API Overview

Payment21® can be integrated easily via our API technology

Payment21® Instant eCheck™ API is a HTML-based solution that allows your customers to select an alternative payment method on your website using Instant eCheck™ to pay for goods and services online.

Customer data and checking information related to ACH transactions and Check 21 items can be passed on safely from your website to our database via the API linkage. We offer different ways to integrate our Application Programming Interface depending upon the size and needs of your website. The Payment21® Instant eCheck™ API provides a secured, lightweight and accurate method by which to communicate and send/receive highly sensitive data with or without leaving your web page. Payment21® offers different integration methods to suit each individual merchant's needs: 

• Payment21® Button is the easiest integration method. All you need to do is to copy and paste a short HTML code only in order to route traffic to Payment21®. This solution is designed especially for small merchants.
• Payment21® Simple API is best suited to medium and small merchants who do not wish to allocate many resources to the integration process. Integration is simple and your customer traffic remains on your website. This offers a broad range of control options with regards to your corporate identity.
• Payment21® XML/SOAP API is for larger merchants who take advantage of the full-fledged integration service. This solution involves some technical development on the merchant's end, but in return allows for the highest degree of customization.
• Payment21® Recurring Billing allows your customers to choose from your pre-defined recurring billing plans.
• Shopping Carts like CS-Cart, Magento, OpenCart, osCommerce, ZenCart, Shopify and Joomla-VirtueMart have already integrated our payment method so you are able to set up Payment21® Instant eCheck™ with minimal effort. A sign-up with Payment21® is required. 

Benefits of using Payment21® Instant eCheck™ API:

• Your website attracts U.S.-based customers who cannot pay by credit card.
• Payment21® Instant eCheck™ API is safe and easy to implement.
• Instant eCheck™ allows you to accept customized online check payments from the U.S. via the ACH Network or the Check 21 environment.
• Your developers integrate a viable payment method quickly. Test the different application programming interfaces on our Instant eCheck™ demo store. 

Begin accepting Instant eCheck™ payments in 5 easy steps.