{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/ImageBlockParam",
  "title": "ImageBlockParam",
  "type": "object",
  "description": "An image content block. Supports base64-encoded or URL-referenced images.",
  "required": [
    "type",
    "source"
  ],
  "properties": {
    "type": {
      "type": "string",
      "const": "image",
      "example": "example_value"
    },
    "source": {
      "type": "object",
      "description": "The source of the image.",
      "required": [
        "type"
      ],
      "properties": {
        "type": {
          "type": "string",
          "description": "The type of image source.",
          "enum": [
            "base64",
            "url"
          ]
        },
        "media_type": {
          "type": "string",
          "description": "The media type of the image.",
          "enum": [
            "image/jpeg",
            "image/png",
            "image/gif",
            "image/webp"
          ]
        },
        "data": {
          "type": "string",
          "description": "Base64-encoded image data. Required when type is base64."
        },
        "url": {
          "type": "string",
          "format": "uri",
          "description": "URL of the image. Required when type is url."
        }
      },
      "example": "example_value"
    },
    "cache_control": {
      "$ref": "#/components/schemas/CacheControl"
    }
  }
}