# Payroc Cloud Simulator

Explains how to use the Payroc Cloud Simulator web app to test card-present payment requests in a virtual environment without a physical device or test card.

Our Payroc Cloud Simulator is a web app that simulates our Payroc App on a virtual payment device. You can use the simulator to send requests in a virtual environment without a payment device or a test card.

![Payroc Cloud Simulator Diagram](/assets/payroc-cloud-simulator-simulator-home-page.png)

<a id="before-you-begin"></a>
## Before you begin

Before you begin, make sure you have the following:

- A REST client, for example, Postman.
- Your processing terminal ID. We sent you the processing terminal ID when you signed up with us.
- Your integration API key. We sent you the API key when you signed up with us.

<a id="how-it-works"></a>
## How it works

To use the simulator, complete the following steps:

1. [Generate a Payroc App API key](/guides/api-keys/generate-a-payroc-app-api-key).
2. [Send test requests to our gateway](/guides/testing/send-test-requests-to-our-gateway):1. Access the simulator.
   2. Send a request.
   3. (Optional) Cancel the request.