API to show customer discount on their profile page?

[BigLittleImpact]

I'd like to build an embedded app that shows any discount codes a customer has on their profile page.

I believe I'd need the Storefront API for this, but looking through the Customer and DiscountNode objects in GraphiQL, I can't see any properties that let me retrieve discount codes for a customer. Am I looking in the wrong place, or is this currently not available?

Thanks in advance for any help.