4pay.online Platform
4pay.online is a white-label SaaS/BaaS payment infrastructure for companies that want to launch their own payment product — without building everything from scratch.
A single integration unlocks 275+ payment providers, multi-currency FX, crypto pay-in/pay-out, recurring billing, and a fully operational management console.
Who is this for?
This documentation is organized around two distinct roles:
🏦 Clients — PSPs, Banks, Fintechs
You are a Client if you are deploying 4pay.online as your payment infrastructure and onboarding your own merchants (partners) to it.
You need:
- Access to the Admin Console to manage providers, partners, and terminals
- Knowledge of available payment providers and how to configure them
- Tools to monitor transactions, balances, and operations across all your merchants
🛒 Partners — Merchants
You are a Partner if you have been connected to 4pay.online by a client (PSP or platform) and need to integrate payment acceptance into your product.
You need:
- An API key to authenticate your requests
- Endpoints to create transactions, check statuses, and process refunds
- Webhook configuration to receive real-time payment notifications
Platform at a Glance
| Feature | Details |
|---|---|
| API Base URL | https://4pay.online/api/v1 |
| Protocols | REST / JSON |
| Authentication | API Key (x-api-key) or Bearer Token |
| Providers | 275+ integrations |
| Currencies | 150+ fiat + major crypto assets |
| Regions | Global — Europe, Americas, APAC, MENA, Africa, CIS |
| Admin Console | 4pay.online/admin_area |
| Partner Area | 4pay.online/partner_area |
Quick Links
| I want to… | Go to |
|---|---|
| Browse available payment providers | Provider Catalog |
| Set up my first terminal | Terminals & Routing |
| Create my first transaction | Quick Start for Partners |
| Understand webhook events | Webhooks |
| Look up error codes | Error Reference |
| Test in sandbox | Sandbox & Testing |
Support
- Email: support@4pay.online
- Legal: legal@4pay.online
- Website: 4pay.online