Free
$0/forever
- 5 monitored sites
- 15-minute fastest ping frequency
- 1 seat
- 30-day history
- Email alerts included
Privacy-first uptime monitoring
Know your website is down before your customers do
ErrorNotifier watches public websites from outside your stack, confirms incidents before paging your team, and keeps response history clear enough for support, operations, and owners.
No credit card required
Domain ownership checks
Email alerts included
Human/agent setup wizardPublic instructions for Codex, developers, and site owners.
errornotifier.comOperational
99.982%uptime142msavg response
ResolvedSlack and email notified after recovery confirmation
Free monitors5
Free ping frequency15 min
Paid fastest ping1 min
Included history30+ days
External uptime checksAvailable Now
HTTP methods, expected status, keyword rules, safe redirects, and response-time history.Incident workflowAvailable Now
Confirmed failures open incidents, recoveries resolve them, and every action lands in history.Alert routingAvailable Now
Email, Slack incoming webhooks, and signed generic webhooks with delivery logs.Error trackingBeta Foundation
Browser SDK, project keys, deterministic grouping, releases, and protected artifact metadata.Automated test runsAvailable Now
CI can post unit-test results, failure details, branch, commit, duration, and report links.Simple setup, real operations
Add a URL, choose the expected HTTP status, set keyword checks when needed, and connect your first alert channel. ErrorNotifier records every check and opens incidents only after confirmed failures.
Incident lifecycle your team can follow
Failures, acknowledgements, recoveries, alert deliveries, and manual actions land in an append-only timeline with audit events for the organization.
Status pages and observability foundations
Publish a status page, ingest JavaScript errors, upload release metadata, store source map artifacts, and keep a privacy-first path toward replay and feedback.
Automated tests beside incidents
Post CI and unit-test runs into ErrorNotifier so a failed deploy, fresh error group, and broken test suite can be reviewed from the same workspace.
Resources
Turn alerts into a response system
Use the templates and guides to decide who owns an incident, how often to update customers, and what uptime target your current process can support.
Pricing preview
Useful free monitoring with clear upgrade paths for teams.
Starter
$9/month
- 20 monitored sites
- 5-minute fastest ping frequency
- 1 seat
- 90-day history
- Email, Slack, and webhook alerts
Growth
$24/month
- 50 monitored sites
- 2-minute fastest ping frequency
- 3 seats
- 180-day history
- Email, Slack, and webhook alerts
- Maintenance windows and alert rules
Team
$59/month
- 150 monitored sites
- 1-minute fastest ping frequency
- 10 seats
- 365-day history
- Email, Slack, and webhook alerts
- Maintenance windows and alert rules
- Team roles and audit log
- Optional SMS add-on foundation
Enterprise
Custom
- Custom sites and seats
- 1-minute fastest ping frequency
- SSO/SAML and invoice billing
- IP allowlisting support
- Private probes and contract SLAs
Developer ready
REST examples, worker setup, webhook signing, error ingestion, automated test runs, source map concepts, PII redaction, and troubleshooting are documented from day one.
Read docsOperations ready
Incident templates, uptime budgets, and worker setup notes help teams turn monitoring into a repeatable response process.
Browse resourcesTrust ready
Security, privacy, and enterprise-readiness notes are separated into available, beta, and planned controls.
Visit trust centerPublic demo
Review the real product screens with read-only mock data
Open the demo workspace to inspect monitors, incidents, domains, alert channels, status pages, projects, issues, automated test runs, releases, artifacts, audit history, and umbrella reports without creating an account.