# Amazon CloudWatch Observability Admin events
<a name="events-ref-observabilityadmin"></a>

CloudWatch Observability Admin sends service events to EventBridge via Amazon CloudTrail.

## CloudWatch Observability Admin events delivered via Amazon CloudTrail
<a name="event-ref-observabilityadmin-events-via-CT"></a>

Amazon CloudTrail sends events originating from CloudWatch Observability Admin to EventBridge. Amazon services deliver events to CloudTrail on a [best effort](event-delivery-level.md) basis. For more information, see [Amazon service events delivered via Amazon CloudTrail](https://docs.amazonaws.cn/eventbridge/latest/userguide/eb-service-event-cloudtrail.html) in the *Amazon EventBridge User Guide*.

To match events from this service delivered by Amazon CloudTrail, create an event pattern that matches against the following event attributes:
+ `source`: aws.observabilityadmin
+ `eventSource`: observabilityadmin.amazonaws.com

```
{
  "source": ["aws.observabilityadmin"],
  "detail-type": ["Amazon API Call via CloudTrail"],
  "detail": {
    "eventSource": ["observabilityadmin.amazonaws.com"]
  }
}
```

To match against a specific API calls from this service, include an `eventName` attribute specifying an array of API calls to match:

```
{
  "source": ["aws.observabilityadmin"],
  "detail-type": ["Amazon API Call via CloudTrail"],
  "detail": {
    "eventSource": ["observabilityadmin.amazonaws.com"],
    "eventName": ["api-action-name"]
  }
}
```