Square API and SDK Documentation

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Your toolkit for building custom apps with Square.

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API groups

Square APIs work together like building blocks for any business solution.

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Payments

Process payments on Square hardware or online using any Internet-connected device.

Payment solutions

Terminal API Mobile Payments SDK Web Payments SDK

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Commerce

Build eCommerce applications to help sellers manage key aspects of their business.

Commerce solutions

Orders API Catalog API Inventory API

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Payments

Process payments on Square hardware or online using any Internet-connected device.

Payment solutions

Terminal API Mobile Payments SDK Web Payments SDK

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Commerce

Build eCommerce applications to help sellers manage key aspects of their business.

Commerce solutions

Orders API Catalog API Inventory API

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Customers

Manage customer data securely and keep customers coming back with engagement programs.

Customer solutions

Customers API Loyalty API Gift Cards API

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Staff

Enable team management with scheduling, timecards, and payroll support.

Staff solutions

Team API Labor API

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Customers

Manage customer data securely and keep customers coming back with engagement programs.

Customer solutions

Customers API Loyalty API Gift Cards API

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Staff

Enable team management with scheduling, timecards, and payroll support.

Staff solutions

Team API Labor API

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Development tools

Get up and running faster with development tools, SDKs, and sample apps.

API Explorer

Easily test and examine endpoint behaviors by making requests to Square APIs.

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GraphQL Explorer

Write and send GraphQL queries using optional sample queries and embedded schema docs.

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API Explorer

Easily test and examine endpoint behaviors by making requests to Square APIs.

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GraphQL Explorer

Write and send GraphQL queries using optional sample queries and embedded schema docs.

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Developer Console

Access and manage your application settings, such as IDs, versions, and webhook event subscriptions.

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Square SDKs

Create a Square integration in PHP, Java, Python, Node.js, Ruby, .NET, and Go.

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Sample applications

See Square APIs in action by downloading samples for OAuth, Square SDKs, GraphQL, and mobile.

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Square SDKs

Create a Square integration in PHP, Java, Python, Node.js, Ruby, .NET, and Go.

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Sample applications

See Square APIs in action by downloading samples for OAuth, Square SDKs, GraphQL, and mobile.

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Developer Console

Access and manage your application settings, such as IDs, versions, and webhook event subscriptions.

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Docs

Square API and SDK Documentation

API groups

Payments

Commerce

Payments

Commerce

Customers

Staff

Customers

Staff

Development tools

API Explorer

GraphQL Explorer

API Explorer

GraphQL Explorer

Developer Console

Square SDKs

Sample applications

Square SDKs

Sample applications

Developer Console