Developer Resources for Our Payment Integration API

A few lines of code is all it takes to integrate our payment API for developers.
A few lines more will unleash features and flexibility you never dreamed of!

Integrate Cardknox Payments with a few lines of code...

In-store API Payment Integration

Tightly integrate out-of-scope, in-store payments including EMV chip card, ACH, Gift Card, EBT Food Stamp, EBT Cash Benefits, and EBT eWIC.

Get integration support BBPOS Documentation View our supported EMV equipment

E-commerce Integration

Enjoy a robust API supporting recurring payments, proprietary card updater, guaranteed fraud decisions, and advanced tokenization. Or choose from shopping cart plug-ins, gateway emulators and hosted payment forms.

WooCommerce Plugin for WordPress Magento 2.0 plugin iFields Documentation PaymentSITE Get integration support

Mobile Integration

Intergrate SDK for iOS and Android for card-not-present and card-present mobile transactions with native support for mPOS EMV chip-card hardware and processing.

Get integration support

API Documentation

View our API documentation reference guide and use our sample code generator to build sample recipes and run in-browser test transactions.

Explore API Documentation Recurring API Documentation

One-on-one Integration Support


  • Support by phone

    The easiest and fastest way to get the support you need.

    844-227-3566


  • Support by email

    Send us an email if your request is more complicated.

    Ask a question

Ready to get started?

Create a sandbox account and start your EMV integration.