Arr MCP Server

MCP *arr Server

MCP server for the *arr media management suite - Sonarr, Radarr, Lidarr, and Prowlarr.

Supports both local stdio mode for Claude/Codex-style clients and remote HTTP mode for hosted MCP clients such as ChatGPT connectors.

Why Use This?

• Unified media management - Control all your *arr applications from one interface
• Natural language queries - Ask about your library in plain English
• Cross-service search - Find content across TV, movies, and music simultaneously
• Download monitoring - Check queue status and progress across all services
• Calendar integration - See upcoming releases for all media types
• Configuration review - Get AI-powered suggestions for optimizing your setup
• Flexible configuration - Enable only the services you use

Features

Prerequisites

• Node.js 18+
• At least one *arr application running with API access:
  • Sonarr for TV series
  • Radarr for movies
  • Lidarr for music
  • Prowlarr for indexer management

Installation

Using npm (Recommended)

npx mcp-arr-server

Remote HTTP Mode

MCP_TRANSPORT=http PORT=3000 npx mcp-arr-server

By default the remote server listens on 127.0.0.1:3000 and serves MCP on /mcp.

Environment variables for remote mode:

• MCP_TRANSPORT=http to enable remote Streamable HTTP transport
• HOST to override the bind host (default 127.0.0.1)
• PORT to override the port (default 3000)
• MCP_PATH to override the MCP endpoint path (default /mcp)

Docker

Build locally:

docker build -t mcp-arr .

Run in local stdio mode:

docker run --rm -i \
  -e SONARR_URL=http://host.docker.internal:8989 \
  -e SONARR_API_KEY=your-sonarr-api-key \
  mcp-arr

Run in remote HTTP mode:

docker run --rm -p 3000:3000 \
  -e MCP_TRANSPORT=http \
  -e HOST=0.0.0.0 \
  -e PORT=3000 \
  -e SONARR_URL=http://host.docker.internal:8989 \
  -e SONARR_API_KEY=your-sonarr-api-key \
  mcp-arr

Minimal docker-compose.yml:

services:
  mcp-arr:
    build: .
    ports:
      - "3000:3000"
    environment:
      MCP_TRANSPORT: http
      HOST: 0.0.0.0
      PORT: 3000
      SONARR_URL: http://host.docker.internal:8989
      SONARR_API_KEY: your-sonarr-api-key
      RADARR_URL: http://host.docker.internal:7878
      RADARR_API_KEY: your-radarr-api-key

From Source

git clone https://github.com/aplaceforallmystuff/mcp-arr.git
cd mcp-arr
npm install
npm run build

Configuration

Getting API Keys

Each *arr application has an API key in Settings > General > Security:

1. Open your *arr application's web interface
2. Go to Settings > General
3. Find the API Key under the Security section
4. Copy the API key for use in configuration

For Claude Desktop

Add to your Claude Desktop config file:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "arr": {
      "command": "npx",
      "args": ["-y", "mcp-arr-server"],
      "env": {
        "SONARR_URL": "http://localhost:8989",
        "SONARR_API_KEY": "your-sonarr-api-key",
        "RADARR_URL": "http://localhost:7878",
        "RADARR_API_KEY": "your-radarr-api-key",
        "LIDARR_URL": "http://localhost:8686",
        "LIDARR_API_KEY": "your-lidarr-api-key",
        "PROWLARR_URL": "http://localhost:9696",
        "PROWLARR_API_KEY": "your-prowlarr-api-key"
      }
    }
  }
}

For Claude Code

Add to ~/.claude.json:

{
  "mcpServers": {
    "arr": {
      "command": "npx",
      "args": ["-y", "mcp-arr-server"],
      "env": {
        "SONARR_URL": "http://localhost:8989",
        "SONARR_API_KEY": "your-sonarr-api-key",
        "RADARR_URL": "http://localhost:7878",
        "RADARR_API_KEY": "your-radarr-api-key"
      }
    }
  }
}

Note: Only configure the services you have running. The server automatically detects which services are available based on the environment variables you provide.

TRaSH-only mode: if you don’t configure any *arr services, the server still starts and exposes the TRaSH Guides reference tools plus generic search and fetch.

ChatGPT / Remote MCP

To use mcp-arr with ChatGPT, run the server in remote HTTP mode on a reachable host and connect ChatGPT to the /mcp endpoint.

