The Rates API allows you to request a list of shipping quotes for a prospective Shipment. The response will also indicate which Courier is the cheapest, fastest and best value for money, which is a combination of speed, price and reliability.
If you are shipping to United States or Australia, we recommend that you always input
origin_city,origin_state,destination_cityanddestination_state. That information is required by certain couriers to return accurate rates.