ToolDestructive

Update cover metadata

update_article_cover_metadata

You need to create, inspect, revise, cite, or add images to article drafts.

When to use it

You need to create, inspect, revise, cite, or add images to article drafts.

Typical workflow

List or read drafts, make complete replacement edits with optimistic concurrency, and insert visual blocks at stable markers.

What it returns

Draft metadata, editable draft bodies, update timestamps, embeds, or image blocks.

Avoid using it when

You need to publish, schedule, delete, or email a post; those are human-only.

Advanced input contract

Agent hosts use this JSON Schema to validate the exact input shape.

View full registry notes

Update alt text, focal point, source, and generation provenance. Preview this operation with mode=preview and a stable idempotencyKey. After approval, commit with mode=commit, operationId and commitToken only; saved preview fields cannot be replaced.

View JSON Schema

{
  "type": "object",
  "properties": {
    "documentId": {
      "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)$"
    },
    "expectedUpdatedAt": {
      "type": "string",
      "format": "date-time",
      "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z))$"
    },
    "imageUrl": {
      "type": "string",
      "format": "uri"
    },
    "altText": {
      "type": "string",
      "maxLength": 1000
    },
    "focalPoint": {
      "type": "object",
      "properties": {
        "x": {
          "type": "number",
          "minimum": 0,
          "maximum": 1
        },
        "y": {
          "type": "number",
          "minimum": 0,
          "maximum": 1
        }
      },
      "required": [
        "x",
        "y"
      ]
    },
    "sourceUrl": {
      "type": "string",
      "format": "uri"
    },
    "generationProvenance": {
      "type": "object",
      "propertyNames": {
        "type": "string"
      },
      "additionalProperties": {}
    },
    "mode": {
      "type": "string",
      "enum": [
        "preview",
        "commit"
      ]
    },
    "idempotencyKey": {
      "type": "string",
      "minLength": 1,
      "maxLength": 500
    },
    "operationId": {
      "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)$"
    },
    "commitToken": {
      "type": "string",
      "minLength": 1,
      "maxLength": 500
    }
  },
  "required": [
    "mode"
  ],
  "additionalProperties": false,
  "anyOf": [
    {
      "$schema": "http://json-schema.org/draft-07/schema#",
      "type": "object",
      "properties": {
        "documentId": {
          "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)$"
        },
        "expectedUpdatedAt": {
          "type": "string",
          "format": "date-time",
          "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z))$"
        },
        "imageUrl": {
          "type": "string",
          "format": "uri"
        },
        "altText": {
          "type": "string",
          "maxLength": 1000
        },
        "focalPoint": {
          "type": "object",
          "properties": {
            "x": {
              "type": "number",
              "minimum": 0,
              "maximum": 1
            },
            "y": {
              "type": "number",
              "minimum": 0,
              "maximum": 1
            }
          },
          "required": [
            "x",
            "y"
          ]
        },
        "sourceUrl": {
          "type": "string",
          "format": "uri"
        },
        "generationProvenance": {
          "type": "object",
          "propertyNames": {
            "type": "string"
          },
          "additionalProperties": {}
        },
        "mode": {
          "type": "string",
          "const": "preview"
        },
        "idempotencyKey": {
          "type": "string",
          "minLength": 1,
          "maxLength": 500
        }
      },
      "required": [
        "documentId",
        "expectedUpdatedAt",
        "mode",
        "idempotencyKey"
      ],
      "additionalProperties": false
    },
    {
      "$schema": "http://json-schema.org/draft-07/schema#",
      "type": "object",
      "properties": {
        "mode": {
          "type": "string",
          "const": "commit"
        },
        "operationId": {
          "type": "string",
          "format": "uuid",
          "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"
        },
        "commitToken": {
          "type": "string",
          "minLength": 1,
          "maxLength": 500
        }
      },
      "required": [
        "mode",
        "operationId",
        "commitToken"
      ],
      "additionalProperties": false
    }
  ]
}

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