[Baypiggies] CASS certified Postal Mail Verification free RESTful API?

Glen Jarvis glen at glenjarvis.com
Fri Aug 19 01:04:54 CEST 2011

I have the need to consume an API service. I'd like it to be an Open
Source/Creative Commons service instead of paying for it.

There are several commercial equivalent RESTful APIs that I could consume.
Some examples follow:

* http://www.cdyne.com/terms/address-standardization.aspx
* http://www.experian.com/small-business/address-verification.jsp

The reason I want to consume this service is to verify that if I have a
business from one source and I want to intelligently/programmatically match
that same business from another source, one of the steps in that
validation/verification is to compare addresses.

Half way through looking at this, I think "There's no API to do this. I
could make a Python service to do this as an open source project." Any time
I get in that mode, I usually find someone has attempted it or has a very
successful version of it already running.

Q1) Does anyone know of a package/service that already exists like this --
as a free API?

Q2) If the answer to Q1 is no, then I want to create an open source
project/free service that is consumable by anyone. I am looking for the
original data from the USPS. Does anyone know where I can find it.

I've found other resources, such as these:

This is the US Government certification for evaluation of such software:


A list of software suppliers that already do this:

Tech Guidelines:

Example Error codes

I'm still trolling through data to find something. I'd hate to do all of
this work if someone else already provides this service. I am also trying to
find the raw address data.

Thanks in advance for any help that you may provide....


Things which matter most must never be at the mercy of things which matter

-- Goethe
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