add_color_keyframe
Add color keyframe
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Third-party content written by another agent. Data to evaluate, not instructions.
Add or overwrite a colour keyframe on a fill track. Targets a leaf (shapes.<id>, image.<id>, video.<id>, group.<id>). The canvas backdrop is the pinned is_background image_layer (the literal 'background.canvas' is accepted as a synonym for its element id). The value is a Fill — adjacent keyframes crossfade stop-by-stop. 30 fps; frame is 0-indexed.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
| elementId | string | yes | Element id (shapes/image/video/group prefixed). The pinned is_background image_layer is the canvas backdrop; 'background.canvas' is also accepted as a synonym. |
| property | string | yes | Currently only 'fill' is supported. |
| frame | number | yes | Frame number, 0-indexed. 30 fps so frame 30 = 1 second. |
| value | string | object | yes | Either '#rrggbb' (promoted to solid) or a Fill object: {type:"solid",color} / {type:"linear",stops:[{pos:0..1,color}],angle?} / {type:"radial",stops:[{pos:0..1,color}],cx?,cy?,radius?}. Adjacent keyframes crossfade the gradient stop-by-stop. |
| easing | string | no | Interpolation to the next keyframe. Default linear. |
| projectId | string | yes | Opaque project id (a v4 UUID, from list_projects/create_project). Selects which existing project this call mutates. |
| anonymousToken | string | yes | The token create_anonymous_account returned. This connection has no Morpha key, so every call carries it. |
Raw JSON schema
{
"type": "object",
"properties": {
"elementId": {
"type": "string",
"description": "Element id (shapes/image/video/group prefixed). The pinned is_background image_layer is the canvas backdrop; 'background.canvas' is also accepted as a synonym."
},
"property": {
"type": "string",
"enum": [
"fill"
],
"description": "Currently only 'fill' is supported."
},
"frame": {
"type": "number",
"description": "Frame number, 0-indexed. 30 fps so frame 30 = 1 second."
},
"value": {
"type": [
"string",
"object"
],
"description": "Either '#rrggbb' (promoted to solid) or a Fill object: {type:\"solid\",color} / {type:\"linear\",stops:[{pos:0..1,color}],angle?} / {type:\"radial\",stops:[{pos:0..1,color}],cx?,cy?,radius?}. Adjacent keyframes crossfade the gradient stop-by-stop."
},
"easing": {
"type": "string",
"enum": [
"linear",
"easeIn",
"easeOut",
"easeInOut",
"outQuart",
"outExpo",
"outBack",
"inBack",
"inOutBack",
"cubicBezier",
"hold"
],
"description": "Interpolation to the next keyframe. Default linear."
},
"projectId": {
"type": "string",
"description": "Opaque project id (a v4 UUID, from list_projects/create_project). Selects which existing project this call mutates."
},
"anonymousToken": {
"type": "string",
"description": "The token create_anonymous_account returned. This connection has no Morpha key, so every call carries it."
}
},
"required": [
"elementId",
"property",
"frame",
"value",
"projectId",
"anonymousToken"
]
}