mrinkl.github.io WebMCP Tools, Schemas & Agent Capabilities

mrinkl.github.io

live Unverified (seed import) Media & Personal 15 tools imperative implementation

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

set_groove

act imperative

Set tempo, key, mode, swing, style or metronome in one call; notes transpose to a new key unless transpose_content is false. Use when the human wants it faster, slower, in another key, more swing, or another sound (lofi, house, synthwave). Only the fields you pass change. Visible in the grid immediately; the loop keeps playing; returns undo_id.

Page: /bandmate/

Input schema

Property	Type	Required	Description
`tempo`	integer	no	Tempo in BPM, 60 to 180.
`key`	string	no	Tonic, sharps or flats: C, C#, Db, D, D#, Eb, E, F, F#, Gb, G, G#, Ab, A, A#, Bb, B. Flats are normalised to sharps.
`mode`	string	no	Scale mode: major or minor.
`swing`	integer	no	Swing amount, 0 to 60 (0 straight, 30 is a classic MPC feel, 60 heavy).
`style`	string	no	Sound preset: lofi, house or synthwave. Changes drum tables, filter, reverb and defaults.
`metronome`	boolean	no	true turns the metronome click on, false turns it off.
`transpose_content`	boolean	no	When key or mode changes: true (default) transposes existing notes, false leaves them as they are.

Raw JSON schema

{
  "type": "object",
  "properties": {
    "tempo": {
      "type": "integer",
      "minimum": 60,
      "maximum": 180,
      "description": "Tempo in BPM, 60 to 180."
    },
    "key": {
      "type": "string",
      "enum": [
        "C",
        "C#",
        "Db",
        "D",
        "D#",
        "Eb",
        "E",
        "F",
        "F#",
        "Gb",
        "G",
        "G#",
        "Ab",
        "A",
        "A#",
        "Bb",
        "B"
      ],
      "description": "Tonic, sharps or flats: C, C#, Db, D, D#, Eb, E, F, F#, Gb, G, G#, Ab, A, A#, Bb, B. Flats are normalised to sharps."
    },
    "mode": {
      "type": "string",
      "enum": [
        "major",
        "minor"
      ],
      "description": "Scale mode: major or minor."
    },
    "swing": {
      "type": "integer",
      "minimum": 0,
      "maximum": 60,
      "description": "Swing amount, 0 to 60 (0 straight, 30 is a classic MPC feel, 60 heavy)."
    },
    "style": {
      "type": "string",
      "enum": [
        "lofi",
        "house",
        "synthwave"
      ],
      "description": "Sound preset: lofi, house or synthwave. Changes drum tables, filter, reverb and defaults."
    },
    "metronome": {
      "type": "boolean",
      "description": "true turns the metronome click on, false turns it off."
    },
    "transpose_content": {
      "type": "boolean",
      "default": true,
      "description": "When key or mode changes: true (default) transposes existing notes, false leaves them as they are."
    }
  },
  "required": [],
  "additionalProperties": false
}

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