API & Webhook Integration
Connect your applications with supported payment platforms using structured APIs, secure authentication, webhook handling and appropriate transaction workflows. FourPaySave supports integration from technical planning through UAT and production readiness.
Integration Infrastructure
Explore our core developer components built to handle secure transaction data routing.
Integration Scope
Build supported server-to-server API requests, process responses, and handle errors effectively.
System Architecture
Establish secure backend-to-backend workflows with robust webhook handling and idempotency.
Security & Control
Enforce HTTPS, server-side secrets, signature validation, and strict API access.
API Integration Scope
Connect your applications with supported payment platforms using structured APIs. Our integration scope covers everything from authentication to comprehensive error handling.
Integration Details
Authentication & Requests
Configure supported API authentication mechanisms and build applicable server-to-server API requests.
Response Handling
Process success, failure, pending and error responses appropriately to maintain accurate state.
Webhooks & Signatures
Receive applicable asynchronous transaction notifications and implement supported webhook verification mechanisms.
Idempotency & Errors
Use appropriate request controls to minimize unintended duplicate processing. Implement appropriate retries, logging and failure-handling workflows.
Recommended Architecture
We strongly recommend a secure, multi-layered architecture to route transactions safely from your front-end to authorized payment partners while processing async updates via your backend.
Integration Details
1. Your Website/App
The customer-facing interface where the transaction originates without exposing sensitive API credentials.
2. Your Secure Backend
Your server acts as the secure intermediary, holding secret credentials and formulating API requests.
3. FourPaySave Integration Layer
The applicable integration workflow that securely routes your requests to the payment processor.
4. Authorized Partner & Webhooks
The authorized payment partner processes the request. Webhooks and transaction status updates return directly to your configured secure backend endpoint.
Security Recommendations
Security is paramount when connecting financial systems. Follow these critical guidelines to protect your credentials, validate data integrity, and prevent unauthorized access.
Integration Details
Transport & Secrets
Use HTTPS for all connections. Keep secret credentials strictly server-side; do not expose secret API credentials in frontend code.
Validation & Signatures
Validate webhook signatures where supported to verify authenticity, and validate transaction status before fulfilling an order.
Access Restrictions
Restrict unnecessary API access to minimize your attack surface.
Logging & Safety
Maintain appropriate transaction logs for auditing and implement idempotency where supported to prevent duplicate charges.
Ready to Build Your Integration?
Contact our technical team for integration guidelines, test credentials, and architecture recommendations.
Start Technical Planning
