GoPay - Payment Gateway Integration Plugin

GoPay Payment Gateway for Osclass Pay is a modern payment extension built on GoPay REST API, designed for secure and reliable one-time payments on classifieds websites. It uses a classic redirect checkout flow: the customer is redirected to GoPay payment page, completes payment, then returns back to your site. Payment confirmation is additionally validated via webhook and API status inquiry. This plugin integrates directly with the Osclass Pay Plugin (version 4.1 or higher) and cannot work without it. The integration is lightweight, without external SDK dependencies, and follows Osclass Pay gateway architecture used across existing payment modules.

GoPay Payment Gateway - Secure redirect checkout for Osclass

Description and Features

GoPay gateway extension is suitable for classifieds portals, service marketplaces, and other Osclass websites that need stable card and local payment processing via GoPay infrastructure. It is focused on compatibility, clear payment state handling, and backend traceability.

• Built with GoPay REST API using direct cURL communication (no external SDK)

• Uses secure OAuth2 token authentication for API calls

• Supports redirect payment flow (customer pays on GoPay page)

• Includes complete callback flow: success, cancel, and webhook endpoints

• Webhook notifications are validated by payment status inquiry against GoPay API

• Handles GoPay payment states (CREATED, PAYMENT_METHOD_CHOSEN, TIMEOUTED, PAID, CANCELED, AUTHORIZED, PARTIALLY_REFUNDED, REFUNDED)

• Marks transaction as paid only when GoPay state is PAID

• Stores and updates gateway transaction ID in Osclass pending table for clear payment tracing

• Includes strict API error handling (cURL, JSON, response validation, missing key checks)

• Compatible with PHP 7.4+ and existing Osclass Pay plugin coding conventions

• No recurring or subscription billing logic; focused on standard one-time payments

Supported payment methods

The plugin does not hardcode one specific payment instrument. GoPay displays methods enabled on your merchant account for selected currency and country.

• Payment cards (as configured in your GoPay account)

• Local/online banking methods available for your GoPay profile and region

• Additional methods enabled by GoPay for your account configuration

Pricing and Fees

This plugin does not add any extra transaction fee by itself. Standard GoPay merchant pricing and processing fees apply according to your contract, country, account type, and payment method mix.

Always verify final pricing directly in your GoPay merchant account or with GoPay sales/support.

Currencies

• CZK, EUR, PLN, HUF, GBP, USD

Final method and currency availability depends on GoPay account setup and merchant country.

Regions and Countries

GoPay availability is based on merchant onboarding region and account configuration. Buyers can pay using methods allowed for your GoPay profile and transaction currency.

• Primary coverage: Central and wider European markets supported by GoPay:

  • Czech Republic
  • Slovakia
  • Poland
  • Hungary

• Merchant availability: depends on GoPay onboarding rules and business type

Always confirm merchant eligibility and method availability on official GoPay documentation and account settings.

High risk payments and Adults content

Acceptance of high-risk verticals and adult-related business models is governed by GoPay compliance policies, onboarding rules, and local regulations.

This gateway should be used only for business categories approved by your GoPay merchant agreement.

References

Home: https://www.gopay.com/ Integration: https://www.gopay.com/sk/integracia/ Technical Docs (EN): https://doc.gopay.com/ Technical Docs (CZ): https://doc.gopay.cz/

GoPay Payment Gateway for Osclass Pay provides a robust and maintainable redirect-based payment integration for classifieds websites. It combines API-driven payment creation, webhook-assisted confirmation, and strict status verification to keep billing flows consistent, auditable, and aligned with Osclass Pay architecture.