HTTP(S) checks every 5 minutes
Watch any public URL. We record status, latency, and the last check time so you can see gaps instead of a mystery green dot.
Features that an uptime tool should have
Sentinel Watch is a hosted HTTP uptime monitor. Every five minutes it requests the URLs you add, records status and latency, emails the account owner when a check fails or recovers, can require a keyword in the HTML, warns before TLS certificates expire, and optionally publishes those monitors on a public status page. Pause, resume, and delete are first-class actions — not buried menus — because maintenance windows should not look like outages. This page lists what ships today, not a roadmap dressed as a product.
Keyword + SSL expiry
Fail the check if expected copy is missing from the HTML, and get an email when a certificate is close to expiry.
Public status pages
Share an operational banner, 90-day uptime bars, and incident history with customers — no extra status-page vendor.
Email on down and recovery
First failure, confirmed downtime, and recovery emails go to the address you signed in with. Pause monitors during deploys.
Pause, resume, delete
Maintenance windows should not look like outages. Pause checks, resume when you are ready, or delete a monitor and its history.
No silent failures
If history cannot load, you get an explicit message — not an empty green screen. Pause and delete are first-class, not buried.
HTTP(S) checks
Each monitor is a named URL. The checker follows the 5-minute schedule, stores the result, and updates last-checked time on the dashboard card. Interval is shown in minutes. Expected status codes default to 200.
Keyword matching and SSL
Optional keyword: if the text is missing from the response body, the check fails even on HTTP 200 — useful when a reverse proxy serves a generic OK page. SSL expiry warning days default to 7.
Email alerts
Alerts go to the login email: first failure, confirmed downtime, recovery, and SSL nearing expiry. There is no SMS, Slack, or PagerDuty integration in this product. Pause a monitor to silence checks during deploys.
Pause, resume, delete
Dashboard cards and the monitor detail page expose pause/resume/delete with a confirm dialog for destructive actions. Deleting a monitor removes its history.
No silent failures
When history cannot load, the dashboard shows a clear message instead of an empty green screen. Live checks and email alerts are designed to keep running. Pause, resume, and delete stay first-class so maintenance never looks like an outage.
Related: pricing & limits · status pages · uptime monitoring guide