I'm trying to show a cart icon in Drupal with the number of items in the cart of our sister Magento site.
I'm using the Magento Core API to look up information on customers and use it in Drupal. I'm trying to load the contents of the cart for a specific Magento Customer ID, but I don't see any way to do this. The cart info API method only supports look ups by quote ID. Quote ID appears to be the primary key for a cart.
Is it possible to look up cart information by customer ID with a Magento API?