It's very interesting and intuitive the single API reference that allows to integrate single object easily through an URL. But is it possible to integrate a complete sheet or complete app through URL passing a predefined selection?
Basically, I would like to reach a Qlik Sense app with a predefined selection on filters if possible through an url parameter, do you think is it possible?
What you are referring here is Document chaining and is not fully available in Qliksense yet.
You can navigate to a particular sheet using a URL but not with the selection parameters yet. I am sure this would be available soon. As of now, you can default a selection in an app using the script to an extent as mentioned in this discussion Starting with a default filter
single configurator calls an object not an app. an object can be a sheet, (but not the app). If you want to drill to a full app with multiple sheets,you may have to rework the sheet to sheet navigation (using URLs)