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Dev Essentials
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Docs

Docs Home
Dev Essentials
Payments
Commerce
Customers
Staff
Merchants
Publish
Release notes
Get Started
Create an Account and App
Make your First API Call
View the API Logs
Verify the Payment
What's Next
Overview
Versioning
Access Tokens
Frontend and Backend Development
TLS and HTTPS
Using the REST API
Handling Errors
Collecting Information
Language Preferences
Working with Dates
Working with Monetary Amounts
Working with Addresses
Custom Attributes
Idempotency
Pagination
Optimistic Concurrency
Clear Object Fields
Square eCommerce APIs
Square API Lifecycle
Developer Console
Square Dashboard
Test in Sandbox
Sandbox Payments
API Explorer
API Logs
Webhook Event Logs
Create a Notification URL
Subscribe to Event Notifications
Verify and Validate an Event Notification
Manage Operations
Move Event Notifications to Production
Webhook Events Reference
Troubleshooting
Authentication
Postman
Quickstart
Project Setup
Using the SDK
Common API Patterns
Quickstart
Project Setup
Using the SDK
Common API Patterns
Quickstart
Project Setup
Using the SDK
Common API Patterns
Quickstart
Project Setup
Using the SDK
Common API Patterns
Quickstart
Project Setup
Using the SDK
Common API Patterns
Quickstart
Project Setup
Using the SDK
Common API Patterns
Quickstart
Sample Applications
GraphQL Basics
Build your First Query
GraphQL Explorer
Query Examples
Create Redirect URL and Authorization Page URL
Receive Authorization and Manage OAuth Tokens
Refresh and Revoke OAuth Tokens
Token Introspection
OAuth Best Practices
OAuth Walkthrough
Migrate to the Square API OAuth Flow
Move OAuth to Production
Permissions Reference
Webhook Subscriptions
Events
Deprecated Items
v1 Payments API
v1 Refunds API
Square Transactions API
Migrate Employees to Team Members
Migrate from CreateCheckout to CreatePaymentLink
OAuth and Testing
International Payments
Regional Differences for International Development
Compliance with Japan's Tax Invoice System

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Dev Essentials

Get Started

Create an account and make your first Square API call in minutes.

With the Square Developer platform, you can build custom applications that help Square sellers take payments, create and track orders, manage inventory, organize customers, and more. Get started building with the following steps:

  1. Create an Account and Application
  2. Make your First API Call
  3. View the API Logs
  4. Verify the Payment

These steps introduce the foundational knowledge that you need to work with the Square API, along with some Square developer tools.