API Integration Services for Fintech & Banking in India
NxtBanking provides end-to-end API integration services for fintech companies, banks, NBFCs, and enterprises across India. Whether you need to integrate a payment gateway, connect to NPCI’s BBPS, or build a multi-bank payout system, our team of fintech API specialists delivers fast, compliant, and scalable integrations.
What Are API Integration Services?
API integration connects your software application to external services — such as banks, payment networks, or government systems — through application programming interfaces (APIs). In fintech, this means connecting your app to NPCI, UPI, BBPS, NEFT/RTGS systems, or KYC databases.
Our API Integration Services
Payment API Integration
Integrate UPI collection, payment gateways, and QR code payments into your app with our developer-friendly SDKs supporting REST, JSON, and webhook callbacks.
Payout API Integration
Connect to multi-bank payout rails — IMPS, NEFT, RTGS, UPI — for instant fund disbursement with real-time status webhooks and automated reconciliation.
BBPS API Integration
Become a BBPS bill collection agent by integrating our BBPS API — covering 20,000+ billers, real-time bill fetch, payment confirmation, and dispute management.
KYC & Verification API Integration
Automate customer onboarding with PAN, Aadhaar, Bank Account, UPI VPA, Voter ID, and Driving Licence verification APIs — all UIDAI and RBI compliant.
AEPS & Micro ATM API Integration
Enable Aadhaar-based cash transactions at Business Correspondent (BC) points using our AEPS and Micro ATM APIs — NPCI certified and bank-grade secure.
How We Work
- Discovery Call — Understand your use case, tech stack, and compliance needs
- Sandbox Access — Get API keys and test environment within 24 hours
- Integration Support — Dedicated developer support throughout integration
- UAT & Testing — Thorough testing in staging before production go-live
- Production Launch — Compliance review and production API credentials
- Ongoing Support — 24/7 monitoring and technical support post-launch
Frequently Asked Questions
How long does API integration take with NxtBanking?
Most API integrations can be completed in 2-5 days with our sandbox environment and technical support. Complex multi-API integrations typically take 1-2 weeks.
Do you provide API documentation?
Yes. Full API documentation, Postman collections, code samples in PHP, Python, Node.js, and Java are provided. Our developer portal gives you everything needed to integrate quickly.
What programming languages do your APIs support?
Our APIs are REST-based and work with any language — PHP, Python, Node.js, Java, .NET, Ruby, and more. We provide official SDKs for the most common languages.