I'm trying to achieve the following: building a product configurator app with Angular embedding the Angular app in an iframe in the Shopify frontend make calls from Angular to Shopify The product configurator shall fetch custom constants from Shopify and also create a new Product via the API and make it possible for customers to buy these products. I've already setup: the Angular app an API to handle requests between Angular and Shopify custom Shopify app basis What stops me from continuing is that I've read that you can't create custom endpoints in Shopify. This means I can't even fetch the settings I've created in the Shopify app DB schema for my Angular app. Are there any other methods I could use to embed the App into Shopify frontend and make calls to query the DB/API?