Test cards (sandbox)

Use Mainmoney sandbox test cards at checkout. Card numbers are curated for your integration and may include success, decline, and 3-D Secure scenarios.

Live list

Call GET /developers/v1/sandbox/testing-guide (sandbox apps only) or open the Testing page in the developer dashboard for the current card numbers assigned to your app.

Typical outcomes

Outcome	Use case
Success	Happy-path checkout and webhook delivery
Declined	Failed payment handling and retry UX
3-D Secure	Strong customer authentication flows when enabled

Sandbox card payments do not credit your business wallet. Completed payments still trigger developer webhooks.