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
Mapping Web Tools APIs to USPS APIs
Use our mapping resources to help you transition to the new APIs you need for your platform.
Start with the clickable USPS API Functional Equivalents chart (PDF).
To use the USPS API Functional Equivalents chart:
- Find the Web Tools APIs you use.
- Click a Web Tools API name to get its Excel mapping spreadsheet.
- Each spreadsheet will show how the input/output fields in your legacy Web Tools APIs map to the new USPS APIs.
- Click the USPS API name to view the full specification in the USPS API Catalog.
Direct links to the USPS API input/output field mapping spreadsheets:
- USPS Address API - Web Tools Mapping.xlsx
- USPS Carrier Pickup API - Web Tools Mapping.xlsx
- USPS Domestic Label API - Web Tools Mapping.xlsx
- USPS International Label API - Web Tools Mapping.xlsx
- USPS SCAN Form API - Web Tools Mapping.xlsx
- USPS Tracking API - Web Tools Mapping.xlsx
- USPS Price API - Web Tools Mapping
- USPS International Price API - Web Tools Mapping
- USPS Shipping Options API - Web Tools Mapping
- USPS Service Standards API - Web Tools Mapping
- USPS Location API - Web Tools Mapping
Videos: How to Transition to USPS APIs
Get Transition Help from a Human
Live Support Webinar
Every Thursday at 2:00 PM ET (except Thanksgiving, Christmas, and New Year’s Day)
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 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!