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Staff
Merchants
Release notes

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.

A graphic showing the user interface of the API Explorer.

GraphQL Explorer

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

A graphic showing the GraphQL Explorer user interface.

API Explorer

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

A graphic showing the user interface of the API Explorer.

GraphQL Explorer

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

A graphic showing the GraphQL Explorer user interface.

Developer Console

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

A graphic showing the home page of the Developer Console.

Square SDKs

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

php.svg

java.svg

python.svg

node.svg

ruby.svg

dotnet.svg

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Sample applications

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

php.svg

java.svg

python.svg

node.svg

ruby.svg

dotnet.svg

Square SDKs

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

php.svg

java.svg

python.svg

node.svg

ruby.svg

dotnet.svg

go-color

Sample applications

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

php.svg

java.svg

python.svg

node.svg

ruby.svg

dotnet.svg

Developer Console

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

A graphic showing the home page of the Developer Console.

Square SDKs

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

php.svg

java.svg

python.svg

node.svg

ruby.svg

dotnet.svg

go-color

Sample applications

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

php.svg

java.svg

python.svg

node.svg

ruby.svg

dotnet.svg

Square SDKs

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

php.svg

java.svg

python.svg

node.svg

ruby.svg

dotnet.svg

go-color

Sample applications

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

php.svg

java.svg

python.svg

node.svg

ruby.svg

dotnet.svg

Link to section

Community

Stay connected with the Square developer community. Get the scoop on platform updates, ask us a question, drop a comment, or all of the above using the following links.

News

News

Changelog • Blog

Globe
Help
Tutorial

Tutorials

Youtube

News

News

Changelog • Blog

Globe
Help
Tutorial

Tutorials

Youtube