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USPS Web Tools API Upgrade

USPS Web Tools API Upgrades and ShipperHQ 

Quick Overview

  • USPS is making upcoming changes to its Web Tools API.

  • No action is required from merchants at this time. 

  • Our team is actively updating our systems to ensure uninterrupted USPS rate functionality.

  • Additional communications will be sent as USPS approaches the official release.

What’s Changing?

USPS has announced updates to its Web Tools API, which will be rolled out ahead of a planned retirement of legacy endpoints. These updates may impact how shipping rates and services are retrieved, but merchants will not need to make any changes.

How We’re Preparing

Our development team is already implementing the necessary updates to ensure:

  • Continued access to USPS rates

  • No disruption to checkout

  • A smooth transition well before USPS’s final migration

What You Need to Do

At this time, no action is required. Our system updates will be applied automatically. If the upcoming USPS changes require account revalidation, we will clearly communicate those steps as we begin rolling out the updated USPS integration. 

Ongoing Updates

As we move closer to the USPS release timeline, we will send follow‑up communications to all merchants who use USPS services. These updates will include any relevant details about timing, feature changes, or improvements.