Tool tree
MCP MPC — a local-first, 16-bit web sampler with pads, chopping, sequencing and MIDI.
Implementation
gradeNot graded
gradeNot graded
mcpmpc_get_stateAnswer
Read the current MCP-MPC pads, sample assignments, normalized trims, loaded-sample start/end times and durations, pitches, per-pad levels, master output volume, sequence, tempo, swing, and transport state. Pad and step numbers are 1-based.
View tool JSON
{
"name": "mcpmpc_get_state",
"kind": "answer",
"impl": "imperative",
"description": "Read the current MCP-MPC pads, sample assignments, normalized trims, loaded-sample start/end times and durations, pitches, per-pad levels, master output volume, sequence, tempo, swing, and transport state. Pad and step numbers are 1-based.",
"inputSchema": {
"type": "object",
"properties": {},
"additionalProperties": false
}
}mcpmpc_select_kitAction
Replace all 16 pad assignments with one MCP-MPC factory kit while preserving the current sequence, tempo, swing, and transport state.
View tool JSON
{
"name": "mcpmpc_select_kit",
"kind": "act",
"impl": "imperative",
"description": "Replace all 16 pad assignments with one MCP-MPC factory kit while preserving the current sequence, tempo, swing, and transport state.",
"inputSchema": {
"type": "object",
"properties": {
"kit": {
"type": "string",
"enum": [
"fischer-808",
"uzu",
"big-rusty",
"swirly"
],
"description": "Factory kit identifier. Fischer 808 is classic analog; Uzu is modern electronic; Big Rusty is a roomy acoustic kit; Swirly is a brushed hand-percussion palette."
}
},
"required": [
"kit"
],
"additionalProperties": false
}
}mcpmpc_load_sampleAction
Fetch a directly accessible audio URL and load it onto one pad. The URL must be HTTPS or same-origin HTTP, a blob URL, or an audio data URL; cross-origin servers must allow CORS.
View tool JSON
{
"name": "mcpmpc_load_sample",
"kind": "act",
"impl": "imperative",
"description": "Fetch a directly accessible audio URL and load it onto one pad. The URL must be HTTPS or same-origin HTTP, a blob URL, or an audio data URL; cross-origin servers must allow CORS.",
"inputSchema": {
"type": "object",
"properties": {
"pad": {
"type": "integer",
"minimum": 1,
"maximum": 16
},
"url": {
"type": "string",
"minLength": 1,
"description": "Direct URL of an audio file, not a webpage."
},
"name": {
"type": "string",
"minLength": 1,
"maxLength": 24
},
"shortName": {
"type": "string",
"minLength": 1,
"maxLength": 6
}
},
"required": [
"pad",
"url"
],
"additionalProperties": false
}
}mcpmpc_assign_padAction
Copy a sample assignment, including its current pitch, level, and trim, from one pad to another pad.
View tool JSON
{
"name": "mcpmpc_assign_pad",
"kind": "act",
"impl": "imperative",
"description": "Copy a sample assignment, including its current pitch, level, and trim, from one pad to another pad.",
"inputSchema": {
"type": "object",
"properties": {
"sourcePad": {
"type": "integer",
"minimum": 1,
"maximum": 16
},
"targetPad": {
"type": "integer",
"minimum": 1,
"maximum": 16
}
},
"required": [
"sourcePad",
"targetPad"
],
"additionalProperties": false
}
}mcpmpc_configure_padAction
Change one pad's pitch, volume, normalized sample trim, or display names. Pitch is measured in semitones, volume is a percentage, and trim positions are normalized from 0 to 1. For start/end times in seconds, use mcpmpc_set_sample_range.
View tool JSON
{
"name": "mcpmpc_configure_pad",
"kind": "act",
"impl": "imperative",
"description": "Change one pad's pitch, volume, normalized sample trim, or display names. Pitch is measured in semitones, volume is a percentage, and trim positions are normalized from 0 to 1. For start/end times in seconds, use mcpmpc_set_sample_range.",
"inputSchema": {
"type": "object",
"properties": {
"pad": {
"type": "integer",
"minimum": 1,
"maximum": 16
},
"pitch": {
"type": "number",
"minimum": -24,
"maximum": 24
},
"volume": {
"type": "number",
"minimum": 0,
"maximum": 100,
"description": "Level for only this pad, as a percentage."
},
"sliceStart": {
"type": "number",
"minimum": 0,
"maximum": 0.999
},
"sliceEnd": {
"type": "number",
"minimum": 0.001,
"maximum": 1
},
"name": {
"type": "string",
"minLength": 1,
"maxLength": 24
},
"shortName": {
"type": "string",
"minLength": 1,
"maxLength": 6
}
},
"required": [
"pad"
],
"additionalProperties": false
}
}mcpmpc_set_sample_rangeAction
Set the playable start and/or end time, in seconds, for the sample assigned to one pad. Omit either boundary to keep its current value. Use mcpmpc_get_state to inspect the sample duration and current startSeconds/endSeconds.
