# WebhookPayloadMessageMessageAttachmentsInner
## Properties
Name | Type | Description | Notes
------------ | ------------- | ------------- | -------------
**r#type** | **String** | Attachment type (image, video, file, sticker, audio) |
**url** | **String** | Where to fetch the attachment. **The contract differs by platform.** - **WhatsApp**: points at `GET /v1/whatsapp/media/{mediaId}`, an authenticated Zernio endpoint. You MUST send `Authorization: Bearer <your API key>`; fetching it without that header returns `401`. Download and store the bytes when this webhook arrives: Meta drops inbound media after a limited retention window, after which the endpoint answers `400` permanently and the media is unrecoverable. - **Instagram / Facebook / Telegram**: a direct platform CDN link that needs no authentication and expires on the platform's own schedule. |
**payload** | Option<**serde_json::Value**> | Additional attachment metadata | [optional]
[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)