@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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JSON
{
"id": "threshold_top",
"name": "Threshold TOP",
"displayName": "Threshold TOP",
"category": "TOP",
"subcategory": "Filters",
"version": "",
"lastUpdated": "2025-08-07T07:50:10.805Z",
"sourceFile": "C:\\Program Files\\Derivative\\TouchDesigner\\Samples\\Learn\\OfflineHelp\\https.docs.derivative.ca\\Threshold_TOP.htm",
"url": "",
"description": "The Threshold TOP creates a matte with pixel values set to 0 for pixels below the threshold value, and 1 for pixels greater than or equal to the threshold value.",
"summary": "The Threshold TOP creates a matte with pixel values set to 0 for pixels below the threshold value, and 1 for pixels greater than or equal to the threshold value.",
"details": "",
"usage": "",
"tips": [],
"warnings": [],
"parameters": [
{
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"name": "Comparator",
"label": "Comparator",
"group": "General",
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"description": "Select the operation to compare the Threshold parameter to.",
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"name": "Less",
"label": "Less",
"group": "General",
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"description": "less - greater - lessorequal - greaterorequal - equal - notequal -",
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"name": "RGB",
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"group": "General",
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"description": "rgb - - Determines which part of the image used to calculate threshold. This parameter determines the output for the R, G, and B channels.\n\n luminance - Threshold calculated based on luminance values. red - Threshold calculated based on red channel values. green - Threshold calculated based on green channel values. blue - Threshold calculated based on blue channel values. alpha - Threshold calculated based on alpha channel values. rgbaverage - Threshold calculated based on combined RGB average values. average - Threshold calculated based on combined RGBA average values.",
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"name": "Luminance",
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"group": "General",
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"description": "luminance - Threshold calculated based on luminance values. red - Threshold calculated based on red channel values. green - Threshold calculated based on green channel values. blue - Threshold calculated based on blue channel values. alpha - Threshold calculated based on alpha channel values. rgbaverage - Threshold calculated based on combined RGB average values. average - Threshold calculated based on combined RGBA average values.",
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"description": "threshold - Using the function selected in the Comparator parameter, any pixel that satisfies this value will be set to 0. For example, if Comparator = Less then any pixel less than this Threshold value will be set to 0.",
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"description": "alpha - - This parameter determines the output for the alpha channel.\n\n same - Sets the alpha channel to be the same as the RGB channels. one - Sets the Alpha channel to one.",
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"description": "same - Sets the alpha channel to be the same as the RGB channels. one - Sets the Alpha channel to one.",
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"name": "Soften",
"label": "Soften",
"group": "General",
"page": "",
"type": "float",
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"description": "soften - The rate of falloff at the threshold value. As this value set set larger, pixels near the threshold value will be set to something between 0-1.",
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"name": "Output Resolution",
"label": "Output Resolution",
"group": "General",
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"description": "outputresolution - - quickly change the resolution of the 's data.\n\n useinput - Uses the input's resolution. eighth - Multiply the input's resolution by that amount. quarter - Multiply the input's resolution by that amount. half - Multiply the input's resolution by that amount. 2x - Multiply the input's resolution by that amount. 4x - Multiply the input's resolution by that amount. 8x - Multiply the input's resolution by that amount. fit - Fits the width and height to the resolution given below, while maintaining the aspect ratio. limit - The width and height are limited to the resolution given below. If one of the dimensions exceeds the given resolution, the width and height will be reduced to fit inside the given limits while maintaining the aspect ratio. custom - Enables the parameter below, giving direct control over width and height.",
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"group": "General",
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"description": "useinput - Uses the input's resolution. eighth - Multiply the input's resolution by that amount. quarter - Multiply the input's resolution by that amount. half - Multiply the input's resolution by that amount. 2x - Multiply the input's resolution by that amount. 4x - Multiply the input's resolution by that amount. 8x - Multiply the input's resolution by that amount. fit - Fits the width and height to the resolution given below, while maintaining the aspect ratio. limit - The width and height are limited to the resolution given below. If one of the dimensions exceeds the given resolution, the width and height will be reduced to fit inside the given limits while maintaining the aspect ratio. custom - Enables the parameter below, giving direct control over width and height.",
