Square APIs and SDKs

Web Payments SDK

App Marketplace Requirements

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Square APIs and SDKs

2026-05-20 Changelog

Square

Documentation

Payments API

Refunds API

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Version summary

Square Version: 2026-05-20
Java: 46.1.0.20260520
.NET: 44.0.0
Node.js: 44.1.0
PHP: 45.1.0.20260520
Python: 44.1.0.20260520
Ruby: 45.1.0.20260520
Go: v3.1.0

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Details

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API updates

Payments API

Payment object: New app_fee_allocations field used to distribute an application fee to up to 3 parties in a single transaction. For more information, see Distribute fees to multiple parties.
CardPaymentDetails object: New wallet_type field used for Apple Pay payments.
New ElectronicMoneyDetails object representing details about E-money payments in Japan. Use this field to view felica_details for FeliCa payments.

Refunds API

PaymentRefund objects: When refunding a payment that used fee allocations, specify app_fee_allocations to control how much each party contributes to the refund. For more information, see Refund payments with fee allocations.

Learn about versioning for the Square API and SDKs.