When creating rooms using the REST API, you can send an extra identifier as part of your API request. This identifier will become part of the room URL, acting as a tag to enable further analysis.
Rooms created using the API get a unique name/URL based on your Whereby domain and a randomly generated ID.
If for some reason you need to attach your own identifier to the room URL, you can do so by using the roomNamePrefix parameter in the body of the POST request to include a string which will then be used as a room name prefix.
The string can be up to 39 characters long, and can contain alphanumerical characters.