# Overview

You can choose from the following integration options

* [Gateway](/developer/guides/gateway.md): Customizable checkout form for all use cases
* [Payrexx Tools](https://help.payrexx.com/account/tools): Ready-to-use payment tools designed for specific needs

## Integration - Gateway

### Use an existing Gateway

For certain e-commerce tools, business software or content management systems, we provide ready-to-use integrations. Check here to find out if a solution for your specific application already exists:

{% embed url="<https://help.payrexx.com/integration>" %}

### Build your own Gateway

Find out everything you need to realise your very own custom integration.

{% content-ref url="/pages/-McyibybUyD3IBUBkelB" %}
[Accept Payment](/developer/guides/gateway.md)
{% endcontent-ref %}

You can embed your Gateway in **mobile JS apps**, **custom websites** and **shops** etc.\
Here we show you all options and how it works.

{% content-ref url="/pages/-MgGcGkUqucB2a6vWc\_E" %}
[Embedding](/developer/guides/embedding.md)
{% endcontent-ref %}

## Integration - Payrexx Tools

Payrexx offers a variety of different tools. No development skills are needed to use these.\
Find all tools and their features in our merchant documentation.

{% embed url="<https://docs.payrexx.com/merchant/payrexx-administration/tools>" fullWidth="false" %}

There are multiple options embedding the Payrexx tools. Find out more.

{% content-ref url="/pages/-MgGcGkUqucB2a6vWc\_E" %}
[Embedding](/developer/guides/embedding.md)
{% endcontent-ref %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

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

```
GET https://docs.payrexx.com/developer/readme.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

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.