Event object

An Event object represents one point in an alert timeline. It captures the event type, aggregate alert state at that point, and optionally the per-metric changes that were part of the event.

Notes

• id combines the alert ID and sequence number
• sequence increases over the lifetime of an alert
• changes can be omitted from list responses unless explicitly expanded

Attributes

Field	Type	Description
id	string	Event identifier, typically alertId|sequence
sequence	integer	Sequence number within the alert timeline
eventType	string	Event type, for example created, updated, or closed
eventOccurred	datetime	Timestamp when the event occurred
active	boolean	Whether the alert remained active after this event
impact	string	Aggregate impact at this timeline point
activeNodes	integer	Number of active nodes at this timeline point
activeMetrics	integer	Number of active metrics at this timeline point
score	number	Aggregate score at this timeline point
learningStatus	number	Aggregate learning-status value at this timeline point
changes	array	List of change entries attached to the event

Change entry attributes

Field	Type	Description
type	string	Change type, such as updated
nodeId	integer	Node identifier
nodeName	string	Node display name
statTypeId	string	Metric type identifier
statTypeName	string	Metric display name
systemId	integer	System identifier
systemName	string	System display name
values.score.contribution	number	Metric score contribution
values.score.adjusted	number	Adjusted metric score
values.learningStatus	number	Learning-status value for the metric at this event
values.severity	string	Metric severity at this event
values.type	string	Metric anomaly type at this event, for example deviation or missing_data
values.closestBaselineDeviation	number	Distance from the closest baseline corridor when available

Example

{
  "id": "alert-123|00000005",
  "sequence": 5,
  "eventType": "updated",
  "eventOccurred": "2025-11-13T10:25:00Z",
  "active": true,
  "impact": "high",
  "activeNodes": 3,
  "activeMetrics": 4,
  "score": 2.3,
  "learningStatus": 1,
  "changes": [
    {
      "type": "updated",
      "nodeId": 10,
      "nodeName": "Order Service",
      "statTypeId": "3ef542f1-2c80-4c83-ae06-8741857ed78a",
      "statTypeName": "CPU Usage",
      "systemId": 101,
      "systemName": "Prod Cluster",
      "values": {
        "score": {
          "contribution": 0.9,
          "adjusted": 1.7
        },
        "learningStatus": 0,
        "severity": "red",
        "type": "deviation",
        "closestBaselineDeviation": 2.4
      }
    }
  ]
}