{ "version": "4", "groupKey": "...", "status": "firing", "receiver": "webhook-receiver", "groupLabels": { "alertname": "HighCPUUsage" }, "commonLabels": { "alertname": "HighCPUUsage", "instance": "server01", "severity": "critical" }, "commonAnnotations": { "summary": "High CPU usage detected" }, "alerts": [ { "status": "firing", "labels": { "alertname": "HighCPUUsage", "instance": "server01", "severity": "critical" }, "annotations": { "summary": "High CPU usage detected" }, "startsAt": "2025-07-17T07:00:00Z", "endsAt": "0001-01-01T00:00:00Z", "generatorURL": "http://prometheus.local/graph?g0.expr=..." } ] }