amount api buyer cart checkout donate donation donations edit familiar google offering price product separate seperate september shopping site supports working

I am working on a site that will be using the new Google Donations offering. It came out at the end of September and I believe there is a seperate Donation API that may be different than the Checkout API. I was wondering if your shopping cart supports this yet?

I am not familiar with any separate "donations api". You can set the product price to 0.00 and buyer will be able to edit the price to donate any amount they want to.