Custom API response

Hi guys!

I am making an AR application and I would like to see the live information about my devices in it. I am having trouble getting the data from HA to my application. My first thought was via API rest of webhooks. But I can’t find a way to make a custom api call or a custom response. Is there a way to have a custom response from the HA api.

Thanks in advance

If your application can support MQTT then it can receive live updates via the MQTT Statestream integration.