mrinkl.github.io
You play. Your agent arranges. A four-track loop sequencer that exposes its state as WebMCP tools, so ChatGPT or Chrome can add drums, chords and bass under what you just played — and ask your ears…
First seen 2026-11-05 · Last seen 2026-11-05 · Source: webmcp.com
Answer 2 · Act 13 · Transact 0 · Score: Not yet scored
Tool inspector
audition
Play the human 2 or 3 variants (progression, rhythm, bass pattern, drum density, tempo, swing) in the tab and wait for them to keep one; the pick is applied as one undoable action. Use when the human asks to hear or compare options, or you cannot pick between two ideas by theory. Waits up to wait_seconds, then returns awaiting_human, card open.
Page: /bandmate/
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
question |
string | no | Question shown above the options, up to 120 characters, e.g. "Walking or octave bass?". |
options |
array | yes | 2 or 3 variants to compare. Each has a label, an optional why, and the changes it applies. |
wait_seconds |
integer | no | How long to wait for the human to choose, 5 to 60 seconds. Default 25. |
Raw JSON schema
{
"type": "object",
"properties": {
"question": {
"type": "string",
"maxLength": 120,
"description": "Question shown above the options, up to 120 characters, e.g. \"Walking or octave bass?\"."
},
"options": {
"type": "array",
"minItems": 2,
"maxItems": 3,
"description": "2 or 3 variants to compare. Each has a label, an optional why, and the changes it applies.",
"items": {
"type": "object",
"description": "One variant the human can preview and keep.",
"properties": {
"label": {
"type": "string",
"minLength": 1,
"maxLength": 40,
"description": "Short name on the button, 1 to 40 characters, e.g. \"Walking\"."
},
"why": {
"type": "string",
"maxLength": 80,
"description": "One-line reason to consider it, up to 80 characters."
},
"changes": {
"type": "object",
"description": "What this variant changes versus the current session. Omitted fields stay as they are.",
"properties": {
"progression": {
"type": "array",
"description": "Chord progression, 1 to 4 chords (numerals or names), written to the chords track.",
"minItems": 1,
"maxItems": 4,
"items": {
"type": "string",
"minLength": 1,
"maxLength": 12,
"description": "One chord as a Roman numeral (i, VI, bVII, V7, iiø7) or a chord name (Am, Fmaj7, G7, Bb)."
}
},
"rhythm": {
"type": "string",
"enum": [
"pad",
"stab",
"arp",
"pulse",
"offbeat"
],
"description": "Chord rhythm: pad, stab, arp, pulse or offbeat."
},
"bass_pattern": {
"type": "string",
"enum": [
"root",
"root_fifth",
"octave",
"walking",
"follow_kick"
],
"description": "Bass pattern: root, root_fifth, octave, walking or follow_kick."
},
"drum_density": {
"type": "string",
"enum": [
"sparse",
"medium",
"busy"
],
"description": "Drum density: sparse, medium or busy."
},
"tempo": {
"type": "integer",
"minimum": 60,
"maximum": 180,
"description": "Tempo in BPM, 60 to 180."
},
"swing": {
"type": "integer",
"minimum": 0,
"maximum": 60,
"description": "Swing amount, 0 to 60."
}
},
"required": [],
"additionalProperties": false
}
},
"required": [
"label",
"changes"
],
"additionalProperties": false
}
},
"wait_seconds": {
"type": "integer",
"minimum": 5,
"maximum": 60,
"default": 25,
"description": "How long to wait for the human to choose, 5 to 60 seconds. Default 25."
}
},
"required": [
"options"
],
"additionalProperties": false
}
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