Compare each host over equal windows before and after the deploy. See which errors appeared, remained or stopped in those windows, then open the supporting events.


CI posts POST /v1/marks; the mark draws on the hunt histogram. Compare reads before and after for each plotted level, service or host, on equal windows around the mark. Fingerprints sorts e1: errors into first seen, still here and stopped on the same clock. Filter writes e1:<hex> into the bar; a row opens the event. Attrs you can query, not an issue tracker.
Marks from CI →Hosted early access is planned for Q4 2026. The same product as the free self-hosted edition, operated by us.