---
title: Before you start
description: If you are a developer of any solution for merchant services, you can easily connect with our solution via API. Using this API you can easily call a card payment which will initiate our payment app. We will then return…
url: "https://www.gptom.com/el/docs/manual/api/before-you-start/"
updated: "2026-10-21"
category: API
---

# Before you start

If you are a developer of any solution for merchant services, you can easily connect with our solution via API. Using this API you can easily call a card payment which will initiate our payment app. We will then return the payment result directly into your app and redirect user. We are also providing other methods and functionalities which are related to payments (cancellations, close batch, transaction status and others).      ![](http://www.gptom.com/wp-content/uploads/2022/04/information.png)  Pricing conditions  Whole integration process is for free. We are happy to have you in our partner list!      Genius mobile pay application supports Android 8 and higher at the moment. Application requires NFC chip built in device and Internet connection via SIM card or Wi-Fi.  Which integration method we do support today:       app2app API  Purpose of this API is to connect Android based application installed on same device as Genius mobile pay.  ![](http://www.gptom.com/wp-content/uploads/2022/04/app2app_image.png.webp)  PŘIPRAVUJEME    cloud API  Brand new cloud API allows you to initiate the activity (payment and other tasks) in Genius mobile pay from any device connected to the Internet.  ![](http://www.gptom.com/wp-content/uploads/2022/04/cloudapi_image.png.webp)  PŘIPRAVUJEME      What you can do with API?   Through the API you can invoke a payment in the Genius mobile pay application, you can also cancel the payment through the API. For both in the response you receive transaction data that is used, for example, for receipts. Closing a batch can also be initiated through the API.

In both cases you will get the receipt data to be able to create a financial receipt on your side. To know more, please visit this page.

  How to integrate API in three simple steps   Integration itself is very easy and you can do it in three easy steps.

**First step**

Contact us at support@gptom.com (we will be happy for the link to the application you want to connect to us).

Download the simulator, source integration example or other details here. For integration you can find the testing credentials here:

      for CZ country  currency: CZK
 username: gpatomcz@email.cz
 password: Integrace26+    for other countries  currency: EUR
 username: gpatomsk@email.cz
 password: Integracia26+      If there is no TID available please contact us.

**Second step**

You will carry out the integration on your side using the available documents and, if necessary, with our support. Once you've completed the development, you'll let us know you're done.

**Third step**

We will ask you for a demo access to your application so that we can test the connection that everything works as it should. We will place a link to your company on our website and materials and we will present you as a partner supporting our solution. You can immediately acquire new clients directly from our portfolio. That is all!

  Conclusion  In case of any questions do not hesitate to contact us at support@gptom.com we will be happy to answer all your questions.

We will be also happy to receive feedback from you during the integration, whether everything is as you imagined and whether you have any suggestions for improvement. At the same time, by being present in our environment, you can be sure that you will always have the latest information about news or changes.