@Nick Hughes​ I was looking at our ideas portal and could see an API feature was requested for the Alerts (DB-I-4289). To create an API for the alerts and pull data, we might need to keep the alert history persistent. So this feature should suffice your requirement.

You can refer to the below post:

https://community.databricks.com/s/question/0D53f00001SAWH5CAP/is-there-an-alerting-api-please