API Overview

OnSefy is an intelligent, real-time fraud detection and validation API that empowers you to instantly assess the authenticity of user signups, transactions, and digital interactions. Powered by advanced AI algorithms, OnSefy analyzes a rich set of signals—like email, phone number, IP address, user-agent, and more—to deliver accurate risk scores and actionable insights.

Whether you’re combating bots, blocking spam signups, detecting VPN usage, or filtering out fake accounts, OnSefy helps you make smarter, faster decisions to protect your platform and users with confidence.

Start securing your digital ecosystem—effortlessly and intelligently—with OnSefy.

Why Use ?#

• OnSefy makes it easy to integrate fraud prevention into your application without needing a full in-house risk team.

What the API Does ?#

The OnSefy API enables you to:

✅ Validate user inputs (email, phone, IP, name, and more)

🔍 Detect signs of fraudulent or suspicious behavior

📊 Get a risk score and classification (Legit / Suspicious / Fraud)

🚫 Block or flag known bad actors (spam, bots, VPNs, temp emails)

💡 Easily integrate with your backend or signup workflows

Use Cases#

Here are a few common ways you can use OnSefy:

🛡 Signup Protection: Block bots, fake accounts, and disposable emails at registration

💬 Lead Scoring: Pre-qualify leads with risk scoring before passing them to sales

🧾 Form Validation: Reduce junk or spam form submissions

🏪 Marketplace Trust: Screen buyers and sellers for trustworthiness

🔐 Verify phone numbers and emails before allowing access in real-time

💳 Fraud Prevention: Flag high-risk users before transactions occur

📉 Reduce chargebacks and abuse by detecting high-risk users early