Fraud Detection APIs
Fraud detection APIs work from different signals. FingerprintJS Pro identifies browsers and devices with bot and VPN flags, FraudLabs Pro scores e-commerce orders from IP, billing and payment data, and OpenSanctions screens people and companies against sanctions and PEP lists. Smaller tools parse user agents, look up card BINs or risk-score crypto wallets.
| API | Pricing | Auth | Format | Free tier | Status |
|---|---|---|---|---|---|
AI DECISIONSScreens crypto wallet addresses for sanctions exposure, mixer use and illicit-wallet links across six chains. Identity & Security › Fraud Detection | Freemium | API key | JSON | <100/day | Live |
ChronoVerifyChecks a photo's capture time, location metadata, C2PA credentials and signs of editing Identity & Security › Fraud Detection | Freemium | API key | JSON | — | Untested |
CompliAPIScreens crypto addresses, emails, websites, and IDs against OFAC, EU, UK sanctions and crime lists. Identity & Security › Fraud Detection | Freemium | API key | JSON | 100–1k/day | Live |
FidroScores emails, IPs and Stripe payments for fraud risk using VPN, proxy and Tor detection. Identity & Security › Fraud Detection | Freemium | API key | JSON | <100/day | Live |
FingerprintJS ProBrowser/device fingerprinting API returning a stable visitor ID plus bot, VPN, and tampering signals. Identity & Security › Fraud Detection | Freemium | API key | JSON | <100/day | Live |
FraudLabs ProScreens e-commerce orders for fraud risk using IP, billing, and payment signals, returns a 1-100 score. Identity & Security › Fraud Detection | Freemium | API key | JSON | <100/day | Untested |
IIN APILooks up a card's issuing bank, brand, type and country from its first 6-11 digits (BIN/IIN). Identity & Security › Fraud Detection | Freemium | API key | JSON | <100/day | Live |
OpenSanctionsScreens people and companies against global sanctions, PEP and watchlist data for AML/KYC checks. Identity & Security › Fraud Detection | Freemium | API key | JSON | — | Live |
TrueguardDetects disposable emails, VPN/proxy use, device fingerprints and bot signups for fraud checks. Identity & Security › Fraud Detection | Freemium | API key | JSON | <100/day | Untested |
TWZRD Agent IntelRisk-scores Solana agent/merchant wallets (wash trading, trust tier) for pre-payment checks. Identity & Security › Fraud Detection | Freemium | Other | JSON | — | Live |
UserAgent.AppParses raw user-agent strings into browser, OS, device, and bot details. Identity & Security › Fraud Detection | Freemium | API key | JSON | 100–1k/day | Live |
userstackParses a User-Agent string into device type, browser, OS and crawler-detection details. Identity & Security › Fraud Detection | Freemium | API key | JSON | <100/day | Live |
VerifyEDSearches 912K+ government-sourced school records and flags likely diploma mills for admissions review. Identity & Security › Fraud Detection | Freemium | None | JSON | Unlimited | Live |
WhatIsMyBrowser.com APIDetects browser, OS, device and bots from user agents and client hints, flagging fake or risky requests. Identity & Security › Fraud Detection | Freemium | API key | JSON | 100–1k/day | Live |
AI DECISIONSFreemiumLive
Screens crypto wallet addresses for sanctions exposure, mixer use and illicit-wallet links across six chains.
API key · JSON
<100/day
no machine-readable spec
ChronoVerifyFreemiumUntested
Checks a photo's capture time, location metadata, C2PA credentials and signs of editing
API key · JSON
—
OpenAPI spec · llms.txt
CompliAPIFreemiumLive
Screens crypto addresses, emails, websites, and IDs against OFAC, EU, UK sanctions and crime lists.
API key · JSON
100–1k/day
MCP server · llms.txt
FidroFreemiumLive
Scores emails, IPs and Stripe payments for fraud risk using VPN, proxy and Tor detection.
API key · JSON
<100/day
MCP server · llms.txt
FingerprintJS ProFreemiumLive
Browser/device fingerprinting API returning a stable visitor ID plus bot, VPN, and tampering signals.
API key · JSON
<100/day
llms.txt
FraudLabs ProFreemiumUntested
Screens e-commerce orders for fraud risk using IP, billing, and payment signals, returns a 1-100 score.
API key · JSON
<100/day
OpenAPI spec · llms.txt
IIN APIFreemiumLive
Looks up a card's issuing bank, brand, type and country from its first 6-11 digits (BIN/IIN).
API key · JSON
<100/day
no machine-readable spec
OpenSanctionsFreemiumLive
Screens people and companies against global sanctions, PEP and watchlist data for AML/KYC checks.
API key · JSON
—
OpenAPI spec · llms.txt
TrueguardFreemiumUntested
Detects disposable emails, VPN/proxy use, device fingerprints and bot signups for fraud checks.
API key · JSON
<100/day
llms.txt
TWZRD Agent IntelFreemiumLive
Risk-scores Solana agent/merchant wallets (wash trading, trust tier) for pre-payment checks.
Other · JSON
—
OpenAPI spec · MCP server · llms.txt
UserAgent.AppFreemiumLive
Parses raw user-agent strings into browser, OS, device, and bot details.
API key · JSON
100–1k/day
no machine-readable spec
userstackFreemiumLive
Parses a User-Agent string into device type, browser, OS and crawler-detection details.
API key · JSON
<100/day
llms.txt
VerifyEDFreemiumLive
Searches 912K+ government-sourced school records and flags likely diploma mills for admissions review.
None · JSON
Unlimited
OpenAPI spec · llms.txt
WhatIsMyBrowser.com APIFreemiumLive
Detects browser, OS, device and bots from user agents and client hints, flagging fake or risky requests.
API key · JSON
100–1k/day
no machine-readable spec
Nothing matches that combination. Clear the filters and start from the category.
Choosing a Fraud Detection API
Is there a free Fraud Detection API?
Yes. FingerprintJS Pro, FraudLabs Pro, OpenSanctions, AI DECISIONS, ChronoVerify and 9 others have a free tier alongside paid plans.
Which Fraud Detection APIs work without an API key?
VerifyED needs no key or sign-up, so you can try it with a plain request.
Can I use Fraud Detection APIs in a commercial project?
FingerprintJS Pro, Fidro, IIN API, VerifyED and WhatIsMyBrowser.com API permit commercial use. OpenSanctions and userstack restrict it, for example to non-commercial or attributed use, so read the terms first.
Which Fraud Detection APIs work with AI agents?
TWZRD Agent Intel has both an MCP server and an OpenAPI spec. CompliAPI and Fidro have an MCP server, so an AI agent can call them directly. FraudLabs Pro, OpenSanctions, ChronoVerify and VerifyED publish an OpenAPI spec for generating clients and tools.
More in Identity & Security: Auth APIs · Email Verification APIs · Phone Validation APIs · Threat Intel APIs · Background Checks APIs · KYC & Identity Verification APIs · Website Security APIs
Related: Payments APIs · IP Geolocation APIs