connector.status_changed

A probe or a verify moved an installation's state — connected, degraded or revoked.

When this fires

The hourly health probe, or a Verify run by the creator (POST …/installation/verify, verify_connector_installation), recorded a state other than the one the installation had. A probe that finds nothing changed fires nothing.

Required ability

project-connector:view — token must carry this at mint time to subscribe an endpoint to this event.

Payload

{
  "id": "evt_01HX...",
  "type": "connector.status_changed",
  "created_at": "2026-09-12T06:00:00Z",
  "api_version": "2026-05-01",
  "project_id": "7f3d1c92-8b45-4e6a-9d21-5c8e0a4b6f13",
  "data": {
    "connector": "telegram",
    "installation_id": "3b8f0c6e-2d41-4a97-9e5f-1c7d6b2a8e40",
    "project_id": "7f3d1c92-8b45-4e6a-9d21-5c8e0a4b6f13",
    "previous_state": "connected",
    "state": "degraded",
    "reason": "connector_api_unauthorized"
  }
}

Field reference

Field	Type	Notes
`id`	string ULID	Unique event id, prefixed `evt_`. Use for idempotent processing.
`type`	string	Always `connector.status_changed` for this event.
`created_at`	ISO 8601 timestamp	Server-side emission time.
`api_version`	string	Webhook API contract version.
`project_id`	string UUID	Project this event belongs to.
`data.connector`	string	The connector key.
`data.installation_id`	string UUID	The installation row.
`data.project_id`	string UUID	Mirrors top-level `project_id`.
`data.previous_state`	string	The state before: `pending`, `connected`, `degraded`, `revoked` or `disconnected`.
`data.state`	string	The state now.
`data.reason`	string \| null	The connector's reason code when the state is not `connected`; the same code `state_reason` carries.

Caveats

reason is a stable code in the connector's vocabulary; the sentence for it is state_detail on the installation, read from the API.
A Disaster Recovery incident opens beside a degraded state that warrants a replacement; see recovery.incident_opened.

connector.connected — a fresh connection that clears a degraded state.
connector.disconnected — the creator withdrew it on purpose.
Connector events overview — back to family overview.