Catch the fraud
no one else sees.
The only API that detects antidetect browsers, residential proxies, and AI bots that every other fraud tool misses — at the device layer, not the IP blocklist. One REST call. Sub-40ms.
// Response — your backend gets this in <40ms { "decision": "block", "risk_score": 98, "network": { "vpn": true, "service": "EXPRESS_VPN" }, "device": { "antidetect": true }, "reasons": ["vpn_detected", "antidetect_browser"] }
A stack your security team has already vetted
Sentinel is not a black box. The full sub-processor list is published in our Cookie Policy and surfaced in the DPA. Trust & Security →
Every fraud tool you've heard of. Caught.
Sentinel detects the entire commercial fraud-tooling ecosystem — antidetect browsers, residential proxies, AI agents, and bot frameworks. Hover any logo to see what we read.
What IPQS, SEON, and Sift miss every day.
A live snapshot of antidetect browser builds, residential proxies, and AI agents Sentinel flagged that legacy fraud APIs returned CLEAN on. Click any cell to see the matched fingerprint.
How Sentinel compares.
Feature presence sourced from each vendor's public product documentation. October 2026.
Sentinel
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|---|---|---|---|---|---|
| Antidetect browser detection | ✓ | — | — | — | — |
| AI agent detection | ✓ | — | — | ~ | — |
| Real device fingerprinting | ✓ | — | ✓ | ✓ | — |
| Sub-40ms global latency | 23ms | 180ms | 220ms | 150ms | 90ms |
| Free production tier | 10K / mo | Trial | Trial | — | Trial |
Sourced from public product pages, October 2026. Latency measured against vendor public test endpoints. Read the full benchmark →
Fraud isn't local.
Neither are we.
Sentinel runs at 270+ Cloudflare PoPs, classifying every request in under 40 ms. Watch live verdicts hit the edge.
The work, in numbers.
Measured against Sentinel's internal benchmark dataset. Q1 2026 report →
The only fraud API that
catches antidetect browsers.
IPQS, SEON, Sift, MaxMind, DataDome — every legacy fraud vendor stops at IP/proxy data. 99% of them don't see Kameleo, GoLogin, Multilogin, or Dolphin{anty} at all. Sentinel fingerprints the browser itself, then layers on the network signal. Two angles, one verdict.
Kameleo, GoLogin, Multilogin, Dolphin{anty}, AdsPower, Incogniton, Linken Sphere, Octobrowser, Hidemium, Vmlogin — every major antidetect build leaves device-level fingerprints we read in real time. 99% of fraud APIs (IPQS, SEON, Sift, MaxMind) ship blind to these. Sentinel doesn't.
Residential proxies (Bright Data, ShadowNode), VPNs, datacenter ASNs, Tor exits — scored at the edge against live data, not stale lists. The network signal stacks on top of the device verdict so multi-accounters can't slip through one layer at a time.
20+ signals across device, network, behaviour collapse into a single isSuspicious boolean. Real-time. No CAPTCHAs, no friction for the people you actually want, no enterprise contract gating the free tier.
Up and running
in minutes.
Three steps. No infrastructure changes. No friction for real users.
Drop one script tag onto your page. Sentinel invisibly collects a session token from every visitor, no cookies required.
Forward the token from your backend using your API key. One POST request returns a full risk assessment in under 40ms.
Block, challenge, or flag based on isSuspicious. Your rules, your logic, zero lock-in.
Every threat vector,
covered.
One simple API call checks for every type of fraud, bots, VPNs, fake accounts, and more.
Catch fraudsters who disguise their location using home internet connections and rotating proxies.
Detect Kameleo, GoLogin, AdsPower, Dolphin{anty}, Multilogin, Incogniton — fingerprint tampering can't hide.
Catch AI agents that click, scroll, and type like humans — the new generation of fraud that bypasses CAPTCHAs.
Block attackers running stolen credentials against your login page, before a single hit lands.
Know when someone is hiding their identity through a VPN or Tor — and see which country they're really in.
Works with any language or platform. One API call drops in next to your existing code.
See how fraud detection stops chargebacks, fake accounts, and trial abuse.
Automated carding bots were flooding checkout with stolen cards. Sentinel identified the scripts in 48 hours and shut them down completely, lifting legitimate pledge rates 12%.
[ Read Case Study → ]Competitors were spinning up proxy-masked accounts to scrape pricing data and burn through trial credits. One API integration stopped it cold in a single afternoon.
[ Read Case Study → ]A coordinated friendly-fraud ring was filing chargeback disputes at scale using residential proxies. Sentinel's behavioral layer flagged the pattern before a single dispute was processed.
[ Read Case Study → ]“Sentinel caught residential-proxy signups our last vendor was returning clean on. The drop in chargebacks paid for the integration in week three.”
“Switched from IPQS in a weekend. Our antidetect-browser catch rate went from 12% to 94% overnight. Sales bots evaporated.”
“The free tier is wild. 1,000 verdicts an hour, in production, no card. We benchmarked Sentinel against three paid vendors and shipped on the free plan.”
“It just works. One POST. 23ms. The Kameleo build version comes back in the response. Nobody else does that.”
Paraphrased feedback from open-beta users. Names withheld for privacy. Named customer references with attribution will be published as we move from beta to GA — contact us for direct beta references on request.
Start catching fraud
in minutes.
One API call. 1,000 free requests/hr. No lock-in, no setup fee.
UK & EU GDPR · No PII stored · DPA on request