Catch fraud hiding
behind clean IPs.
One API call shows you the device behind every request. Sentinel catches antidetect browsers, residential proxies, bots, and AI agents in under 40 ms — with zero friction for real customers.
The only fraud API that
catches antidetect browsers.
Most fraud tools stop at IP and proxy data — the browser itself goes unexamined. Sentinel fingerprints the device first, then layers network intelligence on top. Two angles, one verdict.
Kameleo, GoLogin, Multilogin, Dolphin{anty}, AdsPower — every major antidetect build leaves device-level fingerprints Sentinel reads in real time. Most fraud APIs never see them.
Residential proxies, VPNs, datacenter ASNs, and Tor exits — scored at the edge against live data, not stale lists. The network signal stacks on the device verdict, so attackers can't slip through one layer at a time.
400+ device, network, and behavioural signals collapse into one decision — allow, review, or block. Real-time, no CAPTCHAs, no friction for the customers you want.
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.
How Sentinel compares.
Feature presence sourced from each vendor's public product documentation. June 2026.
Sentinel
|
|
|
|
|
|
|---|---|---|---|---|---|
| Antidetect browser detection | ✓ | — | — | — | — |
| AI agent detection | ✓ | — | — | ~ | — |
| Residential proxy detection | ✓ | ~ | — | — | ~ |
| Real device fingerprinting | ✓ | — | ✓ | ✓ | — |
| Tor exit node detection | ✓ | ✓ | ✓ | — | ✓ |
| CAPTCHA-free bot detection | ✓ | — | — | — | — |
| Client-side SDK token | ✓ | — | ~ | ✓ | — |
| Sub-40ms global latency | 23ms | 180ms | 220ms | 150ms | 90ms |
| Free production tier | 1,000 / hr | Trial | Trial | — | Trial |
| Transparent public pricing | ✓ | ~ | — | — | ✓ |
| Self-serve, 5-min integration | ✓ | ✓ | ~ | — | ✓ |
Sourced from public product pages, June 2026. Latency measured against vendor public test endpoints. Read the full benchmark →
See how fraud detection stops chargebacks, fake accounts, and trial abuse.
A fraud ring was inflating pledge counts through residential proxies — every "backer" looked clean. Sentinel found the ASN signature the ring couldn't randomize and collapsed it within 30 days.
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.”
“We benchmarked Sentinel against three paid vendors and shipped on the free plan — 1,000 verdicts an hour, in production, no card.”
Paraphrased feedback from open-beta users; names withheld for privacy. Attributed reviews live on Trustpilot and G2.
Start catching fraud
in minutes.
One API call. Free tier: 1,000 requests/hour. No card, no expiry.
UK & EU GDPR · Data-minimized by design · DPA on request
