Stop bad signups and chargebacks
with one API
Fidro adds a single fraud decision engine to your signup and Stripe payment flows—email, IP, geolocation, blocklists, and chargeback prevention in one place. Start free in under 2 minutes.
No credit card required with our always-free plan.
Bad signups and risky payments slow you down
Disposable emails, fake accounts, and stolen cards pollute your product, skew your metrics, and create expensive chargebacks.
- Free tiers get abused by throwaway emails and automated signups.
- Support and product teams waste time dealing with spam accounts and bad data.
- Chargebacks and bank disputes eat into revenue and can get your merchant account suspended.
Fidro plugs into the flows you already have
Add one API call to your signup and Stripe payment flows to get a single risk score and recommendation you can act on in code.
- Validate emails, IPs, and geolocation on every signup.
- Score Stripe transactions with chargeback-focused risk checks.
- Use human-readable risk messages to decide whether to allow, review, or block.
All your fraud checks in one API
Clean up signups, keep risky traffic out, and protect revenue with a single, developer-friendly service.
Catch bad email addresses
RFC-compliant syntax checking, domain verification, disposable email detection, and custom blocklists.
Block bad IP addresses
Detect VPNs, proxies, Tor nodes, and problematic ISPs. Real-time geolocation with location matching.
Protect your reputation
Automatic chargeback prevention with real-time transaction analysis and intelligent refund recommendations.
Score each action
Weighted algorithm with configurable risk weights and severity levels. Human-readable risk messages.
Build your own blocklists
Manage your own blocklists with severity levels. Share entries across accounts or keep them private.
Built for developers
RESTful API with comprehensive documentation. Easy integration with clear error messages and response formats.
How It Works
Get started in minutes with our simple integration
Sign Up
Create your account and get your API key in seconds. Start on the free plan—no credit card required.
Integrate
Make a simple API call to validate emails or IPs
Protect
Get instant risk scores and protect your business
Try It Out
Take our email validation service for a spin
Free demo limited to 1 request per 30 seconds per IP. Previously tested emails are cached for 24 hours. Sign up to start on the free plan with 1,000 validations/month.
Start free, scale as you grow
Start with the free developer plan, then upgrade only when your volume and fraud needs grow. All plans include our core fraud detection features.
Free
Perfect for getting started
- 1,000 validations/month
- Core email & IP checks
- Community support
Starter
For growing businesses
- 10,000 validations/month
- All fraud checks
- Email support
- Custom blocklists
Pro
For established companies
- 100,000 validations/month
- Stripe integration
- Priority support
- Advanced analytics
Enterprise
For large organizations
- Unlimited validations
- Dedicated support
- Custom integrations
- SLA guarantee
Ready to Get Started?
Start protecting your business from fraud today. No credit card required.
Get Started Free