> ## Documentation Index
> Fetch the complete documentation index at: https://docs.omni.co/llms.txt
> Use this file to discover all available pages before exploring further.

# sidebar:open embed event

> Emitted by Omni when a user clicks the mobile menu button.

This event is emitted when users click the mobile menu button to open the [sidebar](/administration/settings/sidebar) navigation.

Use this event to track when users interact with mobile navigation or to trigger custom behaviors in your embedding application when the sidebar is accessed.

<Note>
  This event is informational only. The sidebar popover will still open within the embedded iframe regardless of how the parent application handles this event.
</Note>

## Payload

This event carries an empty payload and serves as a notification signal only.

```json theme={null}
{}
```

## Example

When a user clicks the mobile menu button, Omni emits:

```json theme={null}
{
  "name": "sidebar:open",
  "payload": {}
}
```