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Developer & Payment Integration Resources

WONWOW’s payment program uses established payment infrastructure and documented integration patterns. This page provides public technical references for developers, merchants and technology partners evaluating how WONWOW connects merchant onboarding, gateway services, payment processing and event-driven workflows.

Infinicept PayFac enablement and merchant onboarding

Infinicept publicly describes its platform as Payment Facilitator enablement infrastructure with merchant application processing, automated underwriting workflows, boarding, KYC/compliance checks, merchant-management tools, API key management and webhook configuration.

NMI gateway, APIs, webhooks and SDKs

NMI provides payment-gateway infrastructure and public developer documentation for merchant onboarding, payment processing, account management, APIs, webhooks, sandbox testing, SDKs and libraries. WONWOW’s implementation preserves NMI gateway capabilities where applicable to the merchant program.

Fiserv North processing connectivity

NMI has confirmed that its WONWOW gateway relationship is certified to process credit-card transactions to Fiserv North. Infinicept / Launchpay can generate the merchant VAR information used in the boarding workflow. Processor availability, settlement, acquiring relationships and merchant-specific terms remain subject to underwriting and onboarding.

Fiserv merchant support resources

NMI-supported card-present hardware

For WONWOW's NMI gateway architecture, NMI has identified the Ingenico Axium SmartPOS series for Android-based deployments and the Ingenico Lane 3600, Lane 5000 and Lane 7000 for countertop deployments using ChipDNA Cloud. These devices can be deployed alongside a merchant's existing POS where the configuration is compatible. NMI does not currently support PAX devices in this architecture. Supported devices use NMI's Encrypted Devices capability.

WONWOW integration architecture

  • Merchant application and onboarding workflows
  • Underwriting-status and boarding events
  • Gateway credential and merchant configuration workflows
  • Webhook-driven application and transaction status events
  • Card-present and online payment flows where supported
  • Reporting, settlement and reconciliation integrations
  • API-based merchant and payment operations

Webhooks and event-driven integration

WONWOW uses event-driven integration patterns so merchant onboarding and payment systems can communicate status changes without relying only on manual polling. Exact webhook events, authentication methods and availability depend on the connected provider and merchant program.

SDKs, libraries and sandbox testing

NMI publishes SDK/library and sandbox resources for supported payment integrations. Infinicept publishes API references, webhook guidance and implementation documentation. WONWOW does not publish private credentials, production keys or merchant secrets on this website.

Security and implementation notes

Developer documentation describes integration capabilities; it does not replace the merchant agreement, underwriting requirements, provider terms, card-network rules or applicable security obligations. Merchant-specific production access is provisioned only through the applicable approved environment.

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How does gain-share work?

We agree on how savings will be measured before you move forward. WONWOW earns a share of verified savings under your agreement. Your proposal outlines pricing, scope, and any additional fees.

Does a merchant need to offer a discount?

Merchant offers are one part of the Pass experience. Eligible checkout fee savings may create additional value as those features become available. Participation and benefits vary by merchant.

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Can I keep my current business systems?

We review your existing setup first. Compatibility and implementation requirements depend on your systems and the payment options in your proposal.