OpenCart v2.2.x +
Cardinity is integrated into Opencart 2.x
- To start using Cardinity module, download the latest version of Opencart from https://www.opencart.com/
- Navigate to Extensions -> Extensions
- Choose Payments extension type.
- Find Cardinity module and click the Install button to install the extension.
- Click the Edit button
- Insert your API Key and Secret and set status to Enabled
- Click Save button
Opencart 1.4.9 - 2.x
The documentation for older versions can be found here.