API query capabilities

To my understanding, shopify doesn’t offer a pay with loyalty points feature. I am trying to integrate shopify to an already existent platform that supports pay with points. As a “rigged” solution, is it possible to query our API for the sku (productID), qty, checkoutID and price of each item and then:

  1. generate a unique 100% off coupon for the specific checkout flow (this would need to be automated in some way)

  2. change the price of the said items in a unique checkout window (based on checkoutID). This way the checkout would also be free.

finally you would alter their points total upon checkout completion.