> For the complete documentation index, see [llms.txt](https://help.sipgate.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.sipgate.de/cloud-telefonanlage/en/connections-and-integrations/api/was-ist-die-sipgate-api-und-welche-funktionen-bietet-sie.md).

# What is the sipgate API and which functions does it offer?

{% hint style="info" %}
**Note:** This feature is only available to customers on **sipgate classic** is available. On sipgate neo, the feature is integrated in a different form.
{% endhint %}

The sipgate API (Application Programming Interface; German: program interface) provides the **functionality** of the sipgate platform **for external applications** . The sipgate API offers functions in the following areas:

* Making telephone calls
* Sending SMS
* Sending and receiving fax messages
* Retrieving credit information
* Access to the event list (data on calls, fax messages, voicemails, and SMS)
* Access to voicemails
* Provisioning data for VoIP endpoints

In addition, information such as sender, recipient, and timestamp is generally available for all elements of the event list. Furthermore, for **voicemail, fax, and SMS** for example, the content can be downloaded as a file.

All information about the sipgate API is bundled and documented in detail on the [sipgate.io](https://www.sipgate.io) homepage.

**Who do I contact if I have problems with the sipgate API?**

If you have questions about the REST API and the sipgate.io Push API, contact our developer team directly. You can reach us

* by email at <tech@sipgate.io>

As a discussion platform for developers, we have a [**mailing list**](http://groups.google.com/group/sipgate-api) set up, where you can sign up.


---

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