Gateway
Using the Payment Gateway through the Payrexx API is the most customisable integration option.

Requirements

Before you start developing you need a few things...
  • Payrexx account: Signup here
  • A fully set up payment provider which fits your needs: PSP Features
  • API credentials: Find them in your Payrexx account under API & Integration
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Process - Gateway

Preparation

First you have to choose one of the available payment types. This will be needed once you start building your Gateway
If you want to make one-time payments, you can skip this step. Because one-time is the default type.

Start Building

Finally! You can now start developing.
Detailed process description from the Gateway creation until after payment completion:

Next Steps

Receive Transaction Data - Webhook

All about the Payrexx Webhook:
Shape and content of your transaction or subscription Webhook:
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Requirements
Process - Gateway
Preparation
Start Building
Next Steps
Receive Transaction Data - Webhook