Partner backend integration

This is a central FlexCharge / Partner integration to simplify the integration effort of the Partner's merchants willing to use the FlexCharge service.

Data flow

Steps in red are performed by you, the ones in gray are done by your merchant.

Steps in red are performed by you, the ones in gray are done by your merchant.

Step 1. Create a Sandbox account

If you don't already have a Sandbox account with the required credentials to start using our APIs, you can request one at [email protected]

Step 2. Authentication

All API requests are made over HTTPS. Requests without authentication will fail.

How to authenticate.

Step 3. Transmit API

The Transmit API needs to receive a copy of each processed payment transaction (authorized or declined) related to any of your orders. The data sent the Transmit API is used to build customer profiles and DOES NOT activate the FlexCharge service.

Once transmitted, our API will respond with a transaction key.
This key can be used to update the order object, for example with its outcome.

How to implement /transmit.

Step 4. Evaluate API

PCI data needs to be tokenized for this step.

Payment Method tokenization

Your tokenization key can be found on the Developers > Tokenization section on the merchant portal.

How to /tokenize.


On declined/failed transactions, you will have to invoke FlexCharge's Evaluate API.

This ACTIVATES the FlexCharge service.

How to implement /evaluate

Your integration is now done

You can now test transactions in your test environment.

Don't have a test environment? Ask us and we'll set up one for you.