Enhance documentation

canvas.selection

Read the accountable person’s most recently changed live browser selection at an exact canvas version.

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canvas.selection

query read

Use when current canvas state is needed before deciding or changing anything.

Before calling

Authenticate as the accountable Enhance person.
Use only resource identifiers returned by an earlier capability result or supplied by the person.

Input

Show complete JSON Schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "canvasId": {
      "type": "string",
      "format": "uuid",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"
    }
  },
  "required": [
    "canvasId"
  ],
  "additionalProperties": false
}

Example

Show example input

{
  "canvasId": "00000000-0000-4000-8000-000000000010"
}

Result

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

Recovery

BAD_REQUEST: correct the named fields and call again.
UNAUTHORIZED: restore Enhance authentication, then retry once.
FORBIDDEN or NOT_FOUND: list accessible resources and choose an allowed identifier.
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

Use the returned identifiers and version in the next canvas operation.

Compatibility: 8a8a07c87b36f083116aadbfc76cff11c328fd1f0c94e6b4622e45d89115ad41.