Shipping Options 3.0 Receive a comprehensive list of pricing, service standards, and shipping options for USPS products within a single API call. REST
Tracking 3.0 This API returns tracking status and related details for a given USPS package, including scan events and their date, time, and location. The Tracking APIs allow you to integrate the status of your shipment into your customer-facing experience and internal fulfillment processes that will benefit your company by: Providing your customers with the latest status and delivery expectations while keeping them within your company’s or organization’s website. Integrating status and delivery information for incoming packages or customer returns directly into your systems and processes so that you know when a package will arrive at your facilities. REST