SaaS Startups
Customers rarely remember when your service works, but they never forget when it doesn't. Monitor uptime, APIs, domains, SSL certificates, and customer-facing services to catch problems before they become support tickets. Stay focused on growing your product while knowing critical systems are being watched continuously.
Tools for this use case
Send any HTTP method with custom headers — test API endpoints and inspect response payloads.
Verify SSL is valid and correctly configured on every customer-facing domain.
Verify infrastructure reachability and measure latency to hosted services.
Audit transactional email infrastructure — blacklist status, SPF, DMARC, DKIM, and MX.
Confirm DNS changes reach all 34 global resolvers after deployments or infrastructure moves.
Probe a list of hostnames for HTTP and HTTPS availability in one pass.
Two capabilities worth knowing about
The tools above check that something responded. These two check that it still works end to end, and that it feels fast to the people actually using it.
Automate browser-level user journeys — logins, checkouts, form submissions — and verify they complete successfully on every run. Move beyond simple uptime checks to true end-to-end validation.
Learn more →Measure Largest Contentful Paint, Interaction to Next Paint, and Cumulative Layout Shift on your visitors' own phones, laptops, and networks — not from a test machine. One script tag, no cookies, and no visitor identifier of any kind.
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