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Authorize.Net API

From their site: Since 1996, Authorize.Net has been a leading provider of Internet Protocol (IP) based payment gateway services, enabling merchants to authorize, settle and manage credit card and electronic check transactions from a Web site, retail store, mail order/telephone order (MOTO) call center or mobile device. All you need to authorize and process payments through Authorize.Net is a live Internet connection and the ability to emulate an HTML Form Post using a Secure Sockets Layer (SSL) connection.

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Authorize.Net: Highlights

Internet based payment gateway services
Data Formats
API home

Authorize.Net: Specifications


Client Install Required
Service Endpoint
https://secure.authorize.net/gateway/transact ...

Signup and Licensing

Signup Requirements
Partner Account  
Developer Key Required
Account Required
Commercial Licensing
Non-Commercial Lic.
Data Licensing
Usage Fees
Program Fees
Certification Program
Usage Limits
Terms of Service


Authentication Model
API Key, Transaction Key 
SSL Support
Read-only Without Login


Vendor API Kits
C#, Java, Ruby, PHP, VB.NET, Cold Fusion 
Community API Kits
API Blog
Site Blog
API Forum
Developer Support
Console URL

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Mashups, Developers & Source Code

Developers using Authorize.Net[ Add me ]

  • fractalien
  • soundcommerce
  • jp
  • softpark

PW Recommends


May 29, 2009
at 23:43
Comment by: progwiz

I have been using free Oscommerce shopping cart with Authorize.net the last 5 years, which very easy to setup. It is only $7 at www.unitedbankservice.com if anyone is looking for an inexpensive solution.

March 30, 2009
at 17:46
Comment by: menexis

the authorize.net API is quite simple to use. We at menexis have been utilizing their platform for years now. They also have a great support system

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