Square SDK and Mobile Samples

OAuth samples

PHP     Ruby     Python     Node.js     Java

Square SDK samples

• Web Payments SDK and Payments API (payment processing samples)
  PHP     Ruby     Python     Node.js     Java     .NET

• Checkout API
  PHP     .NET

• Orders API (order-ahead sample)
  Node.js

• Catalog API (product management samples)
  Java

• Invoices API
  Node.js

• Subscriptions API
  Node.js

• Loyalty API (included in the order-ahead sample)
  Node.js

• Snippets API
  Ruby

• Connect v1 samples
  PHP     Ruby     Python     Java

Mobile samples

• Reader SDK
  Android     iOS     Flutter     React Native

• Point of Sale API: Android
  Bikeshop sample     Hello Charge    

• Point of Sale API: iOS
  Hello Charge - Swift     Hello Charge - Objective C     The Coffee Shop - Swift

• In-App Payments SDK
  Android     iOS     Flutter