Ad accounts don’t fail loudly. They bleed quietly.
Sentinel checks your Meta and Google campaigns three times a day, works out what actually changed, and tells you before it costs you the month. It reads your account. It never touches it.
Plans from $69/mo · Cancel anytime during the trial
Four things Sentinel does automatically
No dashboards to check, no reports to build yourself. It watches, explains, and tells you what to do next.
24/7 Alerts
Real-time emails if ad spend spikes, leads or sales drop, or cost per lead climbs. Fix issues before they waste budget.
Weekly Expert Report
Performance summary: What happened, what’s off, and what to do next, clearly prioritized.
Monthly Deep-Dive
Trends, channel breakdowns, and competitor comparisons; know what to scale, what to cut, and where to move budget.
Next Steps & Testing Plan
A ranked 30-day action plan with split tests (A/B), creative updates, and targeting tweaks, each with clear goals and deadlines.
Nothing alerts you when your budget starts leaking.
Platforms notify you about billing and policy. They don’t notify you when your best campaign quietly stops working. These are the five failures that cost the most and announce themselves the least.
Conversion tracking breaks
The tag stops firing after a site update. Spend continues at full pace. Leads stop being counted, so every optimisation signal the platform receives is now wrong.
An ad gets disapproved
Your top performer stops serving. Delivery shifts to weaker ads in the same campaign, so total spend looks normal while lead volume falls.
The landing page form stops submitting
Clicks keep arriving and keep costing money. Nothing reaches your inbox. This is usually found days later, by accident.
Creative fatigue sets in
Frequency climbs, click-through rate drifts down, cost per lead rises a few percent a week. No single day looks alarming. The month does.
Budget quietly reallocates
Automated bidding shifts spend toward a campaign with cheaper, worse leads. Your cost per lead improves on paper while your booked jobs fall.
Three checks a day, each asking a different question.
Sentinel builds a baseline from your last 90 days the moment you connect, so it knows what normal looks like for your account from day one. Not an industry benchmark. Yours.
Overnight health
Did anything break while nobody was watching? Delivery status, disapprovals, billing, and any overnight collapse in conversions.
Intraday anomaly
Is today going wrong right now? Spend pace against expected, and today’s cost per lead compared to the same hour on a normal day.
End-of-day risk
What should be handled before tomorrow? Full-day rollup, creative fatigue signals, and budget pacing to month end.
Every signal is diagnosed, not just reported.
“Cost per lead is up 47%” is a number you already had access to. Sentinel tells you where it’s concentrated, what the likely mechanism is, and what to do about it.
Most months, you’ll hear from Sentinel fewer than four times.
A monitoring tool that pings you daily becomes a newsletter you stop reading in three weeks. Sentinel only speaks at Critical severity. Everything else is logged and rolled into your weekly summary. Silence means the account is fine, and you can trust it, because the weekly summary confirms every scheduled check actually ran.
Read-only. Always.
You grant Sentinel permission to read your ad account through Meta’s and Google’s official partner access. Not a password. Not a login you share. Standard platform access you can revoke in one click, from inside your own account, without contacting us.
Sentinel has no ability to change a budget, pause a campaign, edit targeting, or touch your creative. That isn’t a policy we promise to follow, it’s what the connection is technically limited to.
Three levels of oversight.
Detection runs identically on every plan. What changes is how you’re reached, and how much human judgment sits on top.
- Three automated checks daily
- Critical alerts by email
- Weekly performance snapshot
- Monthly summary report
- No human review
- Standard thresholds
- Everything in Watch
- Alerts by email, WhatsApp, Telegram
- Every critical alert reviewed by a human before it reaches you
- Weekly commentary on what changed
- Monthly written Account Notes
- Thresholds tuned to your business
- Everything in Pro
- Urgent alerts by SMS
- Recorded monthly video audit
- Monthly competitor snapshot
- Priority escalation
Free trial available on Watch. Card required, cancel any time in the first 14 days and you’re not charged.
Who this is for.
Sentinel is a good fit if
- You spend $2,000/mo or more on Meta or Google ads
- Someone is running your campaigns, in-house or an agency, and you want independent oversight
- You’ve been burned before by a problem you found weeks late
- You can act on a finding, or have someone who can
Look elsewhere if
- You spend under $1,000/mo — the waste Sentinel catches won’t cover its cost
- You want someone to run the ads for you, not watch them. That’s our lead generation service.
- You need someone to implement fixes. Sentinel finds and explains, it doesn’t execute.
- You’re not running paid ads yet
Before you connect an account.
What happens in the first 24 hours?
Sentinel pulls your last 90 days and sends an Account Baseline Report — what it would have flagged had it been running the whole time. Live alerting starts the same day. There’s no calibration period where you hear nothing.
Will this conflict with my current agency?
No. Sentinel is read-only and doesn’t change anything, so there’s nothing for it to interfere with. Most clients share the alerts directly with whoever manages their campaigns.
What if it flags something wrong?
Reply to the alert and tell us. False positives are logged against the trigger and thresholds are reviewed weekly for your first 60 days. Tuning is part of the service, not an admission something’s broken.
How do I know it’s actually running?
Your weekly summary confirms all 21 scheduled checks completed. If a check ever fails to run, we’re alerted before you are, and if monitoring is interrupted for more than 24 hours we’ll tell you without waiting for you to ask.
Can I cancel?
Any time, from your account. No contract, no notice period. Revoke platform access from inside Meta or Google whenever you want, and monitoring stops immediately.
Do you support TikTok or LinkedIn?
Not yet. Meta and Google only, so we can do both properly. Additional platforms come once these are stable.
Find out what your account has been hiding.
Connect in a few minutes. Get your 90-day baseline report the same day. Cancel inside 14 days and you’re not charged.
Start 14-day free trialFrom $69/mo · Read-only access · Revoke any time