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Dev Essentials
Payments
Commerce
Customers
Staff
Merchants
Release notes

Square API and SDK Documentation

home-hero-image [home-hero-image]

Your toolkit for building custom apps with Square.

Start buildingDeveloper tools
Link to section

API groups

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

icon [icon]

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
icon [icon]

Payments

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

Payment solutions

Terminal API Mobile Payments SDK Web Payments SDK
icon [icon]

Commerce

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

Commerce solutions

Orders API Catalog API Inventory API
icon [icon]

Customers

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

Customer solutions

Customers API Loyalty API Gift Cards API
icon [icon]

Staff

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

Staff solutions

Team API Labor API
icon [icon]

Customers

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

Customer solutions

Customers API Loyalty API Gift Cards API
icon [icon]

Staff

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

Staff solutions

Team API Labor API
Link to section

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. [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. [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. [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. [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. [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 [php.svg]

java.svg [java.svg]

python.svg [python.svg]

node.svg [node.svg]

ruby.svg [ruby.svg]

dotnet.svg [dotnet.svg]

go-color [go-color]

Sample applications

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

php.svg [php.svg]

java.svg [java.svg]

python.svg [python.svg]

node.svg [node.svg]

ruby.svg [ruby.svg]

dotnet.svg [dotnet.svg]

Square SDKs

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

php.svg [php.svg]

java.svg [java.svg]

python.svg [python.svg]

node.svg [node.svg]

ruby.svg [ruby.svg]

dotnet.svg [dotnet.svg]

go-color [go-color]

Sample applications

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

php.svg [php.svg]

java.svg [java.svg]

python.svg [python.svg]

node.svg [node.svg]

ruby.svg [ruby.svg]

dotnet.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. [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 [php.svg]

java.svg [java.svg]

python.svg [python.svg]

node.svg [node.svg]

ruby.svg [ruby.svg]

dotnet.svg [dotnet.svg]

go-color [go-color]

Sample applications

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

php.svg [php.svg]

java.svg [java.svg]

python.svg [python.svg]

node.svg [node.svg]

ruby.svg [ruby.svg]

dotnet.svg [dotnet.svg]

Square SDKs

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

php.svg [php.svg]

java.svg [java.svg]

python.svg [python.svg]

node.svg [node.svg]

ruby.svg [ruby.svg]

dotnet.svg [dotnet.svg]

go-color [go-color]

Sample applications

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

php.svg [php.svg]

java.svg [java.svg]

python.svg [python.svg]

node.svg [node.svg]

ruby.svg [ruby.svg]

dotnet.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]
Help [Help]
News [News]
Help [Help]
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