Web Tools Developer Resource Center

Create innovative solutions to help you or your clients make shipping easier by integrating USPS Web Tools® in just 3 simple steps.

View Technical Documents file list for Step-by-step instructions and test codes for integration

Step 1. Register

Get access to Web Tools APIs through our simple registration process.

Register Now with the USPS Web Tools Registration Form

Step 2. Develop

Once you've completed integration, you'll need to submit a request to promote tools to production.

View List of APIs

Step 3. Go Live

Once you've completed integration, you'll need to submit a request to promote tools to production.

Hide Details about contacting the Internet Customer Care Center

Once you have received the correct test API responses, call or email the Internet Customer Care Center (ICCC) with the following request: “Please move User ID {Insert your Web Tools User ID here} to the production server.”

ICCC Contact Information:
E-mail: uspstechnicalsupport@mailps.custhelp.com
Telephone: 1-800-344-7779

Once your profile is moved to production you will receive an email with the production server URLs. Once you replace the test URL of your test scripts with the production URL you will be able to send and receive live data.

ICCC Hours of Operation

Monday – Friday: 8:00am-8:30pm EST
Saturday: 8:00am-6:00pm EST
Closed: Sunday and Postal Holidays
Open Holidays: 9:00am-6:00pm EST

  • Martin Luther King Day
  • President's Day
  • Columbus Day
  • Veteran's Day

Hire a Professional Integrator

Browse a list of E-commerce API Service Integrators who may be able to help you integrate USPS Web Tools into your software applications or web site.

View List of API integrators

Want to Be a Web Tools Integrator?

Follow step-by-step instructions to become a Certified E-commerce API Integrator.

Get Started file for How to become a Web Tools Integrator