material.sc
A live Material canvas that exposes WebMCP tools. Open it in an agent browser and ask your agent to read, create, and arrange cards with you.
First seen 2026-11-05 · Last seen 2026-11-05 · Source: webmcp.com
Answer 4 · Act 4 · Transact 0 · Score: Not yet scored
Tool inspector
place_cards_on_canvas
Place multiple existing cards in one call — the efficient way to lay out a whole canvas. Each entry is {itemId, x, y} in canvas coordinates. Use after grouping cards into themes: put each theme's cards in a tight grid cluster, leave a gap between clusters, and add a note header above each cluster with create_card. Bounds, card width, and suggested gap come from get_current_canvas. Demo canvas — the change is visible live but ephemeral (resets on reload).
Page: /webmcp-demo
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
placements |
array | yes | — |
Raw JSON schema
{
"type": "object",
"properties": {
"placements": {
"type": "array",
"minItems": 1,
"items": {
"type": "object",
"properties": {
"itemId": {
"type": "string",
"description": "The card's id from get_current_canvas (its `id` field, not `spaceCardId`)."
},
"x": {
"type": "number"
},
"y": {
"type": "number"
}
},
"required": [
"itemId",
"x",
"y"
],
"additionalProperties": false
}
}
},
"required": [
"placements"
],
"additionalProperties": false
}
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