Transmission MCP Server

Model Context Protocol (MCP) server for the Transmission BitTorrent client. This server provides comprehensive tools to manage torrents, control the Transmission daemon, and monitor downloads through a standardized MCP interface.

Features

• Torrent Management: Add, remove, pause, resume, and verify torrents
• Queue Control: Manage download queue order
• Session Management: Configure Transmission daemon settings
• Real-time Monitoring: Get torrent status, statistics, and progress
• File Operations: Move torrents, check free space
• Flexible Output: Support for both human-readable Markdown and machine-readable JSON formats

Prerequisites

• Node.js 18 or higher
• Transmission daemon running locally or remotely
• Transmission RPC credentials (if authentication is enabled)

Installation

npm install
npm run build

Configuration

The server requires the Transmission daemon connection details via environment variables:

• TRANSMISSION_URL - Base URL of Transmission RPC (default: http://localhost:9091)
• TRANSMISSION_USERNAME - Username for authentication (optional)
• TRANSMISSION_PASSWORD - Password for authentication (optional)

Example:

export TRANSMISSION_URL="http://localhost:9091"
export TRANSMISSION_USERNAME="admin"
export TRANSMISSION_PASSWORD="password"

Usage

With Claude Desktop

Add to your Claude Desktop configuration:

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

{
  "mcpServers": {
    "transmission": {
      "command": "node",
      "args": ["/path/to/transmission-mcp/dist/index.js"],
      "env": {
        "TRANSMISSION_URL": "http://localhost:9091",
        "TRANSMISSION_USERNAME": "your-username",
        "TRANSMISSION_PASSWORD": "your-password"
      }
    }
  }
}

Standalone

npm start

Available Tools

Torrent Management

• transmission_add_torrent - Add torrent from magnet URI, URL, or base64-encoded .torrent file
• transmission_list_torrents - List all torrents with optional filtering
• transmission_get_torrent - Get detailed information about specific torrent(s)
• transmission_remove_torrent - Remove torrent with option to delete local files
• transmission_pause_torrent - Pause active torrent(s)
• transmission_resume_torrent - Resume paused torrent(s)
• transmission_verify_torrent - Verify torrent data integrity
• transmission_reannounce_torrent - Force tracker reannounce
• transmission_move_torrent - Move torrent to new location
• transmission_set_torrent - Update torrent settings (labels, priorities, limits)

Queue Management

• transmission_queue_move - Move torrents in download queue (top/up/down/bottom)

Session Management

• transmission_get_session - Get Transmission daemon configuration
• transmission_set_session - Update daemon settings
• transmission_get_stats - Get session statistics (current and cumulative)

Utility

• transmission_free_space - Check available disk space

Development

# Install dependencies
npm install

# Run in development mode with auto-reload
npm run dev

# Build the project
npm run build

# Clean build artifacts
npm run clean

License

MIT