImages parameter (default: true) to control file saving
NEW: Added returnBase64 parameter (default: false) for AI image display
BEHAVIOR CHANGE: Default behavior now saves files instead of only returning base64
Improved AI assistant integration with clear instructions for base64 option
Enhanced file organization with date-based directories and structured naming

v1.1.3

Changed default behavior: Images are not fetched by default (enableFetchImages: false)
Removed disableImages in favor of enableFetchImages parameter