Maskbreak
Free fraud detection API. 1,000 requests an hour, no card.
What it does
Catch antidetect browsers (Kameleo, GoLogin, Multilogin), VPNs, residential proxies and AI bots that most fraud APIs miss. Free tier, under 40 ms.
Know if a visitor hides behind a VPN, proxy, Tor or cloud server — service named when known — and if the browser is a bot or a fake. Under 150 ms, free tier.
Your website sends Maskbreak each visitor, and one call answers whether they are hiding behind a VPN, proxy, Tor or cloud server — naming the service when known (Proton VPN, Bright Data) — and whether the browser itself is a bot or a fake. Your site gets one word back: allow, review or block. Under 150 ms, no CAPTCHAs. "visitor": { "seen": 14, "accounts": 3 }, "signals": [ "vpn" , "proxied" ], "latency_ms": 118 } "device": { "browser": "HeadlessChrome" , "tampering": 0.91 , "emulator": false }, { "decision": "block" , "isSuspicious": true, "network": { "vpn": true, "service": "Proton VPN" , "proxied": false, "tor": false, "dch": false }, Your visit, as Maskbreak sees it…from maskbreak.com
Does the same job
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- IAIPDetective – An API for IP bot detection2022 · ipdetective.io · ▲68
IPDetective collects data from about 60+ different sources such as official cloud provider endpoints and public VPN/Proxy/Tor/Bot net lists. Then aggregates this data into a fast and easy to use API that can be integrated into applications or scripts easily. IPDetective started as a hobby project for my other hobby projects :) and I decided to wrap a simple website around and offer it as a service. Let me know what your thoughts, if you find value in this service or if you have any feature requests.
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