@bottobot/td-mcp
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TouchDesigner MCP Server v2.8.0 - 21 MCP tools, 629 operators with clean parameter data, 69 Python API classes, 14 tutorials, 32 workflow patterns. Includes version system, experimental techniques KB, core tool enhancements, and experimental build support
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{
"id": "event_chop",
"name": "Event CHOP",
"displayName": "Event CHOP",
"category": "CHOP",
"subcategory": "Generators",
"version": "",
"lastUpdated": "2025-08-07T07:50:00.105Z",
"sourceFile": "C:\\Program Files\\Derivative\\TouchDesigner\\Samples\\Learn\\OfflineHelp\\https.docs.derivative.ca\\Event_CHOP.htm",
"url": "",
"description": "The Event CHOP manages the birth and life of overlapping events triggered by devices like a MIDI keyboard. It can be seen as a simple particle system designed for MIDI keyboards.",
"summary": "The Event CHOP manages the birth and life of overlapping events triggered by devices like a MIDI keyboard. It can be seen as a simple particle system designed for MIDI keyboards.",
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{
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"name": "ID",
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"description": "The sequence # of the event, starting from 0 and incrementing by 1 for each event.",
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"description": "index - The channel index of the incoming that caused the event.",
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"name": "Active",
"label": "Active",
"group": "General",
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"description": "active - While the input is greater than 0 this channel goes to 1, ie when the input channel goes \"On\".",
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"label": "Input",
"group": "General",
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"description": "input - The value of the input channel when the input went on (at the birth of the event). It is often the note velocity value. If you pass the Midi In into the , and set the Midi In option to output the velocity, velocity will end up in this channel and preserved until the event ends.",
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"description": "time - Time in seconds from the start of the event.",
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"description": "adsr - The value according to the Attack, Decay, Sustain, Release. It uses the parameters on the ADSR page, regulating the speed and values, with extended parameters: Attack Time, Attack Level, Decay Time, Sustain Time, Sustain Min, Sustain Max, Release Time, Release Level.",
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"description": "state - This is good for playing back movies. You divide your movie into 4 parts that correspond to the (0=attack, 1=decay, 2=sustain, 3=release) phases. The state channel outputs fractional values, so you can watch it climb through all the transitions, including multiple sustain-sections. e.g., 0...1...2...2...2...2...3...4. If your movie is 8 seconds long, take the state channel and multiply by 2, passing it as the time-index of the movie.\t\nGoes from 0 to 1 during the attack phase, 1 to 2 as it repeats in the sustain phase, and 2 to 3 in the release phase. It is suitable for indexing movies.",
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"name": "Reset Condition",
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"description": "resetcondition - - Determines the reset behavior of using the 2nd Input Reset Trigger. This parameter is only active if there is an input connected to the 's 2nd input.\n\n offtoon - on - ontooff - off -",
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"description": "offtoon - on - ontooff - off -",
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"description": "reset - When set to 'On' it resets the clearing all events.",
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"name": "Reset Pulse",
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"description": "resetpulse - Immediately resets the and clears all events in the frame it was clicked.",
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"name": "Callbacks DAT",
"label": "Callbacks DAT",
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"description": "callbacks - The path to a containing onCreate() and onDestroy() callbacks for each event.",
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"description": "attacktime - Affects adsr and state channel. Time to rise to max attack level.",
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"description": "attacktunit - Select the units to use for this parameter, Samples, Frames, or Seconds.",
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"name": "Attack Level",
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"description": "attacklevel - Affects adsr channel. Peak attack level.",
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"name": "Decay Time",
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"description": "decaytime - Affects adsr channel and state channel. Time after peak to sustain level.",
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"description": "sustaintime - Affects adsr channel.",
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"description": "sustainmin - Affects adsr channel. Level at start of sustain time.",
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"id": null,
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"description": "releaselevel - Affects adsr channel. Level at end of life cycle.",
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"examples": [],
"isReadOnly": false,
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"id": null,
"name": "Speed",
"label": "Speed",
"group": "General",
"page": "",
"type": "float",
"dataType": "number",
"style": "",
"defaultValue": null,
"minValue": null,
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"description": "speed - Affects the speed of the event, letting you stretch out or shorten the life of an event.",
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"units": "",
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{
"id": null,
"name": "Global Speed",
"label": "Global Speed",
"group": "General",
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"description": "globalspeed -",
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"id": null,
"name": "Time Slice",
"label": "Time Slice",
"group": "General",
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"type": "float",
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"defaultValue": null,
"minValue": null,
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"arraySize": 1,
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"description": "timeslice - Turning this on forces the channels to be \"Time Sliced\". A is the time between the last cook frame and the current cook frame.",
"tooltip": "",
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"isReadOnly": false,
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"id": null,
"name": "Scope",
"label": "Scope",
"group": "General",
"page": "",
"type": "float",
"dataType": "number",
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"defaultValue": null,
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"description": "scope - To determine which channels get affected, some CHOPs use a string on the Common page. See Pattern Matching.",
"tooltip": "",
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"id": null,
"name": "Sample Rate Match",
"label": "Sample Rate Match",
"group": "General",
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"description": "srselect - - Handle cases where multiple input CHOPs' sample rates are different. When Resampling occurs, the curves are interpolated according to the Interpolation Method Option, or \"Linear\" if the Interpolate Options are not available.\n\n first - Use rate of first input to resample others. max - Resample to the highest sample rate. min - Resample to the lowest sample rate. err - Doesn't accept conflicting sample rates.",
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"id": null,
"name": "Resample At First Input's Rate",
"label": "Resample At First Input's Rate",
"group": "General",
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"description": "first - Use rate of first input to resample others. max - Resample to the highest sample rate. min - Resample to the lowest sample rate. err - Doesn't accept conflicting sample rates.",
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{
"id": null,
"name": "Export Method",
"label": "Export Method",
"group": "General",
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"type": "float",
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"description": "exportmethod - - This will determine how to connect the channel to the parameter. Refer to the Export article for more information.\n\n datindex - Uses the docked table and references the channel via the index of the channel in the . datname - Uses the docked table and references the channel via the name of the channel in the . autoname - The channel is the full destination of where to export to, such has geo1/transform1:tx.",
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"id": null,
"name": "DAT Table by Index",
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"id": null,
"name": "Export Root",
"label": "Export Root",
"group": "General",
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"description": "autoexportroot - This path points to the root node where all of the paths that exporting by Channel Name is : are relative to.",
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"description": "exporttable - The used to hold the export information when using the Table Methods (See above).",
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"relatedOperators": [],
"workflowPatterns": [],
"images": [],
"videos": [],
"assets": [],
"keywords": [
"event",
"chop",
"manages",
"birth",
"life",
"overlapping",
"events",
"triggered",
"devices",
"like"
],
"tags": [
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"TouchDesigner",
"Event CHOP"
],
"searchWeight": 1,
"contentHash": "",
"processingDate": "2025-08-07T07:50:00.105Z",
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