Ask HN: T-Shirt Printing API?

Hi! I am looking for a T-Shirt printer with a good API. Ideally, I'd like to have them store my payment information. I'd like to be able to submit orders—a size, a digital image, and possible a shipment address—via an API. Any ideas? I'm looking at Printful (https://www.theprintful.com/dashboard/default/intro) and they look interesting. Thanks!