• Example searches: “transaction”, “CreateOrder”, “/v2/locations”, “inventory”, “delete customer”

Square API

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Payments

The Payments API lets developers take and manage payments

Applications need the following input to take a payment:

  • Amount to charge.
  • Payment recipient. The payment goes to the account identified by the Authorization header in the API request.
  • Payment source. It can be a secure token (nonce) or a card on file.

You can generate a nonce using the Square Payment Form and the In-App Payments SDK. For working code examples, see Connect API examples.

A card on file refers to a credit/debit or a gift card associated with a customer. You can create a customer and add a card to them using either the Customers API, the dashboard, or the Square mobile app.

Guides: Payments Webhooks

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