View tool JSON
{
"name": "mcpmpc_set_sample_range",
"kind": "act",
"impl": "imperative",
"description": "Set the playable start and/or end time, in seconds, for the sample assigned to one pad. Omit either boundary to keep its current value. Use mcpmpc_get_state to inspect the sample duration and current startSeconds/endSeconds.",
"inputSchema": {
"type": "object",
"properties": {
"pad": {
"type": "integer",
"minimum": 1,
"maximum": 16
},
"startSeconds": {
"type": "number",
"minimum": 0,
"description": "Playable start time measured from the beginning of the source sample."
},
"endSeconds": {
"type": "number",
"exclusiveMinimum": 0,
"description": "Playable end time measured from the beginning of the source sample."
}
},
"required": [
"pad"
],
"anyOf": [
{
"required": [
"startSeconds"
]
},
{
"required": [
"endSeconds"
]
}
],
"additionalProperties": false
}
}mcpmpc_chop_sampleAction
Split a source pad sample evenly into 2, 4, 8, or 16 chops and assign them to consecutive pads. The destination range cannot run past pad 16.
View tool JSON
{
"name": "mcpmpc_chop_sample",
"kind": "act",
"impl": "imperative",
"description": "Split a source pad sample evenly into 2, 4, 8, or 16 chops and assign them to consecutive pads. The destination range cannot run past pad 16.",
"inputSchema": {
"type": "object",
"properties": {
"sourcePad": {
"type": "integer",
"minimum": 1,
"maximum": 16
},
"count": {
"type": "integer",
"enum": [
2,
4,
8,
16
]
},
"startPad": {
"type": "integer",
"minimum": 1,
"maximum": 16,
"description": "First destination pad. Defaults to sourcePad."
},
"sliceStart": {
"type": "number",
"minimum": 0,
"maximum": 0.999
},
"sliceEnd": {
"type": "number",
"minimum": 0.001,
"maximum": 1
}
},
"required": [
"sourcePad",
"count"
],
"additionalProperties": false
}
}mcpmpc_create_sequenceAction
Create or merge a one-bar, 16-step drum sequence. Supply tracks with 1-based pad and step numbers, plus optional tempo, swing, and play state.
View tool JSON
{
"name": "mcpmpc_create_sequence",
"kind": "act",
"impl": "imperative",
"description": "Create or merge a one-bar, 16-step drum sequence. Supply tracks with 1-based pad and step numbers, plus optional tempo, swing, and play state.",
"inputSchema": {
"type": "object",
"properties": {
"tracks": {
"type": "array",
"minItems": 1,
"maxItems": 16,
"items": {
"type": "object",
"properties": {
"pad": {
"type": "integer",
"minimum": 1,
"maximum": 16
},
"steps": {
"type": "array",
"maxItems": 16,
"uniqueItems": true,
"items": {
"type": "integer",
"minimum": 1,
"maximum": 16
}
}
},
"required": [
"pad",
"steps"
],
"additionalProperties": false
}
},
"mode": {
"type": "string",
"enum": [
"replace",
"merge"
],
"default": "replace"
},
"bpm": {
"type": "number",
"minimum": 40,
"maximum": 220
},
"swing": {
"type": "number",
"minimum": 0,
"maximum": 60
},
"play": {
"type": "boolean"
}
},
"required": [
"tracks"
],
"additionalProperties": false
}
}mcpmpc_play_padAction
Trigger one MCP-MPC pad now at an optional velocity from 0.04 to 1.
View tool JSON
{
"name": "mcpmpc_play_pad",
"kind": "act",
"impl": "imperative",
"description": "Trigger one MCP-MPC pad now at an optional velocity from 0.04 to 1.",
"inputSchema": {
"type": "object",
"properties": {
"pad": {
"type": "integer",
"minimum": 1,
"maximum": 16
},
"velocity": {
"type": "number",
"minimum": 0.04,
"maximum": 1,
"default": 0.94
}
},
"required": [
"pad"
],
"additionalProperties": false
}
}mcpmpc_set_volumeAction
Set the master output level shared by every pad and sample. To change one pad only, use mcpmpc_configure_pad with its volume field. Use 0 to mute or 100 for full level.
View tool JSON
{
"name": "mcpmpc_set_volume",
"kind": "act",
"impl": "imperative",
"description": "Set the master output level shared by every pad and sample. To change one pad only, use mcpmpc_configure_pad with its volume field. Use 0 to mute or 100 for full level.",
"inputSchema": {
"type": "object",
"properties": {
"volume": {
"type": "number",
"minimum": 0,
"maximum": 100,
"description": "Master output level as a percentage."
}
},
"required": [
"volume"
],
"additionalProperties": false
}
}mcpmpc_set_transportAction
Start or stop the current sequence and optionally set its tempo and swing.
View tool JSON
{
"name": "mcpmpc_set_transport",
"kind": "act",
"impl": "imperative",
"description": "Start or stop the current sequence and optionally set its tempo and swing.",
"inputSchema": {
"type": "object",
"properties": {
"playing": {
"type": "boolean"
},
"bpm": {
"type": "number",
"minimum": 40,
"maximum": 220
},
"swing": {
"type": "number",
"minimum": 0,
"maximum": 60
}
},
"additionalProperties": false
}
}