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Block Marketplace Fraud on Both Sides

On a marketplace, fraud comes from both sides: fake sellers with scam listings and buyers with stolen cards. Fidro checks every participant's email and IP with one API, at signup and at transaction time, so you can stop fake accounts before they cost anyone their trust.

What is Fidro?

Fidro is a fraud detection API for developers. One call checks the email, the IP and the network, remembers what it has seen before, and tells your code to allow, challenge or block, so you stop fake signups and stolen cards without building your own scoring. The free plan covers 200 validations a month, no credit card.

The problem

Fake storefronts, scam listings and fraudulent buyers all chip away at the one thing a marketplace really sells: trust. And both sides of your platform need protecting.

How Fidro fixes it

Call Fidro when buyers and sellers register, and again when they trade. It checks the email, the IP and the network, remembers repeat signups from one IP or email pattern, and answers allow, challenge or block for every participant.

What you get

Seller checks

Check seller emails and IPs at registration to stop fake storefronts and scam accounts before they list anything.

Buyer checks

Score buyers at purchase time to protect your sellers from fraudulent orders.

Patterns across your platform

Spot one IP creating several seller accounts, or one email pattern behind a run of new buyers.

2 sides
Buyers and sellers
Real-time
Scoring
Every plan
Memory included

Keep exploring

Try the free checkers on a real address, read every field in the docs, or see how Fidro compares.

All features API documentation Free email checker Free IP checker Compare Fidro

Frequently Asked Questions

How do I prevent fraud on a two-sided marketplace?
Check both buyers and sellers, at registration and again when they trade. Fidro checks each email and IP, remembers repeat signups, and answers allow, challenge or block for every participant.
How do I stop fake seller accounts?
Check every new seller's email and IP at registration. Fidro catches disposable and risky email domains, sellers hiding behind VPNs, and several accounts being created from the same IP or email pattern.
Can Fidro detect multi-account abuse on my platform?
Yes. Send event: signup with each registration and Fidro counts signups per IP, network and email pattern, flagging the bursts that point to one person running many accounts.
How do I protect buyers from fraudulent sellers?
Check sellers when they register and again at key moments, like their first listing or a payout. Hold the sellers Fidro challenges for a manual review before they can list.

Start catching bad signups in the next 5 minutes

Create your account, grab your API key, and send your first request. Free plan with 200 validations/month. No credit card. Cancel anytime.

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