> For the complete documentation index, see [llms.txt](https://docs.solutioo.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.solutioo.de/vr-payment-gateway/vr-payment-gateway_en_us/getting-started/vr-payment-account.md).

# VR Payment account and API access

The app authenticates with JWT (HS256) against the VR Payment Gateway REST API v2.0. You need three values from the VR Payment back office.

{% stepper %}
{% step %}

#### Open the back office

Sign in at <https://gateway.vr-payment.de>. Use the test space for trials and the live space for production.
{% endstep %}

{% step %}

#### Note the Space ID

Each space has a numeric **Space ID**. Enter the live ID in **Space ID** and the test ID in **Test Space ID** on VR Payment Setup.
{% endstep %}

{% step %}

#### Create an application user

Create an application user and note the **User ID** and **Authentication Key**. The app stores the key as **API Key** (masked).
{% endstep %}
{% endstepper %}

{% hint style="warning" %}
Treat the API key like a password. Do not paste it into tickets, chat logs, or email in clear text.
{% endhint %}

{% hint style="info" %}
In **Sandbox mode** the app uses the test Space ID and appends PREVIEW parameters to payment-link URLs. Sandbox and test space must match.
{% endhint %}

The default API URL is `https://gateway.vr-payment.de`. Change it only if VR Payment gives you a different base URL.


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