The server now exposes the generic search and fetch tools expected by ChatGPT-style remote MCP integrations:

• search discovers matching *arr media and TRaSH profiles
• fetch returns structured detail for a selected search result

The existing service-specific tools remain available for richer local or power-user workflows.

Usage Examples

Library Management

• "Show me all my TV series"
• "What movies do I have in Radarr?"
• "List all artists in my music library"

Searching & Adding Content

• "Search for sci-fi shows on Sonarr"
• "Find action movies from the 90s"
• "Add this show to my TV library"
• "Add that movie to Radarr"
• "Search for jazz albums and add this artist"
• "Add this movie with my '4k' tag"
• "What tags do I have in Sonarr?"

Download Queue

• "What's downloading right now?"
• "Check the Sonarr queue"
• "Show Radarr download progress"

Upcoming Releases

• "What TV episodes are coming this week?"
• "Show upcoming movie releases"
• "Any new albums coming out this month?"

Downloading Content

• "What episodes of this show am I missing?"
• "Download the missing episodes for that series"
• "Search for this specific movie"
• "Grab that album I'm missing"

Indexer Management

• "Are my indexers healthy?"
• "How are my indexers performing?"
• "Test all my Prowlarr indexers"

Configuration Review

• "Review my Sonarr setup and suggest improvements"
• "Show me my quality profiles in Radarr"
• "Are there any health issues with my Lidarr?"
• "What naming convention am I using for TV shows?"
• "Help me understand my quality profiles - why am I not getting 4K?"
• "Check my download client configuration"
• "How much free space do I have on my root folders?"

Cross-Service

• "Check status of all my *arr services"
• "Search for 'comedy' across all services"

Available Tools

General Tools

Sonarr Tools (TV)

Radarr Tools (Movies)

Lidarr Tools (Music)

Prowlarr Tools (Indexers)

Configuration Review Tools

These tools are available for Sonarr, Radarr, and Lidarr. Replace {service} with the service name (e.g., sonarr_get_quality_profiles).

The {service}_review_setup tool returns all configuration in a single call, enabling natural language conversations about optimizing your setup. Claude can analyze your quality profiles, suggest improvements, explain why certain content isn't being grabbed, and help configure complex settings like custom formats.

⚠️ Disclaimer: The configuration review tools provide read-only access to your *arr settings. Any changes to your configuration must be made directly in the *arr application interfaces. The AI's suggestions are recommendations only - always back up your configuration before making significant changes. The maintainers are not responsible for any configuration changes, data loss, or other issues that may arise from following AI-generated recommendations.

TRaSH Guides Tools

Access community-curated quality profiles, custom formats, and naming conventions from TRaSH Guides directly through Claude or ChatGPT. These tools work without any *arr configuration - they fetch reference data from the TRaSH Guides GitHub repository.

Example usage:

• "What quality profiles does TRaSH recommend for 4K movies?"
• "Show me the remux-web-1080p profile details"
• "Compare my Radarr profile 4 against the TRaSH uhd-bluray-web profile"
• "What naming convention should I use for Plex?"
• "List HDR-related custom formats for Radarr"

Data is cached for 1 hour to minimize GitHub API calls.

Development

# Watch mode for development
npm run watch

# Build TypeScript
npm run build

# Run locally
SONARR_URL="http://localhost:8989" SONARR_API_KEY="your-key" node dist/index.js

Troubleshooting

"No *arr services configured"

Ensure you have set at least one pair of URL and API_KEY environment variables:

SONARR_URL="http://localhost:8989"
SONARR_API_KEY="your-api-key"

"API error: 401 Unauthorized"

The API key is incorrect. Verify it in your *arr application under Settings > General > Security.

"fetch failed" or "ECONNREFUSED"

The *arr application is not running or the URL is incorrect. Verify:

• The application is running
• The URL and port are correct
• There's no firewall blocking the connection

"Sonarr/Radarr/etc not configured"

You tried to use a tool for a service that isn't configured. Add the corresponding URL and API_KEY environment variables.

License

MIT - see LICENSE for details.

Links

• Servarr Wiki - Documentation for all *arr applications
• TRaSH Guides - Quality profiles, custom formats, and setup guides
• Sonarr API Docs
• Model Context Protocol
• GitHub Repository