Shopify payment authorization

I’ve been building an app for a “Buy Now, Try, and Pay Later” model.

To enable this, I set the product price to 0 at checkout.

I need a way to charge customers later if they decide to keep the product after the trial.

Is there a payment authorization token we can store at checkout to facilitate this?

If the store is on Shopify Plus and uses Shopify Payments, I believe extended authorization periods would support this flow, see: https://help.shopify.com/en/manual/payments/payment-authorization#credit-card-authorization-period

If you don’t mind me asking, how did you get approved to become a payment partner?

We are building Treat, a payment method to use HSA/FSA funds at checkout. Our website is savewithtreat.com.

We are building our whole business around becoming a payment partner, so becoming a payment partner is really important for us. Would be really helpful if you could let us know. Thanks m8

The Payments API team would need to connect with you directly, usually via a partner manager.