The bodyguardfor your media budgets.
Sentinel continuously monitors your Paid media campaigns and protects you from large-scale accidents. The moment a budget runs wild or a conversion drops, you're alerted in real time — before it costs you dearly.
Access on request, after a quick profile review.
The promise
Zero overspend. Zero financial drift.
Behind every overspend, there's a moment when no one was watching. Sentinel is always watching.
Money burns in silence
An overspending campaign, a bid that spirals over the weekend: without continuous monitoring, the planned-budget overrun is only caught at the next report. Too late.
Your conversions vanishing into the void
A broken pixel, tracking that stops reporting, conversions at zero: you can't keep checking everything, on every account, on every platform. Sentinel solves that.
The fatal bill
At month-end, the amount due doesn't match the forecast. The gap can run into tens of thousands of euros. You have to answer for it. All of it could have been avoided.
How it works
Connect your accounts.
Sentinel watches and does the rest.
Connect your platforms in minutes. Sentinel watches and alerts 24/7, without interruption.
Your platforms
Your alert channels
Vos régies affluent
Le radar Sentinel scanne
L'alerte part sur vos canaux
Smart alerts
A budget going off the rails, a campaign running on empty: Sentinel detects anomalies automatically, so you never have to go looking.
Budgets & projection
Sentinel computes hour by hour where you'll land at month-end, per client and per campaign. You anticipate — and you're never caught off guard again.
Tracking audit
Sentinel watches every pixel across all your accounts and catches silent errors before they skew your decisions.
AI explanations
Every alert comes with an explanation and a concrete action to take. You know exactly what to do, right away.
No more juggling between platforms. Sentinel watches everything, 24/7, and only alerts you when it's truly necessary.
The tool in pictures
Monitoring that never sleeps.
Sentinel watches your accounts around the clock 24/7, catches what drifts off track and warns you before the bill blows up.
Dashboard
A synthetic overview per workspace: anomalies and spend at a glance, tracked day over day to see whether your campaigns are following the plan you set.
A measurable impact
The immediate gains you get with Sentinel.
Our monitoring tool doesn't just reassure: it saves time and helps avoid financial losses that can be significant.
1 to 3 h
saved per day,
depending on how many accounts you run. No more manual spreadsheet pacing or jumping between four tabs. The morning briefing reveals in 30 seconds what to watch today.
< 5 min
to set up
OAuth connection, account selection, mapping, labels, rules… With our assisted onboarding, getting Sentinel live is quick and easy.
Who Sentinel is for
Agency or advertiser, Sentinel is built for you
Depending on your role in managing digital budgets, you don't necessarily watch the same things - for the same end goal. Sentinel lets you set it up to fit your needs.
Agency & freelance
Protect every client's budget from a single console.
Your day without Sentinel
Dozens of accounts across several platforms, overruns explained to the client after the fact, and pacing handled in spreadsheets that never warn you.
What Sentinel gives you
- Multi-user (owner / admin / member / viewer roles)
- Budget projection per client
- Daily briefing sorted by financial impact
- 6 alert channels to the right teams
- An isolated workspace per client, supervised from a central console
- Invite clients in read-only access: transparency becomes a sales argument
- Volume pricing that doesn't explode as you add clients
- European hosting, GDPR: contractable with your regulated clients
Advertiser
Stay in control of your media budgets, with 24/7 monitoring.
Your day without Sentinel
Campaigns spread across several platforms, a pixel that breaks without warning, gaps discovered at month-end - on the invoice. Watching by hand takes time no one has, and acquisition sometimes runs blind for hours.
What Sentinel gives you
- Real-time projections
- Pixel audit & anomaly detection
- 0-100 health score & daily briefing
- 6 alert channels + AI Copilot
- An SMS, WhatsApp or Slack alert the moment spend or tracking goes off
- Hourly pace anticipates overruns before they get expensive
- Pixel audit catches dead tracking before it skews your decisions
- A consolidated dashboard to see at a glance what holds up
Our offer
Sentinel connected to your accounts: how much does it cost?
Drag the slider to the number of active ad accounts you want to monitor 24/7.
225 €/ month
~€11.3 / account / month on average
Calculation breakdown
Access on request, no credit card.
FAQ
The questions you're asking.
No. Sentinel is a monitoring and alerting tool: it reads your data read-only and warns you when something goes wrong. You stay in control of every corrective action.
Interested in Sentinel?
Or do you have questions? Let's take the time to discuss your needs, the tool, and see whether it's (probably) a fit for you.