Everything you need to monitor websites and respond fast

ErrorNotifier starts with uptime monitoring, then grows into error tracking, release context, artifacts, feedback, and replay foundations.

Uptime monitoringHTTP checks, expected status codes, keyword matches, safe timeouts, redirects, check history, and incidents.Instant alertsEmail, Slack incoming webhooks, signed outbound webhooks, cooldown foundations, and delivery logs.Performance insightsResponse time summaries, uptime strips, check tables, and incident history.Status pagesPublic status route, linked monitors, incident history, and plan-aware branding foundation.Error trackingProject keys, store/envelope ingestion, issue grouping, JavaScript SDK, releases, and source map metadata.Security controlsSSRF defense, PII redaction, nonces, capabilities, audit logs, and signed webhooks.