Hello @Radoslaw S. , MC is supposed to send us notifications for below issues with our infrastructure apart from updates & licenses :
IN addition to email alerts , we want to fetch these via REST API so that we can send these events to our event management console & SNOW
MC will not send you anything. Managed cluster sends this information to Dynatrace Mission Control only. I think server also sends this information via email for cluster administrators or to predefined addresses (in CMC - Settings -> Email -> Email notifications). So preferred way is probably to fetch those emails and create events in your event management tool.