Setloom — Development skill for Claude Code

Setloom

Music production has a gatekeeper: the interface. The piano roll, the plug-in maze, the mixing-desk vocabulary: decades of craft stacked between you and the idea already playing in your head. Setloom removes the gatekeeper.

You bring taste. The agent brings labor. It writes each track's source, renders the audition, and inspects the result; you listen and say what's wrong. You never open a DAW, never operate a plug-in, never learn what a sidechain is unless you want to. The only skills required are the ones you already have: hearing a track, and knowing whether it moves you.

Setloom, by AppAutomaton, is an open-source, keyboard-first harness for producing club tracks and DJ sets. It is built around one division of labor: **the human is the taste owner; the agent does everything else.** It is honest about where that frontier sits today.

How it works

Three roles, one loop.

• You, the taste owner. You listen and give direction in plain language: the bass is too busy before the break; make the arp darker. You make every musical decision. Nothing is final until you say so.
• The agent, the producer. It turns your direction into concrete source changes: writes the track's own code, renders a fresh audition, plays it back, and reports the tradeoffs. It proposes; it never decides for you.
• The harness, the studio. A small, unopinionated toolkit that scaffolds tracks, renders, inspects audio, and keeps the work reproducible. It owns technical hygiene only. It composes nothing.

The listening gate is no-click: the agent prepares and plays the audio, and you only listen and type.

What you can do

• Scaffold a new track (spec, runnable assembler, and listening notes) from a single command.
• Render track harnesses from editable source files.
• Export and inspect MIDI.
• Inspect audio from the command line: waveform, spectrum, spectrogram, stereo field, and A/B comparisons.
• Re