I don’t have enough Vue or Quasar experience to say if it is right or wong to do that. I even did it using the boot plugin at first, but it felt dirty. So i changed my code and used the vuex store on the beforeMount event of my app.

If you really need async calls to initialize your plugin you should look at the boot plugin : http://quasar-framework.org/guide/app-plugins.html#Special-App-Plugin-Boot

This is a special plugin that let’s you launch the app when your are ready, after recieving the ajax callback in your case.