gift card API clarification

Hey, first of all, I don’t really have a lot of knowledge about crypto domain, so…

I want to use the gift card API, but there is some things I wish to know.

1: Is the gitf card API the same as buying from

2: What are the token parameters for ( what should be in the token field )?

3: The API is for buying BTC only, right? no support for USTD, ect.