Web Tools APIs Shut Down January 25, 2026
Migrate NOW to USPS APIs
The Web Tools API platform shuts down on Monday, January 25, 2026. All Web Tools API users must switch now to USPS APIs.
- Act Now! Take the first step: Sign up for USPS APIs.
- See resources and submit support tickets below.
- Get live help in free, twice-monthly migration support webinars.

How to Switch to USPS APIs
I'm a Web Tools API Developer
- Sign up for USPS APIs.
- Use the API mapping spreadsheets to map your current Web Tools APIs to the corresponding USPS APIs.
- Refer to the help resources below and contact us if you need more help.
I use a third-party platform that uses Web Tools APIs
- Call or email your service provider to confirm they are migrating to USPS APIs. Only register for the legacy Web Tools APIs if your vendor or platform requires it.
Migrate to USPS APIs: Self-Serve Resources
Videos: How to Transition to USPS APIs
Get Transition Help from a Human
Live Support Webinar
Every other Thursday at 2:00 PM ET
Contact Us by Email or Phone
Technical questions and more information: Contact Internet Customer Care Center (ICCC; select "USPS APIs," then "Web Tools Migration") or call 1-800-344-7779
Hours of Operation
Monday–Friday: 8 AM–8:30 PM ET
Saturday: 8 AM–6PM ET
Closed: Sunday and Postal Holidays
Open 9 AM–6 PM ET on Columbus Day (Oct. 13) and Veterans Day (Nov. 11)
Legacy Web Tools API Resources (shutting down January 25, 2026):
- Web Tools 2025 Release Notes (PDF)
- Web Tools Documentation & Updates
- Only register for the legacy Web Tools APIs if your third-party software vendor or platform requires it. All other users should register for the new USPS APIs. Current Web Tools APIs users must transition off as soon as possible. Don’t delay; make the switch today!