Know the moment your site stops responding
The agent watches your servers from the inside - monitors watch them from the outside, the way your users see them. Point a monitor at a URL, port, or hostname and know the moment it stops responding, slows down, or is about to expire.
https://shop.example.com200 · 182msapi.example.comtimeout · alertingapi.example.com:443 SSL41 days leftdb.internal:5432 TCPopen · 3msexample.com domainexpires 2027-03-14How it works
Monitors check your endpoints on a schedule and alert through your escalation chains the moment something breaks.
Monitor types
Every monitor type shares the same setup: pick a target, set the check interval, choose who gets alerted. No separate tools for uptime, certificates, and domains.
Request any URL and verify the status code you expect comes back. Custom methods, headers, and timeouts - and every check records the response time.
Confirm anything that speaks TCP is accepting connections - databases, mail servers, message brokers, or your own custom services.
Resolve a record of any type and check the answer contains the value you expect - so a hijacked or misconfigured zone surfaces as an alert, not a mystery.
Track days-to-expiry and the issuer for every certificate. Set your own warning threshold and get alerted long before the browser warnings start.
Watch registration expiry dates along with registrar and nameserver details, so a forgotten renewal never takes your site - and your email - offline.
Certificates and domains get their own deep dive on the domain & SSL expiry monitoring page.
Response time
Every HTTP check records how long the response took, so you get a response-time history for each monitor - and you can alert on it. Set a threshold in milliseconds and find out when your site gets slow, not just when it goes dark. Most outages announce themselves as a slowdown first.
Where checks run from
Checks run from AlertKick's monitoring locations around the world, so you see what your users see - not just what looks fine from one vantage point.
Not everything worth monitoring is on the public internet. Run an AlertKick poller inside your own network and point monitors at internal dashboards, admin panels, and private APIs - results flow into the same dashboard and alerting as everything else.
Alerting
Monitor failures go through the same pipeline as every other AlertKick alert. A monitor that fails at 3 AM wakes up one person - the right one.
What you get
Install one agent. Get security monitoring, infrastructure alerts, and on-call management - all included with every host.