# API documentation

## Quickstart

Our quickstart gives you a short explanation of how to use some of our products with [Javascript-Widget](/xs2a/integration-cs/integration-variants/javascript-widget.md) as an [integration variant](/xs2a/integration-cs/getting-started/decide-on-an-integration-variant.md).

{% embed url="<https://docs.xs2a.com/>" %}

## Technical documentation

Here you find all related information to the technical part of the integration. We provide information about our endpoints as well as request and response examples. If you try to find any information about a technical part of the integration make sure to have a look here.

{% embed url="<https://docs.xs2a.com/swagger/>" %}

## **OnlineÜberweisen documentation**

If you want to use our payment brand onlineüberweisen, we suggest reading the integration guide. &#x20;

{% embed url="<https://manage.onlineueberweisen.com/merchant/documentation/payments/api/payment/integration>" %}
Onlineüberweisen Integration Guide
{% endembed %}

Continue with the [next step](/xs2a/integration-cs/getting-started/decide-on-an-integration-variant.md) to get an overview of our integration variants.

{% content-ref url="/pages/-MMGYsau6vLOq5NZhdpS" %}
[Integration variants](/xs2a/integration-cs/getting-started/decide-on-an-integration-variant.md)
{% endcontent-ref %}


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Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
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```

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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.