generated: '2026-06-20'
method: searched
source: https://github.com/shift4developer + https://docs.shift4.com/sdks
notes: >-
  Shift4 ships two first-party SDK families. (1) The registry-published
  "Shift4 for Developers" e-commerce SDKs live in the github.com/shift4developer
  org and are distributed on npm/PyPI/Packagist/RubyGems/Maven/NuGet — these
  target the dev.shift4.com Stripe-style API (api.shift4.com). (2) The Payment
  Platform / Gateway REST API (docs.shift4.com, api.shift4api.net — the surface
  profiled in apis.yml) ships downloadable component libraries (S4/.Net, S4/Java,
  S4/Apple) as versioned ZIPs from the docs site rather than public registries.
github_org: https://github.com/shift4developer
packages:
  # --- Registry-published first-party SDKs (github.com/shift4developer) ---
  - language: javascript
    registry: npm
    name: shift4
    url: https://www.npmjs.com/package/shift4
    repository: https://github.com/shift4developer/shift4-node
    install: npm install shift4
    official: true
    api_surface: dev.shift4.com (e-commerce)
  - language: python
    registry: pypi
    name: shift4
    url: https://pypi.org/project/shift4/
    repository: https://github.com/shift4developer/shift4-python
    install: pip install shift4
    official: true
    api_surface: dev.shift4.com (e-commerce)
  - language: php
    registry: packagist
    name: shift4/shift4-php
    url: https://packagist.org/packages/shift4/shift4-php
    repository: https://github.com/shift4developer/shift4-php
    install: composer require shift4/shift4-php
    official: true
    api_surface: dev.shift4.com (e-commerce)
  - language: ruby
    registry: rubygems
    name: shift4
    repository: https://github.com/shift4developer/shift4-ruby
    install: gem install shift4
    official: true
    api_surface: dev.shift4.com (e-commerce)
  - language: java
    registry: maven
    name: shift4
    repository: https://github.com/shift4developer/shift4-java
    official: true
    api_surface: dev.shift4.com (e-commerce)
  - language: csharp
    registry: nuget
    name: Shift4
    repository: https://github.com/shift4developer/shift4-net
    official: true
    api_surface: dev.shift4.com (e-commerce)
  - language: swift
    registry: github
    name: shift4-ios
    repository: https://github.com/shift4developer/shift4-ios
    official: true
    api_surface: dev.shift4.com (e-commerce, mobile)
  - language: kotlin
    registry: github
    name: shift4-android
    repository: https://github.com/shift4developer/shift4-android
    official: true
    api_surface: dev.shift4.com (e-commerce, mobile)
  - language: javascript
    registry: vendor
    name: Shift4.js
    url: https://dev.shift4.com/docs/js/
    install: <script src="https://js.dev.shift4.com/shift4.js"></script>
    official: true
    kind: client-side tokenization component
    api_surface: dev.shift4.com (e-commerce)
  # --- E-commerce platform plugins (first-party) ---
  - language: php
    registry: github
    name: shift4-woocommerce
    repository: https://github.com/shift4developer/shift4-woocommerce
    official: true
    kind: WooCommerce plugin
  - language: javascript
    registry: github
    name: shift4-salesforce-b2c
    repository: https://github.com/shift4developer/shift4-salesforce-b2c
    official: true
    kind: Salesforce B2C Commerce cartridge
  # --- Payment Platform / Gateway REST API component SDKs (docs.shift4.com) ---
  - language: csharp
    registry: vendor
    name: S4/.Net (S4RestAPI.dll)
    url: https://docs.shift4.com/sdks/dotnet
    version: 1.0.0
    official: true
    requires: .NET Framework 6.0+ (Windows)
    api_surface: api.shift4api.net (Payment Platform REST)
  - language: java
    registry: vendor
    name: S4/Java (S4RestAPI.jar)
    url: https://docs.shift4.com/sdks/java
    version: 1.0.1
    official: true
    requires: Java 1.8+ (Windows/Linux/Android)
    api_surface: api.shift4api.net (Payment Platform REST)
  - language: swift
    registry: vendor
    name: S4/Apple (AppleSDK)
    url: https://docs.shift4.com/sdks/ios
    version: '2.0'
    official: true
    requires: iOS 15.6+ / macOS 11.5+ (WiFi or BLE via Commerce Engine)
    api_surface: api.shift4api.net (Payment Platform REST)