Available Extensions

This page lists all the extensions that are available for Salesforce Commerce. New extensions are added as they become available.

To create an extension provider, you must know which base Apex class to extend and the extension point name for mapping. Both the the base Apex class name and extension point name are listed for each extension.

This page lists two types of extensions: domain and endpoint.

Domain extensions extend functional domains, such as cart calculation. In contrast, endpoint extensions extend selected Connect API endpoints.

The extension listed in this section is used for Buyer Group.

Dynamically assign users to buyer groups by executing custom Apex business logic.

• Base Apex class: CommerceBuyGrp.BuyerGroupEvaluationService
• Extension point name: Commerce_Domain_BuyerGroup_EvaluationService
• Namespace: CommerceBuyGrp. See Buyer Group Reference.

The extensions listed in this section are all functionally related, and they all support cart calculations, including cart calculations that occur during checkout. These extensions comprise the Cart Calculate API.

Orchestrates multiple calculators to summarize the total cost in a cart. See Orchestrators and Calculators.

Each calculator is a separate extension that you can customize separately.

• Base Apex class: CartExtension.CartCalculate
• Extension point name: Commerce_Domain_Cart_Calculate
• Namespace: CartExtension. See Cart Reference.

CartCalculate currently supports the following set of cart and checkout operations:

• AddItemToCart
• EditCartItem
• DeleteCartItem
• AddCoupon
• DeleteCoupon
• StartCheckout
• PatchCheckout (address, set delivery method)

Calculates inventory for cart and checkout based on the inventory service.

• Base Apex class: CartExtension.InventoryCartCalculator
• Extension point name: Commerce_Domain_Inventory_CartCalculator
• Namespace: CartExtension. See Cart Reference.

Reserves and tracks available inventory. By default, this extension uses the Omnichannel Inventory (OCI) system for inventory data.

• Base Apex class: commerce_inventory.CommerceInventoryService
• Extension point name: Commerce_Domain_Inventory_Service
• Namespace: commerce_inventory. See Inventory Reference.

Calculates pricing for cart and checkout based on the pricing service.

• Base Apex class: CartExtension.PricingCartCalculator
• Extension point name: Commerce_Domain_Pricing_CartCalculator
• Namespace: CartExtension. See Cart Reference.

Tracks how products and services are priced. By default, this extension uses Salesforce price books for pricing data. If your store uses Faster Add-to-Cart, make sure that all products have an entry in a store price book before implementing the pricing service extension.

• Base Apex class: commercestorepricing.PricingService
• Extension point name: Commerce_Domain_Pricing_Service
• Namespace: commercestorepricing. See Pricing Reference.

Calculates promotions for cart and checkout. By default, this extension uses the Salesforce promotions service to perform its calculations.

• Base Apex class: CartExtension.PromotionsCartCalculator
• Extension point name: Commerce_Domain_Promotions_CartCalculator
• Namespace: CartExtension. See Cart Reference.

Calculates shipping costs. By default, there’s no charge for shipping, so you must extend the base Apex class to see any effect.

• Base Apex class: CartExtension.ShippingCartCalculator
• Extension point name: Commerce_Domain_Shipping_CartCalculator
• Namespace: CartExtension. See Cart Reference.

Calculates taxes for cart and checkout. By default, this extension uses the Salesforce tax service to perform its calculations.

• Base Apex class: CartExtension.TaxCartCalculator
• Extension point name: Commerce_Domain_Tax_CartCalculator
• Namespace: CartExtension. See Cart Reference.

Applies taxes to products in the cart.

• Base Apex class: commercestoretax.TaxService
• Extension point name: Commerce_Domain_Tax_Service
• Namespace: commercestoretax. See Tax Reference.

The extensions listed in this section are used for checkout but don’t affect cart calculations, so they aren’t part of the Cart Calculate API.

During checkout, this extension creates an order using information from the cart.

• Base Apex class: CartExtension.CheckoutCreateOrder
• Extension point name: Commerce_Domain_Checkout_CreateOrder
• Namespace: CartExtension. See Cart Reference.

During checkout, when a buyer places an order, this extension runs cart validations as part of the Place Order Action API. To implement custom validation logic, extend the base Apex class and override the validate method.

• Base Apex class: CartExtension.CheckoutPlaceOrder
• Extension point name: Commerce_Domain_Checkout_PlaceOrder
• Namespace: CartExtension. See Cart Reference.

During checkout, this extension arranges cart items across delivery groups. To implement custom Item Arrangement logic, extend the base Apex class and override the arrangeItems method.

• Base Apex class: CartExtension.SplitShipmentService
• Extension point name: Commerce_Domain_Shipping_SplitShipment
• Namespace: CartExtension. See Cart Reference.

The extension listed in this section is used for Order Management.

Expands product information by adding return reasons.

• Base Apex class: commerce_ordermanagement.ProductExpandService
• Extension point name: Commerce_Domain_OrderManagement_Product
• Namespace: commerce_ordermanagement. See commerce_ordermanagement.

Extends selected Connect API endpoints, allowing you to modify the endpoints request payload before the endpoint is called, or to modify the response after the endpoint is called, or both.

Unlike domain extensions, endpoint extensions extend the same base class.

• Base Apex class: connectapi.BaseEndpointExtension

• Namespace: connectapi. See connectapi.

• Extension point name: Commerce_Endpoint_Account_Addresses – extends the Commerce Webstore Account Addresses endpoint.
• Extension point name: Commerce_Endpoint_Account_Address – extends the Commerce Webstore Account Address endpoint.

• Extension point name: Commerce_Endpoint_Catalog_Products – extends the Commerce Webstore Products endpoint.
• Extension point name: Commerce_Endpoint_Catalog_Product – extends the Commerce Webstore Product endpoint.

• Extension point name: Commerce_Endpoint_Cart_Item – extends the Commerce Webstore Cart Item endpoint. Available in version 62.0 and later.
• Extension point name: Commerce_Endpoint_Cart_ItemCollection – extends the Commerce Webstore Cart Items endpoint. Available in version 62.0 and later.

• Extension point name: Commerce_Endpoint_Search_Products – extends the Commerce Webstore Search Products endpoint.
• Extension point name: Commerce_Endpoint_Search_ProductSearch – extends the Commerce Webstore Product Search endpoint.

• Extension point name: Commerce_Endpoint_Search_Suggestions – extends the Commerce Webstore Product Search Suggestions endpoint. Available in version 67.0 and later.

See Also

• B2B Commerce Developer Guide: Register and Map Extension Class
• B2B Commerce Developer Guide: Extension Provider Examples

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Get Started with B2B Commerce

B2B Commerce Data Model

B2B Data Deployment

Implementation Lifecycle: Personas

B2B Commerce APIs

B2B Commerce Headless Storefront Implementation Overview

B2B Commerce Extensions

Get Started

Cart Calculate API

Available Extensions

Extension Provider Examples

Mock the Base Apex Class

Write Tests for an Extension Provider

Integrations

Set Up Payment Processing

Cart and Checkout Features

Commerce SFDX Environment Setup

Build Custom Components

Implement Custom Self-Registration for a B2B Store

Headless Guest Support for Cart and Checkout APIs Using JWT

Commerce LWR Storefront Performance Best Practices

Image Optimization Best Practices

Custom Rules for Product Readiness