Moog Sub37 MCP

A Model Context Protocol (MCP) server that allows Claude and other MCP-compatible LLMs to interact with and control the Moog Sub37/Subsequent37 analog synthesizer via MIDI. This integration enables AI-assisted sound design and parameter control of this legendary Moog synthesizer.

About the Moog Sub37/Subsequent37

The Moog Sub37/Subsequent37 is a powerful analog synthesizer featuring:

• 2 oscillators with sub oscillators
• Classic Moog ladder filter
• Dual LFOs
• Extensive modulation options
• 256 preset memory
• 37-key keyboard with velocity and aftertouch
• Mono and Duo (paraphonic) modes
• Built-in arpeggiator and step sequencer

Prompt Examples

Prompt should start with "use Moog sub37 MCP to ..."

"Design a deep, resonant bass patch using the Moog filter's self-oscillation on midi channel 3"
"Create an evolving pad sound using both oscillators in Duo mode on midi channel 3"
"Program a sequence that showcases the Sub37's classic Moog lead sound on midi channel 3"
"Design a dark atmospheric sound using the Sub37's modulation capabilities on midi channel 3"
"Create a punchy bass sound perfect for techno using the multidrive circuit on midi channel 3"

Features

• [x] Complete MIDI control interface for all Sub37/Subsequent37 parameters
• [x] Support for both Sub37 and Subsequent37 models
• [x] Access to all synthesis parameters:
• Oscillator controls (waveform, pitch, sync)
• Filter controls (cutoff, resonance, envelope amount)
• Envelope generators
• LFO settings
• Modulation routing
• Arpeggiator/Sequencer parameters
• [x] Preset management
• [x] Real-time parameter automation

Demo

Watch Claude control the Moog Sub37/Subsequent37 in real-time:

coming soon

Installation and Usage

Prerequisites

• Python 3.12+
• uv for package management
• A Moog Sub37 or Subsequent37 synthesizer connected via USB
• Claude Desktop app (for full integration)

Installing Dependencies

uv is mandatory for this project. Start by installing it:

#### For macOS:

brew install uv

#### For Windows:

Follow the instructions here

Installing with Claude Desktop

To use with Claude AI, add the MCP server configuration in Claude Desktop:

⚠️ Important: You don't need to clone the repository or install the packages manually. The MCP server is published on PyPI and can be installed automatically.

Go to Claude > Settings > Developer > Edit Config > claude_desktop_config.json to include the following:

{
  "mcpServers": {
    "Sub37": {
      "command": "uvx",
      "args": ["moog-sub37-mcp"]
    }
  }
}

Implementation Details

This library leverages:

• FastMCP: For exposing synth controls to LLMs
• mido: For reliable MIDI communication with the synthesizer

Use Cases

• AI-Assisted Sound Design: Let Claude help you create new sounds and explore the synth's capabilities

Community and Support

• Join our Discord community for help and discussion
• Visit synthgenie.com for the web-based version (API key available for free on Discord)
• Report issues and contribute on GitHub

License

MIT License - See LICENSE file for details