The Cardknox API integrates payments into online, mobile, and in-store applications. It uses the same URL for sandbox and live accounts and it requires xKey to authenticate. The API supports Credit Card, Check (ACH), EBT, Gift Card and Fraud Protection transactions. Cardknox is a developer-friendly payment system.
Sixteen APIs have been added to the ProgrammableWeb directory in categories including Music, Transportation and Medical Recrods. Highlights include an API for soliving invisible CAPTCHA and an API for scanning user uploaded files for malware and spam. Here's a rundown of the latest additions.