# Open API

Helmut4 follows an API-first approach, where the entire UI is built on our API. In instances where you wish to automate or integrate Helmut4 with other third-party systems, our open API proves invaluable, providing an extremely powerful set of functionalities.

The link to our OpenAPI documentation can be accessed [here](http://repo.moovit24.de:8889/?urls.primaryName=Helmut4%20-%20Users)

<figure><img src="https://content.gitbook.com/content/JazOaknIWynmzOb8kuKL/blobs/JzBi0bDElnXyyDoQcDZm/image.png" alt=""><figcaption><p>Helmut4 API</p></figcaption></figure>

{% hint style="info" %}
If you have any questions regarding the use of our OpenAPI, please reach out to our support team via the [support portal ](https://docs.helmut.de/helmut4-releases/v4.9.0/support/requesting-support#moovits-support-portal)for assistance.\
\
Please be aware that the current accessible ***API definition*** is ***always referring*** to the ***latest Helmut4 release***.\
<https://docs.helmut.de/helmut4-releases/getting-started/open-api>
{% endhint %}