Retrieves an alert source

curl --request GET \
  --url https://api.rootly.com/v1/alert_sources/{id} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "id": "e0f60d58-55b5-4707-a319-be2742b1a5ab",
    "type": "alert_sources",
    "attributes": {
      "name": "Alert Source 20",
      "source_type": "datadog",
      "status": "setup_incomplete",
      "secret": "18e254ac2cce8aaab5bdbbacecfdfa670ad280a4f36453bdb5d3387d30be43bb",
      "alert_urgency_id": "bfbc0c34-e60d-4774-be26-da6caca51c8c",
      "created_at": "2025-10-08T19:30:38.646-07:00",
      "updated_at": "2025-10-08T19:30:38.646-07:00",
      "webhook_endpoint": "http://localhost:3001/webhooks/incoming/datadog_webhooks/notify/<TYPE>/<ID>",
      "owner_group_ids": [],
      "deduplicate_alerts_by_key": false,
      "deduplication_key_kind": "payload",
      "deduplication_key_path": null,
      "deduplication_key_regexp": null,
      "alert_source_urgency_rules_attributes": [],
      "alert_source_fields_attributes": [],
      "sourceable_attributes": null,
      "alert_template_attributes": null,
      "resolution_rule_attributes": null
    },
    "relationships": {
      "alert_source_urgency_rules": {
        "data": []
      },
      "alert_source_fields": {
        "data": []
      }
    }
  }
}