Screen: ShopSite > Commerce Setup > Shipping > U.S. Postal Service

U.S. Postal Service Shipping API Registration

Before you can configure and begin using U.S. Postal Service real-time shipping quotes, you must have a business account and register an APP to use their APIs. Complete the following steps:

  1. Follow the USPS Getting Started Guide - Go to the USPS Getting Started page and complete only the first 3 Steps. If you do not have a business account you will be given the opportunity to set one up.
  2. Enter the Key and Secret - From the USPS Portal, copy your Consumer Key and Consumer Secret into the respective ShopSite back office fields. On the USPS portal the fields can be viewed by slecting My Apps at the top of the screen, then selecting Developers Apps, and finally, clicking the Manage button.
  3. Save your Settings - Click Save to save your account information.

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Last updated: January 09, 2026
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