SiteSentry is an AI agent that monitors your website 24/7. It catches broken pages, slow loading, failed forms, and checkout errors before customers screenshot them and send them to you.
Trusted by teams who can't afford surprises
Pricing value
Risk-free upgrade
When Datadog is overkill
Datadog is the heavyweight: infrastructure metrics, distributed tracing, log management, real-user monitoring, and synthetic checks — all under one login, and all priced à la carte. If you're running a platform team across 200 services and you need Grafana-grade dashboards, Datadog earns its place. If you're shipping a website and you need to know when checkout breaks, Datadog is the wrong tool at the wrong price.
SiteSentry is built for one job: telling you the moment a customer-visible page fails. Paste your URL, pick your check interval, choose Slack or email — you're monitoring in ten minutes, not a week. $49/mo covers 50 monitors at 60-second intervals with AI deduplication and visual diff included. No host-based pricing, no log-ingest GB, no APM seats, no SKU calculator that doubles when you cross a threshold. Same outcome — broken checkout caught before customers notice — without the infrastructure-platform complexity tax.
Real feedback
"Our checkout was broken for 6 hours on a Friday. SiteSentry caught it in 90 seconds. We lost maybe $400 in that window instead of the $6K it would have been if a customer had reported it. Setup took 10 minutes. It's been running itself ever since."
"I manage 14 client sites. SiteSentry alerts me to broken forms, SSL issues, and slow pages before the client emails land. I look proactive. The daily report goes out under my name — clients think I have an ops team."
"We pushed a migration at 2am. SiteSentry flagged a broken image CDN before our CEO got the first call from a user. It literally paid for a year of the service in one incident. The visual diff also caught a CSS regression that our own QA missed."
What it does
Checks your site every 60 seconds from 12 global locations. Uptime, page speed, forms, checkout flow — all covered.
SiteSentry doesn't just alert — it acts. Broken images, slow assets, failed API calls. It fixes what it can and escalates what it can't.
Not a raw JSON dump. Not a pagerduty trigger. A Slack message that says: "Checkout is broken. Here's exactly what's wrong and how to fix it."
Every morning at 8am: your site's health score, what broke in the last 24 hours, what was fixed automatically, and what needs your attention this week.
SiteSentry takes a screenshot of your key pages daily. When they change unexpectedly — even a subtle CSS shift — you get an alert with before/after comparison.
Connect SiteSentry to your existing stack. PagerDuty for alerts, Zapier for workflows, Slack for the team, Linear for the bug tracker.
This is a demo. Your SiteSentry dashboard will look exactly like this — but for your real site.
SiteSentry is the employee you can't afford to hire and the tool that makes all other monitoring tools obsolete. One flat price. No per-page fees. No surprises.
Common questions
If basic uptime checks are catching every failure on your site, keep your free tier — no need to switch. SiteSentry is built for the failures uptime checks can't see: single-region checks miss outages that only happen from your customers' geography, and uptime tools don't run visual-diff or broken-element detection at all. SiteSentry checks from 12 global locations, runs AI deduplication so a CDN blip doesn't page you at 3am, and ships visual-diff monitoring where UptimeRobot and Pingdom charge extra or don't offer it. Keep your free tier on basic uptime if it works for you — SiteSentry is for the failures uptime checks can't see.
Ten minutes. No agent to install, no code to deploy, no server-side sensor. Paste your URL, choose your check interval, pick where alerts go (Slack, email, or SMS), and you're done. Compared honestly: Datadog and Pingdom have larger surface area and a longer ramp — if you want multi-region probes, custom dashboards, and PagerDuty routing from day one, Datadog is overkill and a week-long setup. SiteSentry's onboarding is faster because the product surface is smaller, and most teams don't need the rest.
Cancel from your dashboard in two clicks. No retention call, no email back-and-forth, no cancellation fees. We don't save your monitor history after cancellation — we tell you this up front, because that's how you avoid getting locked into a tool that quietly holds your data hostage.
$49/mo is the published flat price for all features including AI deduplication, visual diff, and 50 monitors at 60-second intervals — what Pingdom, Better Stack, and UptimeRobot price as add-ons. No quote process, no calculator that changes when you cross a threshold, no per-seat or per-region stacking after signup. The number you see is the number you pay.
UptimeRobot's free tier caps checks at 5-minute intervals, runs from a single region (so your real customers' geography is invisible), and doesn't include visual diff, AI deduplication, or broken-element detection. SiteSentry's $49 gets you 60-second checks from 12 global regions, visual-diff alerts, and 24/7 incident analysis — the checks that actually catch the failures free uptime tools miss. If 5-minute single-region checks are enough for your business, keep UptimeRobot; if you've ever lost a sale to an outage your free monitor didn't see, this is what $49 buys.
Upgrade in-place from Solo to Agency ($149/mo, 25-key upgrades vs. Priime and 30-second checks) or to Enterprise ($399/mo, unlimited sites, 15-second checks, dedicated account manager) — no migration, no data loss, monitoring continues through the switch, and existing alert history is preserved. Downgrades work the same way: scale down any month without penalty. Compare to Pingdom's per-monitor tier ladder or Better Stack's paid add-on stacking, where every change is a recalculation; here it's a single plan change in your dashboard.
Every paid plan includes real-human incident response — Slack and email on Solo, plus SMS on Agency, and a dedicated account manager on Enterprise who knows your stack, not a chatbot. We treat incidents as joint work: triage alongside you, post the root cause, and tell you exactly what to change to prevent the next one. UptimeRobot and Better Stack route you to a docs site and a ticket queue; SiteSentry picks up.
Still deciding? See the full feature list →