Next-Generation
Payment Infrastructure
Integrate FamPay automatic payment verification into your apps with blazing-fast APIs and military-grade security.
How It Works
Simple 3-step integration for automatic payment verification
Create Account
Register with email OTP, set your password, and login to your developer dashboard.
Generate QR Code
Call the genqr API with your UPI ID, amount, and name to instantly create UPI QR codes.
Verify Payment
Use UTR or FamPay Txn ID — our system scans your Gmail inbox to confirm transactions automatically.
Why Choose fusioniuApi
Enterprise-grade features built for developers
Military-Grade Security
SSL-encrypted APIs and zero data retention beyond verification.
Real-Time Verification
Instant payment confirmation via Gmail IMAP scanning. No manual checks required.
Fraud Prevention
Duplicate UTR detection and amount validation prevent double-spending and replay attacks.
Dynamic UPI QR
Generate dynamic UPI QR codes instantly with merchant name, amount and UPI ID baked in.
Detailed Analytics
Track all your API calls and statuses from the developer dashboard.
24/7 Developer Support
Direct access via Telegram @btwspark. Report issues, request features anytime.
Without vs With Signup
You can try the API instantly — sign up to unlock the full experience.
Try it free
- Public API access (check & QR generator)
- Use your own Gmail + App Password
- Read the full documentation
- · No personal dashboard
- · No request history / logs
- · No saved settings
Full experience
- Everything in Without Signup
- Personal dashboard
- Full request history & logs
- Saved Gmail / App Password
- Interactive API playground
- Priority support from @btwspark
Ready to integrate?
Create your free account and start verifying payments in minutes.
What is fusioniuApi?
fusioniuApi is a developer API that generates UPI payment QR codes and verifies payments by matching the UTR or transaction ID in a Gmail inbox. It works with plain GET requests and returns JSON. Create an account, generate an API key, and call two endpoints: genqr and check.