Uptime Monitoring

Fast, reliable uptime monitoring built for developers.

Monitor URLs, APIs, TCP ports, and DNS from 22+ global locations with up to 10 second check intervals. Checkly Uptime is the the first layer of detection for issues impacting your end users.

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Checkly Uptime Monitoring Dashboard showing real-time status of multiple endpoints with response times and availability metrics

World-class engineering and SRE teams depend on Checkly to deliver reliable digital experiences

The first layer of defense for your entire stack.

From simple URL uptime checks to complex heartbeat monitoring, Checkly has you covered with multi-protocol support for every layer of your tech stack.

URL Monitors

Monitor status codes and response times from websites, documentation, product pages, and other static assets.

URL Monitor configuration showing HTTP status checks and response time monitoring

TCP Monitors

Monitor database connections, email servers, and other custom TCP services to ensure connectivity.

DNS Monitors

Monitor DNS record resolution for your domains. Detect DNS propagation issues before they affect users.

DNS Monitor displaying domain resolution checks and DNS record validation

Heartbeat Monitors

Monitor scheduled jobs, cron tasks, and batch processes. Get alerted when critical jobs fail to complete.

Ensure Availability & Performance

Industry-leading monitoring frequency. Detect issues faster than any competitor with checks as frequent as every second.

Monitor from Where Your Users Are

Run tests and monitors in 22+ global locations or inside your own infrastructure. Detect regional outages before they become global incidents.

Reduce False Positives For Maximum Confidence

Smart retry logic and multi-location verification ensures you only get alerted when there's a real problem.

uptime.check.ts

import { UrlMonitor, UrlAssertionBuilder } from 'checkly/constructs'

new UrlMonitor('homepage-check', {
  name: 'Homepage Monitor',
  activated: true,
  frequency: 60,
  doubleCheck: true,
  locations: ['us-east-1', 'eu-central-1'],
  request: {
    url: 'https://www.example.com',
    assertions: [
      UrlAssertionBuilder.statusCode().equals(200),
      UrlAssertionBuilder.responseTime().lessThan(500),
    ]
  }
})

alert-config.json

{
  "retryStrategy": {
    "type": "FIXED",
    "baseBackoffSeconds": 60,
    "sameRegion": true,
    "maxRetries": 5,
    "maxDurationSeconds": 300,
    "onlyOn": ["NETWORK_ERROR"]
  },
  "alertSettings": {
    "escalationType": "RUN_BASED",
    "runBasedEscalation": {
      "failedRunThreshold": 1
    }
  }
}

Monitor from where your users are

With 22+ data centers worldwide, detect regional issues before they become global outages. Get location-specific insights and understand performance from every corner of the globe.

Everything you need for a reliable digital experience

SSL Certificates Monitoring

Get alerts before certificates expire. Never let an expired cert take down your site.

Status Validation

Verify HTTP status codes (200, 404, 500) and ensure your endpoints return the expected responses.

Performance Validation

Set response time thresholds and track P50, P95, P99 percentiles for performance monitoring.

Monitoring Inside Private Networks

Deploy private agents to monitor internal services, staging environments, and VPN-protected resources.

Status Pages

Communicate service status to your users with public or private status pages powered by your monitors.

Multi-Protocol Support

Monitor HTTP, HTTPS, TCP, and DNS endpoints with a single platform.

CLI/Terraform Configuration

Manage your monitors as code with our CLI, Terraform provider, or Pulumi integration.

Incident Management

Integrate with PagerDuty, OpsGenie, FireHydrant, and Rootly for seamless incident response.

Integrates with your development and agentic workflow

Connect Checkly to your existing tools. Get alerts where your team already works and manage monitoring through your existing workflows.

Slack

Real-time alerts in your team channels with rich context and actionable details.

PagerDuty

Trigger incidents and manage on-call rotations seamlessly.

OpsGenie

Route alerts to the right team automatically based on your escalation policies.

Datadog

Forward metrics to your observability platform for unified dashboards.

Grafana

Visualize monitoring data in Grafana dashboards for comprehensive observability.

Discord

Get instant alerts in your Discord servers for real-time team notifications.