Following are the slots and APIs that are available when building a site plugin for Wix Bookings' Service page.
The Service Page can host a single plugin that users are free to reposition within the page by reordering the Service Page sections:

The slot is identified by a unique placement slot ID. Declare it in the placementsSlotIds array in your plugin's configuration:
Note: The legacy placements format isn't deprecated, and plugins that haven't been migrated continue to work. We still recommend migrating your code to placementsSlotIds.
placements valuesThe slot is represented by the following placement object:
Use the Booking Service plugin API to integrate with the plugin's host.
The API provides data about the current booking service.
| Property | Type | Description |
|---|---|---|
bookingsServiceId | String | ID of the Wix Bookings service that is currently applied on the plugin's host. |
In your site plugin or in your app's server code, you may want to perform actions or implement logic that is dependent on the current booking or related data.
You can do this using the Wix Bookings APIs (Velo and REST).
Last updated: 13 October 2026