duet-webmcp.vercel.app
Compose music together with AI, directly in your browser.
First seen 2026-11-05 · Last seen 2026-11-05 · Source: webmcp.com
Answer 4 · Act 14 · Transact 0 · Score: Not yet scored
Tool inspector
set_chord_progression
Use this when the person asks for a chord progression. Replaces consecutive chord slots from startBar, validates every symbol, and creates audible block or arpeggiated chord notes.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
startBar |
integer | yes | — |
chords |
array | yes | — |
voicing |
string | no | — |
mode |
string | no | draft (default): show the result as a ghost preview the person accepts or discards on the page; apply: write immediately because the person explicitly asked for that. |
expectedStateVersion |
integer | no | Optional stateVersion you last read; the call is rejected if the person changed the page since. |
Raw JSON schema
{
"type": "object",
"properties": {
"startBar": {
"type": "integer",
"minimum": 0,
"maximum": 15
},
"chords": {
"type": "array",
"minItems": 1,
"maxItems": 16,
"items": {
"type": "string",
"minLength": 1,
"maxLength": 16
}
},
"voicing": {
"type": "string",
"enum": [
"block",
"arpeggio"
]
},
"mode": {
"type": "string",
"enum": [
"draft",
"apply"
],
"description": "draft (default): show the result as a ghost preview the person accepts or discards on the page; apply: write immediately because the person explicitly asked for that."
},
"expectedStateVersion": {
"type": "integer",
"minimum": 0,
"description": "Optional stateVersion you last read; the call is rejected if the person changed the page since."
}
},
"required": [
"startBar",
"chords"
],
"additionalProperties": false
}
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