Getting started with PageLantern
Create your first monitor and get alerted when your website or API goes down — in about two minutes.
Documentation
PageLantern documentation.
Guides for every monitor type, every alert channel, the REST API, and the operational states you will see in the product — plus a plain-language glossary.
Start here
Monitor types
Website monitoring guide
HTTP uptime checks: status codes, content assertions, latency, and how PageLantern identifies itself.
API monitoring guide
Single and multi-step API checks with JSONPath assertions, variable extraction, and HAR export.
Heartbeat monitoring guide
Dead-man’s-switch monitoring for cron jobs and background workers: ping a URL, get alerted when the ping stops.
SSL certificate and domain expiry monitoring
Catch certificate expiry, hostname mismatches, broken chains, and domain renewal deadlines before a browser warning does it for you.
DNS and TCP monitoring
Verify that records resolve to the values you expect and that public ports are reachable — so routing failures are not mistaken for application failures.
Browser checks
Run a real browser against the flows that matter — login, checkout, search — and keep screenshots, traces and console output as evidence when they break.
Alerting and incidents
Alerts and notification channels
Set up every alert channel PageLantern supports, route alerts per monitor, and tune thresholds so the alerts you get are the ones you act on.
Webhook payloads and signature verification
The JSON PageLantern posts to your endpoint, the signature header that proves it came from us, and how to verify it.
Incidents, responders and postmortems
How incidents open and close automatically, what the lifecycle states mean, and how to run the workflow through to a postmortem.
Sharing status
Status pages guide
Hosted public status pages: publishing incidents, maintenance windows, and subscriber updates.
Customising a status page
Components, branding, maintenance windows and subscribers — everything beyond publishing the page itself.
Platform
Teams, roles and invitations
What each role can do, how invitations work, and how to give someone access without giving them everything.
API keys
Create, scope, rotate and revoke the keys that authenticate programmatic access.
Billing, plan changes and cancellation
How plan changes are prorated, what a credit balance is, how to cancel, and what happens to your data when you downgrade.
Reference
API reference
Authentication, conventions, rate limits, and the endpoints for monitors, incidents, status pages and results.
Probe-blocked, confirmation and other states
What "Not measured" means, how second-region confirmation works, and how to allowlist our probe.
Monitoring glossary
Plain definitions of uptime monitoring, synthetic monitoring, status pages, heartbeats, SSL expiry, SLA/SLO, error budgets, and related terms.