LogicX MCP

Chat with Logic Pro from inside a Truce AU v2 plugin. A local Ollama model (e.g. qwen3.5) plans and runs DAW actions—tempo, tracks, MIDI, transport, mixer—through natural language.

Very Experimental ⚠️ use at your own risk!

Install

Requirements: macOS 14+, Logic Pro 12+, Ollama

ollama pull qwen3.5
./scripts/install-au.sh

Installs the AU plugin and LogicX MCP.app (companion control host). Logic control goes through that app—do not use cargo truce install alone.

System installer (.pkg):

./scripts/build-installer-pkg.sh --build --sign-plugins
sudo installer -pkg release-artefacts/LogicX-MCP-macOS-Installer.pkg -target /

Required: Accessibility & Automation

Nothing in Logic will work until this is done. The plugin inside Logic delegates control to LogicX MCP.app. That bridge reads and drives Logic’s UI via macOS permissions.

1. Accessibility

1. System Settings → Privacy & Security → Accessibility
2. Add LogicX MCP (~/Applications or /Applications) if it is missing
3. Turn LogicX MCP ON

Needed for tempo, transport, track state, and most control.

2. Automation

1. System Settings → Privacy & Security → Automation
2. Select LogicX MCP (not logicx-control-bridge—bare binaries never appear here)
3. Enable Logic Pro
4. Enable System Events

If LogicX MCP is not listed yet, run once to trigger the prompt:

~/Applications/LogicX\ MCP.app/Contents/MacOS/logicx-control-bridge

Press Ctrl+C after the dialog, then enable the toggles above.

3. Relaunch & verify

1. Quit Logic Pro (Cmd+Q) and reopen
2. Load the LogicX MCP AU and send a command, e.g. set tempo to 140
3. In chat, run logic_system → permissions. Expect:

Check	Value
accessibility	true
tempo_control_ready	true
permission_subject	"LogicX MCP"

Tempo needs Accessibility only. Track creation, MIDI import, and menu fallbacks also need Automation → System Events.

Permission or control errors? Re-check toggles for LogicX MCP, then see docs/SETUP.md (MCU ports, reinstall, debug).

Use in Logic

1. Insert LogicX MCP on any track (pass-through utility)
2. Open the plugin window
3. Ask in plain language, e.g. Make a 4-bar techno loop in A minor at 140 BPM

The agent calls built-in tools (logic_transport, logic_tracks, logic_mixer, …). Settings (⚙): Ollama URL (default http://127.0.0.1:11434) and model name.

Before testing a new build:

./scripts/reinstall-for-test.sh   # rebuild, install, restart bridge

Then quit and relaunch Logic Pro.

Developers

cargo truce run -p logicx-plugin          # standalone UI
cargo test --workspace
./scripts/test-live.sh --ignored          # Logic + Ollama (after reinstall)

Contributor notes: AGENTS.md · Full setup: docs/SETUP.md

License

Licensed under either of:

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT)

at your option.