Tools to Implement a Shopping Cart

If the customer clicked the "Add to Cart" button in the previous screenshot, their cart would be displayed, as shown in the following figure. Most of the functionality on this page deals with modifying (CartModify) the items in the cart.

	CartModify, Action=SaveForLater		PurchaseURL
	CartModify, Quantity=0		CartModify, Quantity=1
	CartModify

The following figure shows the functionality not supported by Product Advertising API.