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Overview
  • Get Started
  • Create AppID
  • Authentication
  • Process Request
  • Webhook
  • Environments
Payment Scenarios
  • Payment Link
  • Batch MIT Transaction
  • Payment App to App
  • Direct Payment
  • Payment ECR
    • ECR Connection
    • Cloud ECR
    • ECR Interface Protocol
    • ECR via RS232 (Retail)
    • ECR via RS232 (Transit)
  • Payment SDK
    • iOS SDK
    • Android SDK
    • Flutter SDK
  • Payment for Taximeter
    • Link the taximeter via RS232
    • Link the taximeter via Bluetooth
  • Payment ECR 1.0
    • ECR Integration Process
    • ECR API
    • ECR Payment Json
Payment
  • Available Currencies
  • Acquirers
  • Available Payment Methods
  • Payment Enum
  • Payment Data
Treasury Scenarios
  • Card Issuing
Open API
  • Introduction
  • Customer Management API
  • MIT Management API
  • Order Management API
  • Recurring Management API
  • Issuing Management API
  • Payout Management
Resources
  • Test Cards
  • Advanced Query DSL
  • Source Codes
  • Error Codes

Environments

All Wonder Gateway OpenAPIs use the same endpoint, different environments provide different access to the domain name, except for the domain name all other information is identical (including API Uri / Header etc...).

EnvironmentDomain
Sandboxhttps://gateway-stg.wonder.today
Productionhttps://gateway.wonder.today
Venus Pay

Venus Pay — payments infrastructure for Hong Kong SMEs.

Venus Pay Limited operates as a payment facilitator. Acquiring services are provided by our licensed partner. Funds settle directly to the merchant’s nominated bank account.
sales@venuspay.com.hk
© 2026 Venus Pay Limited.

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