claude-collider

Apps & Automation

Use when live coding music with SuperCollider via ClaudeCollider MCP server.

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SuperCollider Live Coding with ClaudeCollider

This skill enables live music synthesis using SuperCollider via the ClaudeCollider MCP server.

Quick Reference

Key Rules

Drums need \freq, 48 - IMPORTANT Without it, drums sound wrong
Use Pdef for rhythms - Patterns that repeat
Use Ndef for continuous - Pads, drones, textures
Symbols not strings - \kick not "kick"
Semicolons between statements - No trailing semicolon
NEVER Synth() inside Ndef - Causes infinite spawning

CC API Reference

The main entry point stored in ~cc. Access subsystems via ~cc.synths, ~cc.fx, ~cc.midi, ~cc.samples, ~cc.recorder, ~cc.state.

CC - Main Class

Method	Description
`tempo(bpm)`	Get/set tempo in BPM
`stop`	Stop all Pdefs and Ndefs
`clear`	Full reset: free all synths, patterns, effects, samples
`status`	Get formatted status string
`reboot(device, numOutputs, onComplete)`	Restart the server

~cc.synths - Synth Definitions

27+ pre-built synths with cc_ prefix.

Method	Description
`list`	Comma-separated list of synth names
`describe`	Detailed descriptions with params
`play(name, ...args)`	One-shot synth playback

Usage

~cc.synths.play(\cc_kick, \freq, 48, \amp, 0.8);

~cc.fx - Effects System

18 built-in effects with routing, chaining, and sidechaining.

Method	Description
`load(name, slot)`	Load effect (slot defaults to `fx_<name>`)
`set(slot, ...args)`	Set effect parameters
`bypass(slot, bool)`	Bypass/re-enable effect
`remove(slot)`	Remove effect
`route(source, target)`	Route Pdef/Ndef to effect
`connect(from, to)`	Chain effect output to another effect
`sidechain(name, threshold, ratio, attack, release)`	Create sidechain compressor
`routeTrigger(source, sidechainName, passthrough)`	Route trigger to sidechain
`routeToOutput(source, channels)`	Route to hardware outputs
`list`	Available effect names
`describe`	Effect descriptions with params
`status`	Current effects and routing

Usage

~cc.fx.load(\reverb);
~cc.fx.route(\bass, \fx_reverb);
~cc.fx.set(\fx_reverb, \mix, 0.5, \room, 0.9);

~cc.midi - MIDI Control

Method	Description
`listDevices`	List available MIDI devices
`connect(device, direction)`	Connect device (`\in` or `\out`)
`connectAll`	Connect all MIDI inputs
`disconnect(direction)`	Disconnect (`\in`, `\out`, or `\all`)
`play(synthName, channel, mono, velToAmp, ccMappings)`	Play synth via MIDI
`stop`	Stop current MIDI synth
`status`	Get MIDI status

Usage

~cc.midi.connectAll;
~cc.midi.play(\lead, nil, false, true, (
  1: \cutoff,                           // CC1 -> cutoff
  74: (param: \res, range: [0.1, 0.9])  // CC74 -> res with range
));

~cc.samples - Sample Management

Samples from ~/.claudecollider/samples.

Method	Description
`load(name)`	Load sample buffer into memory
`at(name)`	Get buffer (nil if not loaded)
`play(name, rate, amp)`	One-shot playback
`free(name)`	Free buffer
`reload`	Rescan directory for new files
`names`	Array of sample names
`list`	Comma-separated list

Usage

~cc.samples.load(\kick);
~cc.samples.play(\kick, 1, 0.8);
Pdef(\samp, Pbind(\instrument, \cc_sampler, \buf, ~cc.samples.at(\kick), \dur, 1)).play

~cc.recorder - Audio Recording

Records to ~/.claudecollider/recordings.

Method	Description
`start(filename)`	Start recording (auto-names if nil)
`stop`	Stop recording, returns path
`status`	Recording status
`isRecording`	Boolean

~cc.state - Bus Management

Named control/audio buses stored in current environment.

Method	Description
`bus(name, numChannels, rate)`	Get or create bus (also sets `~name`)
`setBus(name, value)`	Set bus value
`getBus(name)`	Get bus by name
`freeBus(name)`	Free bus
`clear`	Free all buses

Usage

~cc.state.bus(\cutoff, 1, \control);
~cc.state.setBus(\cutoff, 2000);
Synth(\cc_acid, [\cutoff, ~cutoff.asMap]);  // Map bus to param