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"description": "resolution - - Enabled only when the parameter is set to Custom . Some Generators like Constant and Ramp do not use inputs and only use this field to determine their size. The drop down menu on the right provides some commonly used resolutions.\n\n resolutionw - resolutionh -",
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"description": "resmenu - A drop-down menu with some commonly used resolutions.",
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"name": "Use Global Res Multiplier",
"label": "Use Global Res Multiplier",
"group": "General",
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"description": "resmult - Uses the Global Multiplier found in Edit>Preferences>TOPs. This multiplies all the TOPs resolutions by the set amount. This is handy when working on computers with different hardware specifications. If a project is designed on a desktop workstation with lots of graphics memory, a user on a laptop with only 64MB VRAM can set the Global Multiplier to a value of half or quarter so it runs at an acceptable speed. By checking this checkbox on, this is affected by the global multiplier.",
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"description": "outputaspect - - Sets the image aspect ratio allowing any textures to be viewed in any size. Watch for unexpected results when compositing TOPs with different aspect ratios. (You can define images with non-square pixels using xres, yres, aspectx, aspecty where xres/yres != aspectx/aspecty.)\n\n useinput - Uses the input's aspect ratio. resolution - Uses the aspect of the image's defined resolution (ie 512x256 would be 2:1), whereby each pixel is square. custom - Lets you explicitly define a custom aspect ratio in the Aspect parameter below.",
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"description": "aspect - - Use when Output Aspect parameter is set to Custom Aspect.\n\n aspect1 - aspect2 -",
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"description": "armenu - A drop-down menu with some commonly used aspect ratios.",
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"description": "inputfiltertype - - This controls pixel filtering on the input image of the .\n\n nearest - Uses nearest pixel or accurate image representation. Images will look jaggy when viewing at any zoom level other than Native . linear - Uses linear filtering between pixels. This is how you get images in viewers to look good at various zoom levels, especially useful when using any Fill Viewer setting other than Native . mipmap - Uses mipmap filtering when scaling images. This can be used to reduce artifacts and sparkling in moving/scaling images that have lots of detail.",
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"description": "nearest - Uses nearest pixel or accurate image representation. Images will look jaggy when viewing at any zoom level other than Native . linear - Uses linear filtering between pixels. This is how you get images in viewers to look good at various zoom levels, especially useful when using any Fill Viewer setting other than Native . mipmap - Uses mipmap filtering when scaling images. This can be used to reduce artifacts and sparkling in moving/scaling images that have lots of detail.",
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"description": "fillmode - - Determine how the image is displayed in the viewer.\nNOTE:To get an understanding of how TOPs work with images, you will want to set this to Native as you lay down TOPs when starting out. This will let you see what is actually happening without any automatic viewer resizing.\n\n\n useinput - Uses the same Fill Viewer settings as it's input. fill - Stretches the image to fit the edges of the viewer. width - Stretches image to fit viewer horizontally. height - Stretches image to fit viewer vertically. best - Stretches or squashes image so no part of image is cropped. outside - Stretches or squashes image so image fills viewer while constraining it's proportions. This often leads to part of image getting cropped by viewer. nativeres - Displays the native resolution of the image in the viewer.",
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"description": "filtertype - - This controls pixel filtering in the viewers.\n\n nearest - Uses nearest pixel or accurate image representation. Images will look jaggy when viewing at any zoom level other than Native . linear - Uses linear filtering between pixels. Use this to get images in viewers to look good at various zoom levels, especially useful when using any Fill Viewer setting other than Native . mipmap - Uses mipmap filtering when scaling images. This can be used to reduce artifacts and sparkling in moving/scaling images that have lots of detail.",
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"name": "Passes",
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"description": "npasses - Duplicates the operation of the the specified number of times. Making this larger than 1 is essentially the same as taking the output from each pass, and passing it into the first input of the node and repeating the process. Other inputs and parameters remain the same for each pass.",
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"name": "Channel Mask",
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"description": "chanmask - Allows you to choose which channels (R, G, B, or A) the will operate on. All channels are selected by default.",
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