Control Lightkey on macOS via OSC from an assistant

What it does

Lets an MCP client trigger Lightkey presets and cues, a simple path to AI-assisted lighting on Mac.

How to set it up

1. In Lightkey go to Settings → External Control and check Enable OSC (default 127.0.0.1:21600 UDP).
2. Clone, npm install, npm run build.
3. Register with claude mcp add lightkey -- node <path>/dist/index.js, adding LIGHTKEY_HOST/PORT env vars for a remote Mac.

Source project: groundroot/lightkey-mcp

FAQ

What can it do?

Cues, playback, palettes, fixture overrides, master/blackout and BPM, plus raw OSC.

Language?

The README is in Korean; the commands above are the key steps.