About this guide
Secupay's pay simple and safe system enables online processing of payment transactions in Internet shops and on Internet portals. This guide describes how to handle e-commerce payments with the Flex.API, version 2. There are other integration guides for the secuconnect API, or to integrate more sophisticated services for marketplaces, crowd investment platforms, and the like.
It begins with an example to get you started. You should study this thoroughly to understand the essentials. After you have achieved this, you can refer to the remaining sections as needed.