To allow users to select a shipping rate, and get an estimate of the total cost of an order, you can call the Estimate Shipping API to get the cost and available shipping classes. Only the zip code is required to return rates, but the rate will be more accurate if you provide the actual street address.

When submitting an shipment contents you can identify products either by the Vinoshipper product ID or SKU. To indicate which ID format you are using, set the productIdType to either SKU or VS_ID.