Complete Visibility Into Your Stack
Monitor HTTP endpoints, SSL certificates, DNS records, content changes, and upstream dependencies—all validated across 6+ global regions before you're alerted.
Not sure which monitors you need? Smart Setup analyzes your site and recommends the right configuration automatically.
Learn about Smart SetupEvery Layer of Your Stack, Covered
From uptime checks to SSL certificates to content integrity—catch problems before they cost you customers.
HTTP/HTTPS Monitoring
Uptime & performance tracking
Check your websites and APIs as often as every 30 seconds. Track response times, status codes, and performance percentiles across all your endpoints.
SSL Certificate Monitoring
Never let a certificate expire again
Get alerts at 30, 14, and 7 days before expiration. Track certificate changes, chain validation issues, and multi-certificate configurations.
DNS Monitoring
Catch DNS issues before outages
Track DNS record changes, IP address modifications, and propagation issues. Monitor A, MX, TXT, CNAME, CAA, and DNSSEC records.
Content Monitoring
Detect changes and defacements
Detect defacements, accidental content deletions, or broken deployments. Know instantly when critical text disappears from your pages.
Dependency Monitoring
Track third-party service health
Monitor the third-party services your application depends on. Dependencies are child monitors under your main endpoint—when a provider's status page reports issues, you'll know whether it affects you before customers complain.
One Monitor. Complete Picture.
Other tools make you create separate monitors for HTTP, SSL, DNS, content, and dependencies. We give you one parent monitor with built-in child checks—so you see your entire stack's health at a glance.
Single Dashboard
See HTTP, SSL, DNS, content, and dependencies in one view
Smart Cascading
Child failures automatically reflect on parent status
Flexible Control
Content checks can optionally roll up or notify only
30-Second Checks During Outages
When your site goes down, we automatically switch to 30-second check intervals—regardless of your plan's normal interval. The moment you're back up, you'll know.
Normal Operation
Checks run at your configured interval (30s to 1h)
During Incident
Automatically accelerates to every 30 seconds
Instant Email Notifications
Get alerted the moment something needs your attention. Email notifications for all incident types, SSL warnings, and recoveries.
We Double-Check Before Waking You Up
A network hiccup in one location won't trigger a 3am alert. We verify from multiple continents before notifying you.
Chicago
Check Failed
Step 1: Initial check
Verification Checks
Step 2: Cross-region verification
All Clear
Awaiting verification...
You Sleep Soundly
Network hiccup filtered out
Step 3: Result
Chicago
Check Failed
Step 1: Initial check
Verification Checks
Step 2: Cross-region verification
All Clear
Awaiting verification...
Alert Sent!
Real outage confirmed
Step 3: Result
6+ Global Regions
US, Europe, Asia-Pacific
Configurable Threshold
Require 2, 3, or more to confirm
Parallel Validation
Adds seconds, not minutes
Check As Often As You Need
From 30-second checks for mission-critical services to hourly checks for less sensitive endpoints.
30-second checks on Business, Growth & Agency plans. 1-minute on Starter. 5-minute on Free.
Get Alerted Your Way
Send notifications to Slack, Discord, Teams, PagerDuty, or any service that accepts webhooks. Cryptographically signed payloads ensure authenticity.
- • Incident Started
- • Incident Recovered
- • SSL Expiring
- • SSL Changed
- • DNS Failed
- • DNS Recovered
- • Created / Deleted
- • Paused / Resumed
{ "event": "incident.started", "timestamp": "2026-02-05T14:32:00Z", "data": { "incident": { "id": "inc_7f3b2a", "incident_type": "uptime", "started_at": "2026-02-05T14:32:00Z", "error_message": "Connection refused", "severity": "critical" }, "monitor": { "id": "mon_4e8c1d", "name": "API Health", "url": "https://api.example.com" } } }
Signature sent via X-Webhook-Signature header (HMAC-SHA256)
Built with security and privacy in mind
GDPR Ready
Privacy by design
256-bit SSL
Encrypted connections
Regional Storage
US & EU data centers
Your Data
Export anytime
Start Monitoring in Under 2 Minutes
No credit card required. Free forever plan available. Add your first monitor and see it working in seconds.
- Free forever plan
- 30-second checks available
- Cross-region validated