Address Matching System API (AMS API)
AMS API is software used to develop address matching software. This software provides access to USPS® matching logic, which allows users to verify the accuracy of ZIP + 4® returns.
Who is AMS API for?
AMS API may be integrated within a manufacturer's product and redistributed by the manufacturer. The DPV®, LACSLink®, RDI™ and eLOT® files can be used in conjunction with the AMS API Developer's Kit.
What is AMS API?
AMS API is software used to develop address matching software that provides access to USPS matching logic, which allows users to verify the accuracy of ZIP + 4 returns.
AMS API contains the following information:
- API library(s) for each specific computer platform
- Interface definition file (ZIP4.H)
- Test utility (SAMPLE.EXE)
- Test utility source code
- Sample configuration data files
- User documentation
The test utility can be used to ensure the Address Matching System and data files have been installed correctly and to provide access to USPS matching logic, which displays the standardized address returned by the matching engine. Additionally, the AMS software, including but not limited to .DLL files, shared objects, and static objects all expire and cease functionality based on the CASS™ guidelines.
The AMS API Product is updated monthly via Electronic Product Fulfillment.
Note: CASS certification is not a requirement for the AMS API Product. However, to receive automation discounts, users must obtain CASS certification.
Annual License Fee: Pricing varies depending on the products and platforms used.
Licensing information for AMS API can be found here.
The AMS API License Agreement requires signature compliance and subscriptions are maintained on a calendar year basis. The RDI Product requires a direct license from the USPS.
Applications/ Forms 07/30/2018
This Modifications document lists the changes to the current Address Matching System Application Program Interface (AMS API) Product License Agreement.
Fact Sheets 01/22/2018
This document outlines the AMS API prorated fee structure.
Applications/ Forms 01/22/2018
Order form for the AMS API product.
Applications/ Forms 07/13/2018
United States Postal Service® sample license agreement for the Address Matching System Application Program Interface (AMS API) Product.
Primary Audience: AMS API Licensees
Address Matching System API (AMS API) Announcements
Primary Audience: AMS API Licensees
Release Notes 08/26/2016
The Electronic Product Fulfillment (EPF) REST Web Services document has been updated to include both USPS® and Akamai server calls.
Release Notes 08/05/2016
In an effort to facilitate and grow the packaged‐service business, the USPS® has made the decision to include the PO Box Throwback table in the AMS API Product.
Licensing Announcement: Updated Electronic Product Fulfillment (EPF) Download Manager (July 27, 2016)
Download Managaer for DSF2®, DPV®, NCOALink®, SuiteLink®, and AMS API.
As a reminder, to align with the terms set forth in license agreements for other USPS® Licensed Products, the license terms for the AMS API Product were modified to the license term year of October 1 through September 30.
The Electronic Product Fulfillment (EPF) website will be unavailable Tuesday, April 5 from 6:00 pm to 10:00 pm Central time for scheduled maintenance.
Release Notes 03/09/2016
This announcement provides details regarding how the USPS® does not sign Inter‐Agency Agreement (IAA) forms.
Release Notes 06/02/2015
In effort to better assist you with transition from the AIX and SUN operating platforms, the USPS will now allow AMS API customers to continue using the discontinued platforms.
Release Notes 06/06/2014
As a reminder, effective July 31, 2015, the USPS® will no longer support the AIX, Sun and Sun 64-bit operating platforms.
As a reminder, the Electronic Product Fulfillment (EPF) website will be migrated to a new server Saturday, March 15.
The Electronic Product Fulfillment (EPF) website is tentatively scheduled for migration to new web servers on March 15, 2014.
Release Notes 07/01/2012
This letter is to inform AMS API customers that we have recently made a change to the way we build the Linux 32-bit version of the AME library.
Release Notes 07/13/2007
As a reminder, the CASS™ 2006-2007 (Cycle K) version of the AMS API Product ceased to function effective August 1, 2007.
Release Notes 01/11/2008
Z4DPV allows end users to directly access the DPV™ segment of the CASS™ process to validate an address.
As a reminder, to ensure USPS notices and announcements are disseminated to the appropriate contacts within your company, Licensees are required to establish a centralized email address.
All materials related to USPS Licensed Products, including but not limited to, license agreements, audits, test decks, reports, equipment, etc., to be returned to USPS must use USPS as the carrier.
To obtain order forms or more information about AMS API, contact the National Customer Support Center at 877-640-0724