Lists all active alerts for the authenticated system, filtered by that system's system_key.
Each system is scoped to see only its own alerts. The proxy automatically injects a system_key filter into the query.
Access control: Requires HTTP Basic Auth with valid system credentials.
GET
/services/mimir/alertmanager/api/v2/alerts
curl \
--request GET 'https://api.your-domain.com/api/services/mimir/alertmanager/api/v2/alerts' \
--user "username:password"