Lyngdorf MCP Server

DISCLAIMER: This project is an independent, community-developed tool and is NOT affiliated with, endorsed by, or supported by Lyngdorf Audio. Use at your own risk. For official Lyngdorf products and support, visit lyngdorf.steinwaylyngdorf.com.

CODE GENERATION: Most of this codebase was generated using Claude Code, Anthropic's AI coding agent. The implementation demonstrates Claude Code's ability to create production-ready software from high-level requirements.

A Model Context Protocol (MCP) server for controlling Lyngdorf Audio devices (TDAI, MP, and CD series) via TCP. Features automatic device discovery, comprehensive control, volume safety, and built-in documentation.

Features

• 🔍 Auto-Discovery: Automatically finds and connects to Lyngdorf devices on startup
• 🛡️ Volume Safety: Two-tier safety system (Warning & Hard Limit) to protect your ears and equipment
• 🧠 Smart Capabilities: Automatically detects device model and prevents unsupported commands (e.g., no streaming on TDAI-2170)
• 🎵 43 Control Tools: Power, volume, source, RoomPerfect, voicing, tone controls, playback, and streaming
• 📚 Knowledge Base: Built-in manual data and command references for multiple models
• 🔄 Auto-Reconnect: Maintains connection with automatic recovery
• 🌐 Multi-Device: Supports TDAI, MP, and CD series with seamless device switching

Supported Devices

The server includes specific capability profiles for:

• TDAI Series: 1120, 2170, 2190, 2210, 3400
• MP Series: 40, 50, 60
• CD Series: CD-1

Unknown devices are supported with a generic profile assuming full capabilities.

Installation

Prerequisites

• Node.js 22+
• npm or yarn

Install from npm

npm install -g lyngdorf-mcp

Or use npx without installing:

npx lyngdorf-mcp

Install from Source

git clone <repository-url>
cd lyngdorf-mcp
npm install
cp .env.example .env
npm run build

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

Using npm package (recommended):

{
  "mcpServers": {
    "lyngdorf": {
      "command": "npx",
      "args": ["lyngdorf-mcp"],
      "env": {
        "VOLUME_WARNING_THRESHOLD": "-20",
        "VOLUME_HARD_LIMIT": "-10"
      }
    }
  }
}

Using local installation:

{
  "mcpServers": {
    "lyngdorf": {
      "command": "node",
      "args": ["/absolute/path/to/lyngdorf-mcp/dist/index.js"],
      "env": {
        "VOLUME_WARNING_THRESHOLD": "-20",
        "VOLUME_HARD_LIMIT": "-10"
      }
    }
  }
}

Configuration (Environment Variables)

| Variable | Default | Description | |----------|---------|-------------| | LYNGDORF_IP | (Auto) | Manually specify device IP if auto-discovery fails | | VOLUME_WARNING_THRESHOLD | -15 | Volume level (dB) that triggers a warning requiring user confirmation | | VOLUME_HARD_LIMIT | -10 | Maximum volume level (dB) that cannot be exceeded via tools |

How It Works

On startup, the server:

1. Auto-discovers all Lyngdorf devices on your network via mDNS
2. Auto-connects if exactly one device is found
3. Lists devices if multiple are found (use listDevices and selectDevice tools)

No manual configuration needed! Just start Claude Desktop and ask:

"What's my current volume?"

Available Tools (43)

Power Control

• powerOn, powerOff, togglePower
• checkPowerState - Check if device is active or in standby

Volume Control (Safety Protected)

• setVolume - Set volume (with safety checks)
• volumeUp, volumeDown - Adjust by 0.5dB
• getVolume - Get current level
• mute, unmute

Audio & Tone

• setBass, getBass - Bass gain control
• setTreble, getTreble - Treble gain control
• setBalance, getBalance - L/R Balance
• setBassFrequency, getBassFrequency
• setTrebleFrequency, getTrebleFrequency

Input & Source

• setSource, getSource
• listSources - List all available inputs

RoomPerfect & Voicing

• setRoomPerfectFocus, setRoomPerfectGlobal, getRoomPerfect
• listRoomPerfectPositions - List available focus positions
• setVoicing, nextVoicing, previousVoicing, getVoicing
• listVoicings - List available voicing presets

Playback & Streaming (Model Dependent)

• play, pause, stop, next, previous
• getStreamType - Detect current stream (Spotify, Roon, AirPlay, etc.)

Device Management

• discoverDevices, listDevices, selectDevice
• getStatus - Comprehensive device status

Available Resources

Access manuals and documentation as MCP resources:

• lyngdorf://manual/{model}/commands - Command reference
• lyngdorf://manual/{model}/owners/index - Owner's Manual TOC
• lyngdorf://manual/{model}/owners/{section} - Specific manual sections
• lyngdorf://search?q={query} - Search all manuals

Supported Manuals: TDAI-1120, TDAI-2170, TDAI-2210, TDAI-3400

Troubleshooting

No Devices Found

1. Ensure device is powered on and connected to the network.
2. Check if you are on the same subnet.
3. Try setting LYNGDORF_IP manually.

Volume Limit Errors

If you see "Volume -XdB exceeds warning threshold...", simply ask the user for confirmation to proceed, or lower the requested volume.

Development

Run in Development Mode

npm run dev

Test

npm test

Coverage: 125 passing tests covering tools, transport, discovery, and capabilities.

Project Structure

lyngdorf-mcp/
├── src/
│   ├── index.ts           # Server entry & discovery
│   ├── tools.ts           # Tool definitions & handlers
│   ├── capabilities.ts    # Device capability matrix
│   ├── transport.ts       # TCP communication
│   └── ...
├── docs/kb/               # JSON Knowledge Base
└── dist/                  # Compiled output

License

MIT

Disclaimer

This is an independent project developed by the community. It is NOT affiliated with, endorsed by, or supported by Lyngdorf Audio A/S or Steinway Lyngdorf.