> For the complete documentation index, see [llms.txt](https://martin-verbeek.gitbook.io/homey-google-nest-sdm/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://martin-verbeek.gitbook.io/homey-google-nest-sdm/english-guide/app-setup.md).

# App Setup

{% hint style="info" %}
When you ony want to add Nest Protect devices, the only thing you need to do is to set up the Legacy Nest access [Legacy Nest access](/homey-google-nest-sdm/english-guide/app-setup/legacy-nest-access.md)
{% endhint %}

The set up of the Google Nest SDM requires a couple of tasks to be performed in strict order.

* Install HCS App and Nest SDM App on your Homey
* Create a Google Cloud Project
* Create a Device Access Project
* Authorise and link these two projects by using a Login.
* If you have Nest Protect  and/or want additional capabilities for your devices you also need to get Legacy Nest access arranged.