File

A file attachment.

Table

Property	Type	Required	Description
downloadUrl	url	Yes	The file’s download URL.
name	string	Yes	The file’s name.
description	string	No	The file’s description.
sizeInBytes	numeric	No	The file’s size in bytes.
mimeType	string	No	The file’s MIME type.
createdAt	utcDateTime	Yes	The file’s creation date.
lastModifiedAt	utcDateTime	Yes	The file’s last modified date.

Formats

Example

A JSON example of this model.

{
  "downloadUrl": "https://example.com/file.pdf",
  "name": "example.pdf",
  "description": "A PDF file with instructions",
  "sizeInBytes": 1000,
  "mimeType": "application/pdf",
  "createdAt": "2025-01-01T17:01:01",
  "lastModifiedAt": "2025-01-02T17:30:00"
}

JSON Schema

The JSON Schema for this model.

$schema: https://json-schema.org/draft/2020-12/schema
$id: File.yaml
type: object
properties:
  downloadUrl:
    type: string
    format: uri
    description: The file's download URL.
  name:
    type: string
    description: The file's name.
  description:
    type: string
    description: The file's description.
  sizeInBytes:
    type: number
    description: The file's size in bytes.
  mimeType:
    type: string
    description: The file's MIME type.
  createdAt:
    type: string
    format: date-time
    description: The timestamp (in UTC) at which the record was created.
  lastModifiedAt:
    type: string
    format: date-time
    description: The timestamp (in UTC) at which the record was last modified.
required:
  - downloadUrl
  - name
  - createdAt
  - lastModifiedAt
examples:
  - downloadUrl: https://example.com/file.pdf
    name: example.pdf
    description: A PDF file with instructions
    sizeInBytes: 1000
    mimeType: application/pdf
    createdAt: 2025-01-01T17:01:01
    lastModifiedAt: 2025-01-02T17:30:00
  - downloadUrl: https://example.com/image.png
    name: image.png
    sizeInBytes: 1000
    mimeType: image/png
    createdAt: 2025-01-01T17:01:01
    lastModifiedAt: 2025-01-02T17:30:00
description: A field representing a downloadable file.

TypeSpec

The TypeSpec code for this model.

/** A field representing a downloadable file. */
@example(Examples.File.imageFile, #{ title: "An image file" })
@example(Examples.File.pdfFile, #{ title: "A PDF file" })
model File {
  /** The file's download URL. */
  downloadUrl: url;

  /** The file's name. */
  name: string;

  /** The file's description. */
  description?: string;

  /** The file's size in bytes. */
  sizeInBytes?: numeric;

  /** The file's MIME type. */
  mimeType?: string;

  /** The system metadata for the file. */
  ...Fields.SystemMetadata;
}