# Attachment

> The attachments optional block of a .well file: a list of Attachment objects.

Property `attachments` of the .well root, an array of objects, optional. [Defined in the spec](/format/spec/v2/object-schemas#attachment).

| Field | Type | Required | Values / constraints | Description |
| --- | --- | --- | --- | --- |
| `id` | string | yes |  |  |
| `uri` | string | yes | format `uri` |  |
| `media_type` | string | yes |  |  |
| `document_type` | string | no |  |  |
| `filename` | string | no |  |  |
| `description` | string | no |  |  |
| `sha256` | string | no |  |  |