Nelson,

Based on you question, I assume you are wanting to communicate with the Shopify GraphQL, while I have not done it, my preferred method would be to do the coding in python ( I am sure there are opensource modules to talk to the Shopify GraphQL api ), and I would write modules to simplify the calls I needed to make, and then access that from BASIC.

Yet, you could do it all from basic if you wanted to, since GraphQL is another type of HTTP request, like the RESTFul calls you may be using today. 

A few years ago during an MVIS demo (1.x) someone briefly showed how to use GraphQL with Universe.  Have not been able to track it down.  Anyhow, here is something from Medium which looks like a good starting point - I'm interested in this as well.  If you're presented with a paywall let me know and I'll create a PDF. 

https://medium.com/@matiesogeoffrey/graphql-vs-rest-a-detailed-comparison-of-queries-mutations-and-http-methods-b3dc1ae2097a

I have a working Shopify integration with Unidata using curl as the transport.  GraphQL can be a bit of a bugger compared to REST as it's far more complicated to support the additional features and flexibility.  But there are ways to keep it simple.  Feel free to contact me directly if you'd like more info.  No sales pitch, just answers.