This page lists the test cards and nonces you can use to validate card payments in Meld’s sandbox. It is for developers integrating card payments who need to confirm a transaction flows end-to-end before going live.

Prerequisites

A sandbox API key from your Meld dashboard.
At least one card-capable service provider enabled on your account — see Supported Service Providers.

Create a payment using the nonce method

When creating a payment using the nonce method, only the payment method token is required. You can use meld-fake-valid-nonce for all service providers besides Checkout, or use each service provider’s supported nonces listed on their websites. This nonce is provided by Meld for testing. To create a nonce in production, use a nonce generator provided by the service provider.

See Supported Service Providers for which providers support the nonce method.

Create a payment using the card method

Genuine card information cannot be used in test mode. Use the test card numbers below with a valid future expiration date and any random CVC to create a successful payment.

To trigger specific decline scenarios (insufficient funds, expired card, fraud, etc.), refer to the additional test card numbers available in your Meld sandbox dashboard or the relevant service provider’s testing documentation.

Braintree

U.S. test cards

Note: Braintree does not support credit cards, but you can use the cards below to create nonces with which to test.

Card number	Brand	CVC	Expiration date
37144963539843	American Express	Any 3 digits	Any future date
5555 5555 5555 4444	Mastercard	Any 3 digits	Any future date
4111111111111111	Visa	Any 3 digits	Any future date

Square

U.S. test cards

Note: Square does not support credit cards, but you can use the cards below to create nonces with which to test.

Card number	Brand	CVC	Expiration date
4111111111111111	Visa	111	Any future date
5105105105105100	Mastercard	111	Any future date
6011000000000004	Discover	111	Any future date
30000000000004	Diners Club	111	Any future date
3569990010095841	JCB	111	Any future date
340000000000009	American Express	1111	Any future date
7783320000000000	Square Gift Card	N/A	N/A

International test cards

You can use any of the following test cards to simulate a successful payment for different billing countries.

Card number	Brand	CVC	Expiration date	Country
6222988812340000	China UnionPay	123	Any future date	China (CN)

Stripe

U.S. test cards

Card number	Brand	CVC	Expiration date
4242424242424242	Visa	Any 3 digits	Any future date
4000056655665556	Visa (debit)	Any 3 digits	Any future date
5555555555554444	Mastercard	Any 3 digits	Any future date
2223003122003222	Mastercard (2-series)	Any 3 digits	Any future date
5200828282828210	Mastercard (debit)	Any 3 digits	Any future date
5105105105105100	Mastercard (prepaid)	Any 3 digits	Any future date

International test cards

You can use any of the following test cards to simulate a successful payment for different billing countries.

Card number	Brand	CVC	Expiration date	Country
4000001240000000	Visa	Any 3 digits	Any future date	Canada (CA)
4000004840008001	Visa	Any 3 digits	Any future date	Mexico (MX)

See Supported Service Providers for which providers support the card method.

Welcome

AI Toolkit

Meld API

Stablecoins & Digital Assets

Bank Linking

Card Testing Guide

Prerequisites

Create a payment using the nonce method

Create a payment using the card method

Braintree

U.S. test cards

Square

U.S. test cards

International test cards

Stripe

U.S. test cards

International test cards

​Prerequisites

​Create a payment using the nonce method

​Create a payment using the card method

​Braintree

​U.S. test cards

​Square

​U.S. test cards

​International test cards

​Stripe

​U.S. test cards

​International test cards

Prerequisites

Create a payment using the nonce method

Create a payment using the card method

Braintree

U.S. test cards

Square

U.S. test cards

International test cards

Stripe

U.S. test cards

International test cards