USPS shipping info


Is this the information you wanted regarding USPS?

Thank you for registering for the U. S. Postal Service's Web Tools Application Program Interfaces (APIs). We are providing you with a User ID that serves multiple purposes, as explained below.

Your Username is xxxxxxxxxxxx
Your Password is xxxxxxxxxxxx

Your Web Tools User ID, shown above, is required to test and integrate USPS Web Tools APIs. With this ID, you may begin sending calls to the test server. Depending on the API, the address to the test server is either or Use this information in combination with your User ID and your XML string to send a request to the USPS servers. For more details, refer to the programming guides (located at for the specific API you are integrating.

A sample test request would look like: "[API_Name]&XML=[XML_String_containing_User_ID]"

When you have completed your testing, email the USPS Internet Customer Care Center (ICCC). They will switch your profile to allow you access to the production server and will provide you with the production URLs.

The ICCC is staffed from 7:00AM to 11:00PM Eastern Time.

E-mail: [email protected]
Telephone: 1-800-344-7779

The latest versions of the technical documentation, including the Development Guide, are available from at This documentation provides the information you will need to utilize our APIs. It is available in both PDF and HTML formats. In order to open and view in PDF you must have Adobe Reader installed on your system. You may download this software, at no cost, from


The Web Tools User ID provided is for you and your company to use when requesting data via the Internet from the U.S. Postal Service API servers. This unique User ID cannot be shared with others outside your organization, nor is it to be packaged and distributed or sold to other individuals, businesses or e-commerce web site entities. As per the Terms and Conditions of Use Agreement you agreed to during the Web Tools registration process, you are responsible to maintain the confidentiality of your User ID as specified. You may not package any APIs with your User ID for resale or distribution to others. The U.S. Postal Service does not prohibit the reuse and/or distribution of the API documentation (User's Guide) with sample code in order to generate awareness, encourage use or provide ease-of-use to customers or affiliates.

Warning - If the U.S. Postal Service discovers use of the same User ID from more than one web site, all users will be subject to loss of access to the USPS production server and/or termination of the licenses granted under the Terms and Conditions of Use. For more information regarding the USPS Web Tools User ID policy, or for questions regarding distribution of documentation, send email to [email protected].

Thank you for helping the U.S. Postal Service provide new services to our shipping customers.


The Internet Shipping Solutions Team

USPS Internet Customer Care Center
[email protected]
7:00AM - 11:00PM EST




Alonza Robertson | Project Manager | Trellon, LLC
web - | email - [email protected]
tel - 281.781.4111 | aim - alphadiamond13