Parsing nested JSON in Genesys v2.analytics.conversation.aggregate EventBridge payload

NICE CXone API & Integrations
1

I’m wrestling with the structure of the v2.analytics.conversation.aggregate event coming through EventBridge to our Lambda. It’s not just a flat object, and the nesting is deeper than I expected for a simple aggregate.

Here’s a snippet of the payload I’m seeing in the CloudWatch logs:

{
 "detail": {
 "data": [
 {
 "id": "abc-123",
 "metrics": {
 "queue": {
 "id": "456",
 "value": 120
 }
 }
 }
 ]
 }
}

My Python handler is failing when I try to access event['detail']['data'][0]['metrics']['queue']['value']. Sometimes the metrics key is missing entirely if no queue metrics were recorded for that interval, which throws a KeyError.

I’ve tried:

  • Using event.get('detail', {}).get('data', []) to handle missing top-level keys.
  • Checking if metrics exists before drilling down.
  • Looking at the CX as Code provider docs, but they don’t really cover runtime event parsing.

Is there a standard way to safely parse these aggregate events? The documentation for the analytics API is great for GET requests, but the webhook payload structure feels a bit opaque. I don’t want my Lambda crashing on every empty metric bucket.