India API Documentation

Getting started

Use Sandbox for integration tests, then switch to Production when you go live. For merchant credentials and environment switching, see the integration guide. For request signing, see signature generation.

API reference

Area	Documentation
Transaction	Pay-in collection · Disbursement (pay-out)
Inquiry	Transaction status · Balance inquiry
Settlement	Settlement · Settlement SLA
Payment methods	Payment methods

Environment Configuration

Environment	Protocol	Media Type	Base URL
Sandbox	HTTPS	application/json	https://sandbox-gateway.smilepayz.com
Production	HTTPS	application/json	https://gateway.smilepayz.com

API Overview

India's digital payment ecosystem has experienced remarkable transformation, driven by innovative Payment Gateway APIs that enable seamless financial transactions. Our India API solution provides comprehensive payment processing capabilities tailored to the Indian market.

Key Features

• Diverse Payment Methods: Support for NEFT, RTGS, IMPS, and other Indian banking protocols
• Local Payment Integration: Seamless integration with India's unique payment innovations
• Enterprise Security: Bank-grade security and regulatory compliance
• Real-Time Processing: Instant transaction processing with comprehensive analytics
• Developer-Friendly: Extensive documentation and developer support
• International Support: Cross-border transaction capabilities
• Flexible Integration: Customizable solutions for diverse business needs

Development Resources

Code examples

smilepayz-demo-java →

• PayInRequestDemo.java — Pay-in
• PayoutRequestDemo.java — Pay-out
• InquiryBalanceDemo.java — Balance inquiry
• InquiryOrderStatusDemo.java — Order / transaction status
• SignatureUtils.java — Signing helpers (minify, RSA-SHA256)

smilepayz-demo-python →

• pay_in_request_demo.py — Pay-in
• pay_out_request_demo.py — Pay-out
• balance_inquiry.py — Balance inquiry
• status_inquiry.py — Order / transaction status
• Tool_Sign.py — Signing helpers (minify, RSA-SHA256)

smilepayz-demo-node.js →

• pay_in_request_demo.js — Pay-in
• pay_out_request_demo.js — Pay-out
• inquiry_balance_demo.js — Balance inquiry
• inquiry_order_status.js — Order / transaction status
• SignatureUtils.js — Signing helpers (minify, RSA-SHA256)

smilepayz-sdk-php →

• PayInRequestDemo.php — Pay-in
• PayoutRequestDemo.php — Pay-out
• InquiryBalanceDemo.php — Balance inquiry
• InquiryOrderStatusDemo.php — Order / transaction status
• Signature.php — Signing helpers (minify, RSA-SHA256)

smilepayz-demo-cs →

• PayInRequestDemo.cs — Pay-in
• PayOutRequestDemo.cs — Pay-out
• BalanceInquiryDemo.cs — Balance inquiry
• OrderStatusInquiryDemo.cs — Order / transaction status
• SignatureUtils.cs — Signing helpers (minify, RSA-SHA256)

smilepayz-demo-golang →

• PayInRequestDemoV2.go — Pay-in
• PayoutRequestDemoV2.go — Pay-out
• BalanceInquiryDemoV2.go — Balance inquiry
• OrderStatusInquiryDemoV2.go — Order / transaction status
• SignatureUtils.go — Signing helpers (minify, RSA-SHA256)