Sandbox Testing

Test the Guest checkout debit card flow in our sandbox!

Sandbox testing is currently only available for Guest checkout flow. Switch to production to test out the authenticated Coinbase user flows.

Instructions

On the payment method page, you can use the following values when filling out the form (do not use real phone numbers or card numbers):

Field	Input value
Phone number	Any valid US 10-digit phone number e.g. (212) 123-1234. Note: you will not receive a text message if you use a real phone number.
Email	Any valid email string e.g. john.doe@gmail.com
Name on card	Any first and last name e.g. John Doe
Card number	4242 4242 4242 4242 to simulate a successful transaction. Any other 16-digit card number to simulate a declined transaction.
Expiry date	Any valid expiry date e.g. 12/31
CVC	Any 3-digit CVC e.g. 123
Billing address	Any valid US address (you can start typing for suggestions). e.g. 123 Market Street, San Francisco, CA 94105

After completing the payment method page, you will see the phone verification page. You can input any 6-digit code here (e.g. 000000).

You can test different Onramp configurations by modifying the query parameters in the sandbox URL. Session tokens are required.

https://pay-sandbox.coinbase.com/?sessionToken=<token>&<other params>

Parameter	Required	Type	Description
`sessionToken`	Yes	String	Token generated by the Onramp Session Token API.
`assets`	No	String[]	List of assets that will be available for the user to buy/send. e.g. [“ETH”, “USDC”] or UUIDs retrieved from the Buy Options API. This optional parameter acts as a filter on the addresses parameter. If it is included then only the assets in this list that are available on one of the supported blockchains in the Addresses list will be available to the user. See the See the Buy Options API for the full list of assets.
`defaultNetwork`	No	String	Default network that should be selected when multiple networks are present
`defaultAsset`	No	String	Default asset that should be selected when multiple assets are present
`presetCryptoAmount`	No	Number	Preset crypto amount value
`presetFiatAmount`	No	Number	Preset fiat amount value (for USD only in sandbox). Ignored if `presetCryptoAmount` is also set.