Landing page monitoring for paid traffic
A deploy dropped one prefix from the route table. For 3 hours and 33 minutes every uptime monitor pointed at that page reported it healthy, because the server answered 200 OK — and served a page that says it does not exist.
On this page red means something is wrong, amber means something is drifting, green means it is working. Nothing is coloured for decoration — not even the buttons. The AI in the wordmark is the single exception.
→ fetching as a phone
→ 200 OK · 14,208 bytes
→ body matched “page could not be found”
→ conversions 0 · spend continuing
Status returned
200 OK
Body matched
page could not be found
Unfixed for
213 min
Spent into it
$12,480
In one sentence
VampireAI checks the pages your ads point at, every five minutes, as a phone — and pages a human the moment one stops being able to convert.
That is called landing page monitoring, and it is a different question from the one uptime tools ask. They check whether the server answered. This checks whether the page can still sell.
1 What it watches
You paste the address of the landing page. Nothing else — no ad account access, no permissions screen. We fetch it the way your customer would: on a phone, following whatever it does next.
2 What it catches
A page that says it could not be found, a click that lands somewhere else, a wall that only appears on mobile, conversions stopping while spend carries on. Your uptime monitor reports all four as healthy.
3 What it does about it
After two failed checks in a row it raises an incident and pages the person actually on shift — with the action already written, priced, and reversible. Approve or reject from your phone.
What the click actually got
Paid click
$58.59 / min
sent to
/lp/screening-trial
the URL you registered
until 00:00 this served the offer page
AFTER DEPLOY 8f2c1 · NO ROUTE MATCHES ↓
The router's catch-all
“this page could not be found”
which answers ↓
200 OK
an uptime monitor stops here — it reads the status code and nothing else
VampireAI instead reads ↓
the words on the page · the path it landed on · fetched as a phone
→ and the conversions that stopped while spend did not
$0.00
That is what has left the account since you opened this page, at INC-2291’s real rate: 0:00 here, at $58.59a minute. That page went 213 minutes before anyone acted, which came to $12,480. Arithmetic, not an estimate.
What it costs to stop it, by how long that takes
All three answer 200 OK. That is the whole problem: the check every tool runs is the check that cannot see them.
Soft 404
A CMS catch-all, a router with no match, a deleted product page. We read the body and record the exact phrase we matched, so the claim is checkable.
Silent redirect
A retired campaign URL that now bounces to a sign-in wall. We compare where the visitor arrived against the URL you registered.
Mobile only
A consent wall or geo-redirect that only fires for a phone is invisible to a desktop check. We fetch as a phone, because that is who is arriving.
The part nobody builds
Detection took 6 minutes. The other 207 were a person asleep.
Deploy 8f2c1 shipped at Denver midnight, and the only person who could roll it back was asleep. A faster dashboard saves none of that. So the alert arrives with the decision already written, reversible, and goes to whoever is actually awake.
00:06
Detected
Feed watch: conversions stopped while spend continued, confirmed on a second check. One failure is a blip; two in a row is an outage.
00:06
Paged — primary on call, UTC−3
No answer. The rota moves on rather than waiting for the account owner.
00:19
Acknowledged — next shift, UTC+5:30
Taken. The first contact stops being paged.
00:21
Applied — 3 campaigns paused
Spend stopped. The 207-minute wait becomes 15.
00:06 is INC-2291's. The rota, and everything after it, is what this alert produces instead of a 3h27m wait.
What lands on the phone at 00:06
Most alerting says a number crossed a line. This says what it costs, what it proposes, and lets you say no — the only version a person answers at 3am.
Try it — the card records what you chose, the way the real one does.
Conversions from these three campaigns stopped while spend continued, and the destination probe confirms the page body says it could not be found while the server answers 200. These campaigns are spending $58.59 a minute into it and have converted nobody since it started.
Confirmed on
2 checks
Approving stops
$58.59/min
Either way it is recorded, with who and when.
What it costs you to try
A URL. Not an OAuth review.
Checking a destination needs the address of the page and nothing else. No account access, no permissions screen, no procurement.
Connecting an ad account is optional, and it buys you one thing: the alert stops saying this page is broken and starts saying this page is broken and it is costing $58.59 a minute — the version that gets somebody out of bed.
To start watching one page
| Paste the URL | ~20 sec |
| Pick a check interval | ~10 sec |
| Say where it should land | ~30 sec |
| Connect an ad account | optional |
| Enter a card | none exists yet |
There is no price on this site because the self-serve connect flow is not built. Charging before it exists would be charging for a promise.
Before you spend a minute on this
If you spend a few thousand a month, this is not worth your money yet.
A dead landing page for an afternoon costs a small account less than a subscription would. The arithmetic starts working somewhere north of $50k a month, or across a book of client accounts where a dead page is a weekly event rather than a yearly one. Below that, this is not the thing to buy yet — and we would rather say so here than take the money.
Common questions
Landing page monitoring is the continuous checking of the page a paid click actually lands on, to confirm it can still convert. It checks where the visitor ended up, what the page says, and what a phone sees — not just whether a server answered.
Uptime monitoring asks whether the server answered. Landing page monitoring asks whether the page can still sell. A dead landing page usually returns 200 OK, so an uptime monitor reports it healthy while the ads keep running.
A soft 404 is a page that says it does not exist while the server answers 200 OK. A CMS catch-all, a route with no match, or a deleted product page all produce one. Because the status code looks fine, most monitoring never sees it.
Match the interval to the spend rate, not to how often the page changes. The question is how much money passes through the page between two checks. At $58.59 a minute, a five-minute interval caps one failure at roughly $293; not checking at all is what cost $12,480.
No. Checking a destination needs the address of the page and nothing else — no OAuth, no account access, no review process. Connecting an ad account is optional and only adds the spend rate to the alert.
Minutes broken multiplied by spend rate. In INC-2291 the rate was $58.59 a minute across 3 campaigns and the page was unfixed for 213 minutes, which came to $12,480. It is arithmetic, not an estimate.
A working copy of the product loaded with INC-2291 — the check that caught it, the war room the next shift read, and the decision that would have stopped the spend at 00:21. No account, no connection, no card.
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