SDKs

C# SDK

https://github.com/epay3/epay3.Sdk
The C# SDK contains all the tools you need to integrate with the ePayPolicy API. This SDK includes integration tests with settings (see the app.config file) that call out to the specified API instance to execute transactions.

PHP SDK

https://github.com/epay3/epay3-php-sdk
This  PHP package supports the processing of credit card and eCheck/ACH payments. It is automatically generated by the Swagger Codegen project.