11.3Events

Event	When it is sent
`alert.fire`	A monitor opened an incident: it is `down` or `degraded`. When this happens follows your alert policy (chapter 9).
`alert.fire` with `reminder_number`	A reminder while the incident stays open, if reminders are on in your alert policy (9.7).
`alert.resolved`	The monitor recovered and the incident closed.

Reminders#

A reminder is an alert.fire with the same alert_id and fired_at as the first one. It also has reminder_number and downtime_seconds so far.

Muting and maintenance#

While a monitor is muted or in a maintenance window, obsrvly sends no alert.fire.
If the monitor is still down when the mute or window ends, the alert.fire is sent at the next failed check. If you select Unmute, it is sent at once.
alert.resolved is always sent. If no alert.fire went out, it has fire_suppressed: true.

Samples#

alert.fire

json

{
  "event": "alert.fire",
  "alert_id": "01a06c78-0fba-7507-a501-b3fb2138a6ab",
  "monitor_id": "01a05b21-4c9e-7f10-8d22-9e7b1a4c5d63",
  "monitor_name": "postgres-primary:5432",
  "monitor_url": "db.acme.io:5432",
  "status": "down",
  "consecutive_failures": 2,
  "location": "us-west",
  "last_error": "dial tcp 203.0.113.12:5432: i/o timeout",
  "fired_at": "2026-09-08T14:27:23Z"
}

alert.fire as a reminder

json

{
  "event": "alert.fire",
  "alert_id": "01a06c78-0fba-7507-a501-b3fb2138a6ab",
  "monitor_id": "01a05b21-4c9e-7f10-8d22-9e7b1a4c5d63",
  "monitor_name": "postgres-primary:5432",
  "monitor_url": "db.acme.io:5432",
  "status": "down",
  "consecutive_failures": 2,
  "location": "us-west",
  "last_error": "dial tcp 203.0.113.12:5432: i/o timeout",
  "fired_at": "2026-09-08T14:27:23Z",
  "reminder_number": 1,
  "downtime_seconds": 1800
}

alert.resolved

json

{
  "event": "alert.resolved",
  "alert_id": "01a06c78-0fba-7507-a501-b3fb2138a6ab",
  "monitor_id": "01a05b21-4c9e-7f10-8d22-9e7b1a4c5d63",
  "monitor_name": "postgres-primary:5432",
  "monitor_url": "db.acme.io:5432",
  "resolved_at": "2026-09-08T14:43:27Z",
  "downtime_seconds": 964
}

The values in these samples are examples. The dashboard has the same reference under alerting → webhook docs.