Yes, it’s Backend-agnostic and designed to be embeddable into any web app. It’s basically an editor framework to define your own editor and you write the glue code to your web app.
TBH my suggestion is to work on making this more clear of who it's for. Maybe add a comparison to other current solutions out there, since at first I was a bit confused what it's trying to do. Maybe use like intro.js or something for it.