# Notify device groups

> Your API Key is required for making any requests using our API, you can find it inside the console integrations page (<https://push.techulus.com/console/integrations>) or `Account` tab in mobile app. Team API keys can be found in the team details screen.

{% hint style="info" %}
**The authentication header (API Key) to be specified in the request is `x-api-key`**
{% endhint %}

{% openapi src="<https://3949046982-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lt89BeSuYfwUX8PpQ6V%2Fuploads%2FmJuOUe5RPz05aOwYDuY5%2Fopenapi.yaml?alt=media&token=8da10805-d5b6-4423-9819-04f51986ab5d>" path="/notify/group/{groupId}" method="post" %}
[openapi.yaml](https://3949046982-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Lt89BeSuYfwUX8PpQ6V%2Fuploads%2FmJuOUe5RPz05aOwYDuY5%2Fopenapi.yaml?alt=media\&token=8da10805-d5b6-4423-9819-04f51986ab5d)
{% endopenapi %}