copresence-canvas.vercel.app
An infinite canvas where a human and an AI agent edit the same live in-browser scene at the same time, over WebMCP.
First seen 2026-11-05 · Last seen 2026-11-05 · Source: webmcp.com
Answer 5 · Act 6 · Transact 0 · Score: Not yet scored
Tool inspector
arrange_region
Physically reposition a set of notes into a spatial layout. You choose WHAT belongs together and the shape it should take; the page computes where each note goes and animates a labelled agent cursor to move them. Use "cluster" for affinity groups, "timeline_horizontal" for anything sequenced or dated, "grid" for a matrix or even survey, "hierarchy" for parent/child structure. Pass a label to title the group.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
nodeIds |
array | yes | Ids of the notes to arrange, from get_scene. |
layout |
string | yes | The spatial shape to impose on the group. |
label |
string | no | Optional title for the group, shown on the canvas. |
basedOn |
number | no | The `asOf` you were given by the get_scene this plan is based on. Cite it and the page will refuse this call outright rather than let it overwrite anything another participant changed while you were deciding. Omitting it is allowed and skips the check; you are then writing blind. |
Raw JSON schema
{
"type": "object",
"properties": {
"nodeIds": {
"type": "array",
"items": {
"type": "string"
},
"description": "Ids of the notes to arrange, from get_scene."
},
"layout": {
"type": "string",
"enum": [
"cluster",
"timeline_horizontal",
"grid",
"hierarchy"
],
"description": "The spatial shape to impose on the group."
},
"label": {
"type": "string",
"description": "Optional title for the group, shown on the canvas."
},
"basedOn": {
"type": "number",
"description": "The `asOf` you were given by the get_scene this plan is based on. Cite it and the page will refuse this call outright rather than let it overwrite anything another participant changed while you were deciding. Omitting it is allowed and skips the check; you are then writing blind."
}
},
"required": [
"nodeIds",
"layout"
],
"additionalProperties": false
}
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