> For the complete documentation index, see [llms.txt](https://dev.xena.biz/xena-developer/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dev.xena.biz/xena-developer/master.md).

# Introduction

## What can you do with the Xena API?

With our API you can integrate your systems with the online accounting system Xena. We also allow for external developers to build, publish and earn money with their own apps in the Xena App Store.

EG Xena has multiple ways to interact with external systems:

* Build [custom plugin](/xena-developer/development/get-started/createplugin.md) applications - UI integration
* Integrate your Xena data with other business applications with [Direct API calls](/xena-developer/development/get-started/the-xena-api.md) – request based
* [Webhook callbacks](/xena-developer/development/get-started/using-webhooks.md) - event based integration
* Save meta data on objects in Xena (e.g. an order or a partner)

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For a complete overview of the Xena API, please go to <https://xena.biz/api-doc/>
{% endhint %}

{% embed url="<https://www.youtube.com/watch?v=JEEfYtWV3X4>" %}

### Feedback and support

You are always welcome to [write us with questions and feedback](mailto:developer@xena.biz).

### Are you a developer?

Join the adventure! Become a Xena Partner and submit your app. [Get in touch](mailto:developer@xena.biz).