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
add_notes
Use this when you know the exact notes to add to melody, bass, or chords. Note names and beat positions are validated and converted to Duet's internal ticks.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
trackId |
string | yes | — |
notes |
array | yes | — |
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": {
"trackId": {
"type": "string",
"enum": [
"melody",
"bass",
"chords"
]
},
"notes": {
"type": "array",
"minItems": 1,
"maxItems": 128,
"items": {
"type": "object",
"properties": {
"pitchName": {
"type": "string",
"minLength": 2,
"maxLength": 8
},
"startBeat": {
"type": "number",
"minimum": 0,
"maximum": 64
},
"durationBeats": {
"type": "number",
"minimum": 0.0625,
"maximum": 64
},
"velocity": {
"type": "integer",
"minimum": 1,
"maximum": 127
}
},
"required": [
"pitchName",
"startBeat",
"durationBeats"
],
"additionalProperties": false
}
},
"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": [
"trackId",
"notes"
],
"additionalProperties": false
}
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