ϟ
Real-time alerts
Consent gaps reach legal, privacy, marketing and IT as they happen, so they’re closed before a regulator, plaintiff firm or auditor finds them.
Independent consent verification
Prove your site honors every choice.
Your consent banner records what a visitor chose. Sentinel Insights verifies what your site did next.
We monitor 100% of real user sessions in real time and check whether every tag, pixel and data flow respected that visitor’s consent state. When something fires that shouldn’t, you get an alert and a timestamped record of what ran, when, and under which conditions.
Independent verification
Works with your existing stack
100%
of real user sessions
5 consent states
verified
1 tag.
Deployed in a day.
Your CMP.
Independently verified.
Beyond the banner
Can a consent management platform verify itself?
Consent breaks after the banner,
not inside it.
not inside it.
Not independently. A consent management platform (CMP) collects the choice and passes it to your tags. Whether those tags then behave is a separate question, and asking the CMP to answer it means the platform is grading its own homework.
A new vendor gets added. A tag loads before the CMP does. A campaign pixel ignores the signal. A site release changes the load order. None of that shows up in your CMP dashboard, because the CMP did its job. The tags didn’t.
Sentinel sits outside your CMP and your tag manager. It works alongside both and watches the result.
Visitor choice Collected by your CMP
→
Tag behavior What actually runs
→
Sentinel verifies Independent evidence
Fits your existing stack
Works with your CMP and tag manager.
Sentinel doesn’t replace your consent platform or your tag manager. It runs alongside them as one tag, usually deployed through your tag manager, and verifies what happens after the choice, whichever tools you use.
Consent management platforms
OneTrust
TrustArc
Ketch
Clarip
Truyo
Syrenis
Didomi
Osano
Securiti
Usercentrics (Cookiebot)
CookieYes
+ any other CMP
Tag management systems
Google Tag Manager
Adobe Experience Platform Tags (Adobe Launch)
Tealium iQ
+ any other tag manager
Using something not listed? Run a free 60-second scan ↗ and see what your site does today.
Every choice, every session
The five consent states we verify.
A banner click is only the beginning. Explore what we check—and what a failure looks like.
BEFORE THE FIRST CHOICE
No interaction
Nothing non-essential fires before the visitor makes a choice.
⚑
What a failure looks like
Analytics and ad pixels load on page view, before the banner is answered.
ⓘ We also detect “Do Not Track” and similar browser privacy signals.
From visibility to action
What you get.
◷
Timestamped evidence
Time-stamped logs of user choices, active and inactive tags, and data flows per page and vendor. Concrete proof that tracking ran only when and where consent allowed it.
⌁
Guided remediation
Non-compliant tags are flagged with suggested rule or configuration changes, and every fix is recorded. The result is a living audit trail for internal reviews, DSAR responses and regulator inquiries.
◎
Coverage audits can’t reach
Monitoring runs on real visitor traffic, including logged-in, post-authentication pages that scripted scanners never see.
Always on. Always current.
Monitoring vs. a one-time audit.
| Comparison | One-time audit | Sentinel continuous monitoring |
|---|---|---|
| Frequency | Periodic, on demand | Real time, always on |
| Scope | Sampled, scripted sessions | 100% of real user traffic, including post-authenticated pages |
| Output | A snapshot report | Alerts, evidence and a running audit trail |
| When it goes stale | The next site release | It doesn’t |
An audit tells you consent worked on the day it was tested. Your tag stack changes every week.
One source of truth
Built for the people who answer for consent.
Legal and General Counsel
When a demand letter arrives, the question is what actually happened when a user made a choice. Sentinel gives you timestamped, production-level evidence to answer it.
Privacy and compliance
Regulation-aware dashboards show how each region (EU, US, Canada and Quebec) performs against local standards, including opt-in vs. opt-out rules and stricter regimes like Law 25.
Marketing
Keep the stack you rely on without carrying the risk. Find out which tags break consent before they cost you a campaign or your data.
IT and analytics
Stop testing consent by hand. One tag, set up in one day, replaces manual consent QA across every release.
Across borders. Beyond checkboxes.
Regulations we support.
Regulators ask the same question everywhere: when a user made a choice, what actually happened?
CCPA / CPRA
GDPR
PIPEDA
Quebec Law 25
Sentinel is regulation-agnostic. We monitor for laws where compliance depends on how tags and signals behave in live sessions, including CCPA/CPRA, GDPR, PIPEDA and Quebec Law 25.
Under the California Consumer Privacy Act regulations, businesses must treat an opt-out preference signal such as GPC as a valid request to opt out of sale or sharing ( California Privacy Protection Agency ↗). In 2022, the California Attorney General settled with Sephora for $1.2 million, in part for failing to process GPC opt-outs ( California Attorney General ↗).
Proof in production
0.1 %
of pageviews with consent issues
across six monitored domains
across six monitored domains
A large multi-brand enterprise reduced consent issues to 0.1% of pageviews across six monitored domains, a measurable outcome presented to compliance, legal and executive stakeholders as evidence of active governance.Source: Sentinel Insights proprietary scan data, 2026, six monitored domains.
Simple to start. Built to stay.
How it works.
One tag.
Deploy the Sentinel tag.
One day.
We set up your rules and dashboard in a day.
One team.
Legal, IT and marketing work from the same evidence.
✧
Meet Ask Sentinel. Our AI assistant helps your team investigate findings and turn them into fixes.
Your consent questions, answered
Frequently asked questions.
01 Why do tags fire before a visitor makes a consent choice?
The page’s own scripts can run before the CMP loads. Sentinel checks whether non-essential tags fire before a visitor makes a choice.
02 Why can tracking restart after a visitor clicks Reject?
Consent state can be lost during navigation or subdomain changes. Sentinel checks that non-essential tags stay off on every page for the whole session.
03 Does Sentinel verify Global Privacy Control (GPC)?
Yes. Sentinel checks whether the browser’s GPC signal is honored as an opt-out, with or without a banner click, and flags third-party scripts that still fire or transmit data.
04 What happens when a vendor has no consent category?
A tag added after the CMP was configured may belong to no consent category. Sentinel flags non-compliant tag activity so your team can review the vendor mapping and configuration.
05 Can Sentinel detect hard-coded pixels outside the tag manager?
Yes. Sentinel watches what runs on your site, including hard-coded pixels outside the tag manager that the CMP may not control.
06 How does Sentinel check whether consent withdrawal takes effect?
Sentinel checks that tags stop after a visitor withdraws consent and flags tracking that continues under an earlier consent choice.
Your banner made a promise. See if your site keeps it.
Find out what happens after the choice.
