Frequently Asked Questions

1. Do I need to register for an account with the U.S. Postal Service Web Tools?

   Yes, you need to register for an account with the U.S. Postal Service due to their licensing requirements on software developers.

2. What is the process for registering with the U.S. Postal Service Web Tools?

   You register for the U.S. Postal Service Web Tools on their web site at:
   http://www.usps.com/webtools/

3. I see other APIs on U.S. Postal Service Web Tools, do you support anything but the Rate Calculator?

   No, at this time, the only U.S. Postal Service Web Tools API that I support is the Rate Calculator. Even more granular than that, I only support the Domestic version of the Rate Calculator.

4. Do you save or store my U.S. Postal Service Web Tools user ID or password?

   No, this information is passed directly through to the U.S. Postal Service Web Tools. I do not save, store, or cache your user ID and password.

5. I'm getting an error, "XYZ" back from the U.S. Postal Service Web Tools, what does it mean?

   Well? I don't know. You'll need to contact the U.S. Postal Service for their specific error messages.

If you would like to ask a question, you may contact me via e-mail.