Event Types

Every webhook event Trasys can deliver, including alert.fired, incident.created, incident.updated, and incident.resolved, with full JSON payload schemas.

Every webhook POST has this top-level shape:

{
  "event": "<event-type>",
  "data": { ... },
  "attempt": 1
}

event — the event type string (see below)
data — event-specific payload
attempt — 1 for the first delivery, 2 for the retry

alert.fired

Sent when an alert rule threshold is crossed and an incident is created.

{
  "event": "alert.fired",
  "data": {
    "ruleId": "a1b2c3d4-...",
    "ruleName": "High error rate",
    "metricValue": 12.4,
    "incidentId": "e5f6a7b8-...",
    "triggeredAt": "2026-06-18T10:00:00.000Z"
  },
  "attempt": 1
}

alert.resolved

Sent when an alert rule returns to a normal state after firing.

{
  "event": "alert.resolved",
  "data": {
    "ruleId": "a1b2c3d4-...",
    "resolvedAt": "2026-06-18T10:30:00.000Z"
  },
  "attempt": 1
}

incident.created

Sent immediately after an incident row is created (fires alongside alert.fired).

{
  "event": "incident.created",
  "data": {
    "incidentId": "e5f6a7b8-...",
    "projectId": "...",
    "status": "triggered",
    "ruleId": "a1b2c3d4-...",
    "triggeredAt": "2026-06-18T10:00:00.000Z"
  },
  "attempt": 1
}

incident.updated

Sent when an incident is acknowledged (status changes from triggered → acknowledged).

{
  "event": "incident.updated",
  "data": {
    "incidentId": "e5f6a7b8-...",
    "status": "acknowledged",
    "acknowledgedAt": "2026-06-18T10:05:00.000Z"
  },
  "attempt": 1
}

incident.resolved

Sent when an incident is resolved.

{
  "event": "incident.resolved",
  "data": {
    "incidentId": "e5f6a7b8-...",
    "status": "resolved",
    "resolvedAt": "2026-06-18T10:45:00.000Z"
  },
  "attempt": 1
}

nudge.triggered

Sent when the nudge detection engine identifies an unusual pattern in your metrics.

{
  "event": "nudge.triggered",
  "data": {
    "nudgeId": "...",
    "message": "Error rate on api-server is 3× above baseline",
    "severity": "warning",
    "detectedAt": "2026-06-18T10:10:00.000Z"
  },
  "attempt": 1
}

anomaly.detected

Sent when the ML-based anomaly detector flags a metric.

{
  "event": "anomaly.detected",
  "data": {
    "metricName": "http_request_duration_p95",
    "serviceName": "checkout",
    "score": 0.94,
    "detectedAt": "2026-06-18T10:12:00.000Z"
  },
  "attempt": 1
}

Subscribe only to the events you need. Each endpoint can subscribe to any combination of the 7 event types.