HTTP monitoring
Know when your URL fails in under a minute
Hit any public URL on a schedule and mark it up when the request succeeds. Catch 5xx, timeouts, and dead endpoints before your users do.
Free for now. Help us shape what comes next.
The problem
Most "free" HTTP monitors throttle you to 5-minute checks, bury useful status under noise, or push you into a paid plan the moment you need something serious. You find out a health endpoint died when a customer emails you.
How we solve it
Add a URL, pick 1-minute or 5-minute intervals, and get a clear up/down signal with response time. Launch tier is free with no credit card. Email alerts fire when something breaks.
Technical capabilities
How HTTP Checks works in CalmCanary.
Configuration & setup
Point a monitor at any https:// URL. Defaults to GET. Create it in seconds from the dashboard with no agents, YAML, or probe network to babysit.
GET https://api.example.com/health -> expect success
Alerting
When an HTTP check fails, CalmCanary emails you so you can fix it before users notice. Pair with TCP monitors for a complete stack.
Email alerts on failure - clear up/down state
Performance & reliability
Run checks every 1 minute or 5 minutes. See response time on each result so slow-but-up APIs stand out from true downtime.
Intervals: 1m - 5m - response time recorded
What gets checked
We request your URL and treat a successful response as up. Timeouts and failed requests mark the monitor down.
Public URLs - HTTPS endpoints - health routes
How it works
Three steps. No agents. No ceremony.
Create an HTTP monitor
Choose HTTP, paste your URL (homepage, API, or /health), and pick a 1-minute or 5-minute interval.
We hit it on schedule
CalmCanary requests the URL and records whether it succeeded plus how long it took.
Get emailed when it fails
If the check goes down, you get an email alert. Fix it, watch it recover, stay calm.
Who this is built for
Agencies
Watch client marketing sites and staging APIs without juggling five vendor logins or paying per-check taxes.
Indie / AI builders
Keep health endpoints on the apps you ship, especially flaky LLM gateways and webhook receivers without ops overhead.
Small product teams
One place for public HTTP surfaces: marketing site, API, status redirect. Free while we gather feedback.
Tired of paying monthly for basic URL checks on UptimeRobot or Pingdom?
See CalmCanary vs UptimeRobotFAQs
What HTTP methods are supported?
Checks use GET today from the create-monitor flow, the usual default for health and homepage URLs. Backend support exists for common methods as we expand the UI.
How often can HTTP checks run?
Choose 1-minute or 5-minute intervals. 1-minute checks catch downtime fast without the noise of sub-minute spam.
Do you follow redirects?
Yes. Redirects are followed so a temporary Location hop does not falsely mark a healthy site as down.
Is HTTP monitoring free?
Yes on the launch tier. No credit card. Join early for a path to limited lifetime deal seats.
More features
Start using HTTP Checks free
Launch tier monitoring with a direct line to the team. Early LTD seats for early users.