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Developer demo · API lab · Partner onboarding proof
SmartGen Mastercard MPQR Sandbox Integration & Payment Orchestration Prototype.
SmartGen’s Mastercard Merchant Presented QR sandbox integration sends test payment requests through a protected Cloudflare Worker. The browser never receives the OAuth signing key or provider credentials.
Mastercard sandboxServer-side OAuthTransfer retrievalMobile friendly
Sandbox only: transactions are simulated for development. No real card is charged and no real funds move.
Start Mastercard testing
Open the sandbox lab to create a simulated test transfer and inspect the safe response. Public retrieval is intentionally blocked unless an authenticated internal order is bound to the request.
Open Mastercard MPQR Sandbox →Worker online · Mastercard sandbox ready
1
Enter a test amount
Use sandbox values only. The current test configuration approves amounts above 50 USD.
2
Create a transfer
SmartGen signs the request on the server and returns a Mastercard transfer ID.
3
Keep Production gated
Real fulfillment requires retrieval trust, a durable payment core, and an approved sponsor/acquirer/processor path.
Security note. This prototype uses masked sandbox account fixtures. Never enter a real PAN, CVV, PIN, OTP, or private key into this page.