Momen Payment API

Sandbox Simulator

Simulate paid, failed, or expired outcomes with only a payment code — no API key.

Sandbox Simulator

Drive a sandbox payment link to a chosen outcome without an API key. Paste the payment code from the checkout URL (the same capability token a payer sees), pick an outcome, and simulate.

No money moves. Matching webhooks are delivered the same way as production.

Never use real credentials or real money here. This tool only talks to the sandbox gateway.

Sandbox simulator

stggateway-sandbox.momen.co

Paste the checkout URL or just the code from the path.

Outcome

Settles the link and fires payment_link.succeeded

What each outcome does

OutcomeLink statusWebhook
PaidSettles to succeededpayment_link.succeeded
FailedStays pendingNone
ExpiredMoves to expiredpayment_link.expired

Payment method is recorded on paid/failed attempts only (defaults to VA BRI if you leave the default).

Prefer the API instead?

If you already have a sk_test_ key and the payment link UUID, use POST /sandbox/simulate from your backend or the API reference try-it console.

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