PHP ecommerce API? [closed]

Question

Is there such a thing as an open source PHP ecommerce API? That is, just the API (i.e., not a whole CMS etc.). I just want some sort of "library" I can invoke from my own code. All of the open source ecommerce solutions that I've run across (such as http://www.opencart.com/) include a whole UI, etc., which I don't want.

Answer 1

The only one I think of is Shopify which has RESTFul Apis.

http://www.shopify.com/ http://api.shopify.com/