Reaper Daemon MCP server

Reaper Daemon is a helper that connects an AI assistant to REAPER, the music recording and mixing program. You ask your AI to change a track, adjust a plugin, or measure the mix, and it does the work inside your open project. It is handy if you use REAPER and want an extra pair of hands for mixing or MIDI tasks.

What this MCP server does

You ask your AI to do something in your REAPER project, like lower the bass or add a plugin. The AI writes a small command file into a folder that Reaper Daemon watches. A script inside REAPER picks up that file, performs the action, and writes a result file back. The AI reads the result and tells you what happened, all inside a single undo step so you can press Ctrl+Z to revert.

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What you can do with it

• Read every plugin and setting on a track
• Change plugin values in real units like decibels
• Write automation for volume, pan, and effects
• Measure loudness and spectrum before and after a change
• Add, rename, or delete tracks
• Insert MIDI files and humanize drum parts
• Render or save your project

Try asking your AI

• “The bass is muddy around 300 Hz, pull it down.”
• “Bring the vocal down so it sits with the mix instead of on top.”
• “Tune the bass until its LUFS is down 3 dB.”
• “What plugins are on the drum bus, and what are they set to?”

What it gives back to you

You get answers in the chat, like a list of plugins and their settings, or a short report of what changed. If you ask for a measurement, it gives you numbers for loudness, spectrum, or dynamics. It can also create or change things in your project, and those changes appear in REAPER right away.

Before you start

Who it's for

Music producers, mixing engineers, and hobbyist musicians who use REAPER and want AI help with mixing or MIDI.