Maru

Make instruments, effects and musical tools with your coding agent. Works with Claude Code, Codex, Cursor and other agents.

Install

npx maruaudio skill install

Then describe what you want to make. Your agent handles setup and finds the right Maru tools for the job.

Try it

Ask your agent, for example:

• "Make a tape-saturation effect with drive and tone controls."
• "Build a 16-pad drum kit from this loop."
• "Turn this melody recording into MIDI."
• "Build a chord progression tool with scales and rhythm patterns."
• "Add a preset bank to my synth."

What you can make

Area	Examples
Instruments and effects	Synths, audio effects, controls and presets
Music and MIDI	Chords, scales, rhythms, sequencers and note transformations
Sounds and samples	Generated sounds, drum kits, sampler banks and audio-to-MIDI

One skill covers these workflows and reads the relevant guides as needed. Music and MIDI code uses Symbolic, included in Maru.

Use the CLI directly

npx maruaudio init my-effect --kind processor-effect --install
cd my-effect
npm run dev

Edit your project and hear the changes in the live workbench. The generated project includes instructions and scripts for checking and building it:

npm test
npm run build:vst3

Ask your agent to build and verify the format you need. Run npx maruaudio doctor if something needs setup.

Update

npx maruaudio skill update

For a user-wide install, add --global. To choose an agent, add --agent claude-code or --agent codex to the install command.

You can also install directly with npx skills add maru-audio/maru-skill. The installer currently identifies the skill as maru-agent.

Links

• Documentation
• Maru CLI and SDK
• Maru on GitHub
• Issues
• Contact

Maru is in alpha. Some workflows need sign-in or additional build tools.

License

MIT.