For a small B2B SaaS comparing Rollbar, Bugsnag, Sentry, or a lean alternative, a useful server error grouping API must let the on-call search one property-management attempt, inspect event detail, and resolve workflow state without losing the underlying evidence. The least complex design is one immutable event stream keyed by an attempt ID, plus error groups that point back to those events across US and EU workloads. The bad page says only agent_error_rate > 5% . An engineer opens it at ...