## Upload Base64

`$ beeper-desktop-cli assets upload-base64`

**post** `/v1/assets/upload/base64`

Upload a file using a JSON body with base64-encoded content. Returns an uploadID that can be referenced when sending messages with attachments. Alternative to the multipart upload endpoint.

### Parameters

- `--content: string`

  Base64-encoded file content (max ~500MB decoded)

- `--file-name: optional string`

  Original filename. Generated if omitted

- `--mime-type: optional string`

  MIME type. Auto-detected from magic bytes if omitted

### Returns

- `AssetUploadBase64Response: object { duration, error, fileName, 6 more }`

  - `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

```cli
beeper-desktop-cli assets upload-base64 \
  --content x
```