Attachment

{
  "type": "object",
  "description": "Represents a file attachment on a message.",
  "properties": {
    "id": {
      "type": "string",
      "description": "Unique identifier for the attachment",
      "example": "attach_001"
    },
    "type": {
      "type": "string",
      "description": "MIME type of the attachment",
      "example": "application/pdf"
    },
    "url": {
      "type": "string",
      "description": "URL to access the attachment",
      "format": "uri",
      "example": "https://api.hubapi.com/files/v3/files/attach_001"
    },
    "filename": {
      "type": "string",
      "description": "Original filename",
      "example": "invoice.pdf"
    },
    "size": {
      "type": "integer",
      "description": "File size in bytes",
      "example": 102400
    }
  },
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "Attachment"
}