Elektron MCP

A Model Context Protocol (MCP) server that allows Claude and other MCP-compatible LLMs to interact with and control Elektron synthesizers via MIDI.

Features

• Complete MIDI control interface for the Elektron Digitone synthesizer
• Structured controllers for all Digitone sound engines:
  • Wavetone (waveshaping synthesis)
  • FM Tone (FM synthesis)
  • FM Drum (percussive FM synthesis)
  • Swarmer (unison/swarm synthesis)
• Comprehensive parameter control for:
  • All filter types
    • MultiMode
    • Lowpass4
    • Equalizer
    • LegacyLpHp
    • CombMinus
    • CombPlus
    • BaseWidth
  • Amplitude and envelope settings
  • Effects processing (delay, reverb, chorus, bit reduction, etc.)
  • LFOs control
• MCP server exposing all synth parameters as tools for LLMs
• Type-safe parameter validation using Pydantic
• Modular architecture for easy extension to other Elektron devices

Demo

Watch Claude control the Elektron Digitone synthesizer in real-time:

Installation and Usage

Prerequisites

• Python 3.10+
• uv for package management
• An Elektron Digitone connected via USB
• Claude Desktop app (for full integration)

Installing Dependencies

uv is mandatory for this project so start by installing it:

For macOS:

brew install uv

For Windows:

Follow the instructions here

3. Installing with Claude Desktop

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

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

{
  "mcpServers": {
    "Digitone 2": {
      "command": "uvx",
      "args": ["elektron-mcp"]
    }
  }
}

Architecture

The library is designed with a clean, object-oriented architecture:

• Base Controllers: Common functionality abstracted into base classes
• Specialized Controllers: Dedicated controllers for each synth engine and module
• MCP Tools: Direct interface between LLMs and the synth's parameters
• MIDI Interface: Reliable communication with Digitone hardware

Implementation Details

This library uses:

• FastMCP: For exposing synth controls to LLMs
• Pydantic models: For data validation, serialization, and type safety
• mido: For MIDI communication

Use Cases

• Allow Claude and other LLMs to create and modify sounds on the Digitone
• Programmatically control Digitone parameters for automated sound design
• Bridge between AI-generated music and hardware synthesis

Future Extensions

• Support for additional Elektron devices (Analog Four, Octatrack, etc.)
• Pattern sequencing and automation
• Sound preset management
• Additional synthesis parameters