Create checkout

A unique string that identifies this checkout among others you have created. It can be any valid string but must be unique for every order sent to Square Checkout for a given location ID.

The idempotency key is used to avoid processing the same order more than once. If you are unsure whether a particular checkout was created successfully, you can attempt it again with the same idempotency key and all the same other parameters without worrying about creating duplicates.

You should use a random number/string generator native to the language you are working in to generate strings for your idempotency keys.

For more information, see Idempotency.

The order including line items to be checked out.

If true, Square Checkout collects shipping information on your behalf and stores that information with the transaction information in the Square Seller Dashboard.

Default: false.

The email address to display on the Square Checkout confirmation page and confirmation email that the buyer can use to contact the seller.

If this value is not set, the confirmation page and email display the primary email address associated with the seller's Square account.

Default: none; only exists if explicitly set.

If provided, the buyer's email is prepopulated on the checkout page as an editable text field.

Default: none; only exists if explicitly set.

If provided, the buyer's shipping information is prepopulated on the checkout page as editable text fields.

Default: none; only exists if explicitly set.

The URL to redirect to after the checkout is completed with checkoutId, transactionId, and referenceId appended as URL parameters. For example, if the provided redirect URL is http://www.example.com/order-complete, a successful transaction redirects the customer to:

http://www.example.com/order-complete?checkoutId=xxxxxx&referenceId=xxxxxx&transactionId=xxxxxx

If you do not provide a redirect URL, Square Checkout displays an order confirmation page on your behalf; however, it is strongly recommended that you provide a redirect URL so you can verify the transaction results and finalize the order through your existing/normal confirmation workflow.

Default: none; only exists if explicitly set.

The basic primitive of a multi-party transaction. The value is optional. The transaction facilitated by you can be split from here.

If you provide this value, the amount_money value in your additional_recipients field cannot be more than 90% of the total_money calculated by Square for your order. The location_id must be a valid seller location where the checkout is occurring.

This field requires PAYMENTS_WRITE_ADDITIONAL_RECIPIENTS OAuth permission.

This field is currently not supported in the Square Sandbox.

The newly created checkout object associated with the provided idempotency key.