Helcim Merchant Services & Credit Card Processing United States Helcim Merchant Services Canada

Payment Gateway API

Integrate payments directly into your website, shopping cart, billing or app.

Helcim Gateway API

Custom Payment Integration

Our Payment Gateway API lets you easily integrate credit card processing directly into your website, shopping cart, billing system or application. Transaction information is transmitted via HTTP-POST and can be programmed in any language including PHP, .NET, Java, Ruby, Perl and Python.

The API allows transactions to be processed seamlessly while customers never leave your website. Transactions that can be processed include sales, pre-authorizations, captures, voids, refunds, recurring payments and card-tokens and more. Visit our Developer Documentation to get started.

Credit Card Vault

Store Credit Cards with the Helcim Card Vault

Our API allows you to reuse credit cards anytime without having to store sensitive card information locally on your own servers. When a transaction is processed, we provide you with an alphanumeric token. When you are ready to reuse the credit card number, you simply send the token as part of the transaction information instead of the card number. This is called "card tokenization".

Learn more about credit card tokenization.


Web Developers

Whether you're a developer working on your small business website, programming a payment solution for a client or working on a large software project, we believe that our Payment Gateway will provide you with the advanced features and level of service that you need to make your payments seamless and secure.

Permanent Developer Account

Request a permanent developer account. You will receive a unique username and password within one business day. This permanent demo account can be used to develop and test any of your payment projects.

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The Helcim name and logo are trademarks of Helcim Inc. The Visa and MasterCard logos are trademarks of Visa International and MasterCard International Incorporated. Other tradenames may be trademarks of their respective owners. Helcim is a registered MSP/ISO of Elavon, Inc. Georgia [,a wholly owned subsidiary of U.S. Bancorp, Minneapolis, MN]. New applicants are subject to conditions and approval of the application by Helcim and its partnering banks.