Recent versions of the Hue Bridge firmware are exposing a new API version for the Hue system. The API v2 does support "push" style notifications for every change in the system, without the need for polling the Bridge.

Read the official documentation

The Hue Bridge is now exposing an endpoint using Server-Sent Events (SSE).

The new APIs are ONLY available when using HTTPS so make sure you're connecting using HTTPS.

This library will automatically try to reconnect on failure.

const { SSEClient } = require('@homegraph/philips-hue-push-client');

const huePush = new SSEClient(
  'https://YOUR_BRIDGE_IP:443',
  'YOUR_API_KEY',
);

huePush.on('connected', () => console.log('Connected to the Hue Bridge'));
huePush.on('update', (data) => console.log('UPDATE RECEIVED', data));
huePush.on('error', (err) => console.error('ERROR RECEIVED, implement your logic here', err));

huePush.connect();

// To close the connection with the bridge:
// huePush.close();

Payload example:

{
  "resource": "lights",
  "idv1": "38",
  "idv2": "3dba6784-3fa6-4e51-979c-daed68cad240",
  "creationTime": "2021-01-01T15:32:04Z",
  "dimming": { "brightness": 100 },
  "color": { "xy": { "x": 0.3691, "y": 0.3719 } },
  "color_temperature": { "mirek": 233 }
}

• resource is the Hue API v1 resource name (e.g. lights, groups, sensors, etc)
• idv1 is the Hue API v1 resource ID (in this example this light is available under /lights/38)
• idv2 is the Hue API v2 resource ID. It looks like the API v2 is using UUIDs instead of incremental numeric IDs
• all remaining props as per documentation