Square

Square Checkout API

The Checkout API creates Square-hosted checkout pages for collecting payments. Applications can generate payment links with a simple API call, supporting credit cards, debit cards, Google Pay, Apple Pay, Afterpay, and Cash App.

GitHub OpenAPI

Documentation

📖
Documentation
https://developer.squareup.com/docs/checkout-api
📖
APIReference
https://developer.squareup.com/reference/square/checkout-api

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/square/refs/heads/main/openapi/square-openapi.yml