## Upload

**post** `/v1/assets/upload`

Upload a file to a temporary location using multipart/form-data. Returns an uploadID that can be referenced when sending messages with attachments.

### Returns

- `duration: optional number`

  Duration in seconds (audio/videos)

- `error: optional string`

  Error message if upload failed

- `fileName: optional string`

  Resolved filename

- `fileSize: optional number`

  File size in bytes

- `height: optional number`

  Height in pixels (images/videos)

- `mimeType: optional string`

  Detected or provided MIME type

- `srcURL: optional string`

  Local file URL (file://) for the uploaded asset

- `uploadID: optional string`

  Unique upload ID for this asset

- `width: optional number`

  Width in pixels (images/videos)

### Example

```http
curl http://localhost:23373/v1/assets/upload \
    -H 'Content-Type: multipart/form-data' \
    -F 'file=@/path/to/file'
```