What is Selling Partner API (SP-API)?
Selling Partner API (SP-API) is a REST-based API that helps Amazon Selling Partners programmatically access their data on orders, shipments, payments, and much more. Applications using the SP-API can increase selling efficiency, reduce labor requirements, and improve response time to customers, helping Selling Partners grow their businesses. SP-API allows Amazon Sellers to programmatically access thier data on listings, orders, payments, reports and more.