Get alerted when your
site goes down.
Monitor an HTTP or HTTPS endpoint from one region. Set the expected status, response-time budget, failure threshold, and alert channels for your plan.
How it works
Add your URL
Enter any URL, API endpoint, or IP address you want to monitor. Configure check interval and expected status codes.
We run the scheduled probe
A single-region HTTP probe checks the expected status code and response-time budget at the cadence allowed by your plan.
Get alerted after the threshold
After the configured failure threshold, receive Telegram or email alerts; Pro and Agency can also use Slack and webhooks.
Everything you need
Monitoring starts at $9/month
Starter includes 15 monitors with 5-minute uptime checks. Pro and Agency support 1-minute uptime checks.
See PricingLearn More
Uptime monitoring is the practice of repeatedly checking whether a website or API is accessible and responding correctly. A service sends requests at a configured interval and marks failures when the response does not meet its status-code or response-time contract. Alert timing includes the interval failure threshold scheduler tick and notification-provider latency. CheckFast currently performs a single-region HTTP or HTTPS probe. It can verify the response status and response-time budget; keyword SSL-expiry DNS and other concerns are configured as separate monitor types. This catches application failures that a basic ICMP ping would miss but it is not a multi-region quorum and cannot prove that every geography can reach the endpoint. Use a dedicated multi-region provider as well when regional reachability is a requirement. CheckFast's current single-region result should be treated as one observation not a global availability guarantee.
Downtime can interrupt sales integrations support workflows and search crawling. The actual impact depends on traffic business model outage duration and whether users have an alternative path; CheckFast does not calculate revenue loss or promise a particular SEO outcome. Monitoring reduces detection time but it is only one part of reliability. Define an availability target instrument server-side health and business metrics keep a tested recovery path and use alert thresholds that balance fast detection against false positives. A one-minute external probe does not replace application telemetry or an incident-response process.
A status page is a public view of service health. Full status-page products may add manually managed incidents maintenance windows subscribers custom domains and notification workflows. CheckFast's current Pro/Agency /status/ page is deliberately simpler: it shows current monitor state seven-day uptime and the latest non-OK timestamp derived from monitor runs. It does not provide manual incident authoring subscriber notifications custom domains white-label branding or SLA reporting. Use a dedicated incident-communication product when those capabilities are required.
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Scheduled recurring checks with Telegram, Slack, email, and webhook alerts.