Enhance documentation

canvas.importAsset

Import one selected local image or font into the native canvas asset lifecycle, verify its bytes, and return a durable resource without placing it.

↓ Markdown

canvas.importAsset

mutation write

Use when the requested change exactly matches canvas.importAsset; read the current state first when a version or identifier may have changed.

Before calling

Authenticate as the accountable Enhance person.
Use only resource identifiers returned by an earlier capability result or supplied by the person.
Reuse clientToken only when retrying this exact mutation input.

Input

Show complete JSON Schema

{"$schema":"https://json-schema.org/draft/2020-12/schema","type":"object","properties":{"canvasRef":{"type":"string","minLength":1},"source":{"type":"object","properties":{"kind":{"type":"string","const":"file"},"path":{"type":"string","minLength":1,"description":"Explicit local file path. PNG, JPEG, GIF, WebP, AVIF, TTF, OTF, WOFF or WOFF2."}},"required":["kind","path"],"additionalProperties":false}},"required":["canvasRef","source"],"additionalProperties":false}

Example

Show example input

{
 "canvasRef": "00000000-0000-4000-8000-000000000010",
 "source": {
  "kind": "file",
  "path": "/project/logo.png"
 }
}

Result

Returns a typed canvas.importAsset result from the Enhance API without transport-specific prose.

operation (required): Returned field operation.
resource (required): Returned field resource.
placement (required): Returned field placement.

Show complete result JSON Schema

{"$schema":"https://json-schema.org/draft/2020-12/schema","type":"object","properties":{"operation":{"type":"object","properties":{"canvasId":{"type":"string","format":"uuid","pattern":"^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"},"clientToken":{"type":"string","format":"uuid","pattern":"^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"},"kind":{"type":"string","const":"canvas-asset"}},"required":["canvasId","clientToken","kind"],"additionalProperties":false},"resource":{"type":"object","properties":{"canvasId":{"type":"string","format":"uuid","pattern":"^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"},"clientToken":{"type":"string","format":"uuid","pattern":"^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"},"assetId":{"type":"string","format":"uuid","pattern":"^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"},"kind":{"type":"string","enum":["image","font"]},"contentType":{"type":"string"},"bytes":{"type":"integer","exclusiveMinimum":0,"maximum":9007199254740991},"sha256":{"type":"string","pattern":"^[a-f0-9]{64}$"},"path":{"type":"string","pattern":"^\\/v1\\/canvas-assets\\/.*"},"state":{"type":"string","const":"ready"},"metadata":{"oneOf":[{"type":"object","properties":{"kind":{"type":"string","const":"image"},"width":{"type":"integer","exclusiveMinimum":0,"maximum":9007199254740991},"height":{"type":"integer","exclusiveMinimum":0,"maximum":9007199254740991}},"required":["kind","width","height"],"additionalProperties":false},{"type":"object","properties":{"kind":{"type":"string","const":"font"},"family":{"type":"string","minLength":1},"subfamily":{"type":"string"},"style":{"type":"string","enum":["normal","italic","oblique"]},"minimumWeight":{"type":"number","minimum":1,"maximum":1000},"maximumWeight":{"type":"number","minimum":1,"maximum":1000}},"required":["kind","family","subfamily","style","minimumWeight","maximumWeight"],"additionalProperties":false}]}},"required":["canvasId","clientToken","assetId","kind","contentType","bytes","sha256","path","state","metadata"],"additionalProperties":false},"placement":{"type":"string","const":"not_requested"}},"required":["operation","resource","placement"],"additionalProperties":false}

Example result

Show example result

{
 "operation": {
  "kind": "canvas-asset",
  "canvasId": "00000000-0000-4000-8000-000000000010",
  "clientToken": "00000000-0000-4000-8000-000000000010"
 },
 "resource": {
  "canvasId": "00000000-0000-4000-8000-000000000010",
  "clientToken": "00000000-0000-4000-8000-000000000010",
  "assetId": "00000000-0000-4000-8000-000000000010",
  "kind": "image",
  "contentType": "image/png",
  "bytes": 1024,
  "sha256": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
  "path": "/v1/canvas-assets/00000000-0000-4000-8000-000000000010/00000000-0000-4000-8000-000000000010",
  "state": "ready",
  "metadata": {
   "kind": "image",
   "width": 64,
   "height": 64
  }
 },
 "placement": "not_requested"
}

Recovery

BAD_REQUEST: correct the named fields and call again.
UNAUTHORIZED: restore Enhance authentication, then retry once.
FORBIDDEN or NOT_FOUND: check the supplied resource and selection; do not substitute unrelated content. Ask for corrected access or scope if needed.
CONFLICT: read the current resource, merge the intended change, and retry with its version.
INTERNAL: run Enhance diagnostics, report the failure, and stop repeating the call.

Continue with

Read the affected canvas resource to confirm the result.

Versions

Compatibility: 93dfb93847340b2a2b7553aff12abea934d18db4e97e0f2ddcb2f1ea592d8202.

Minimum tested versions: Enhance CLI and MCP runtime 0.1.40, plugin 1.0.38, Node.js 24. No older floor is published.