2026-04-24: Cart Service - cart.updated event on any cart modification

Overview

The Cart Service now emits the cart.updated event whenever a cart is modified. This standardizes event behavior so downstream consumers can reliably react to all cart changes.

Updated endpoints

Endpoint	Description
Updating a cart	Emits cart.updated when cart-level data is changed.
Changing a cart site	Emits cart.updated when the cart site is changed.
Changing a cart currency	Emits cart.updated when the cart currency is changed.
Refreshing a cart	Emits cart.updated when the cart is refreshed.
Merging carts	Emits cart.updated when carts are merged.
Adding a cart item to cart	Emits cart.updated when a new item is added.
Adding multiple cart items to cart	Emits cart.updated when items are added in batch.
Updating a cart item	Emits cart.updated when an item is updated.
Deleting a cart item	Emits cart.updated when an item is removed.
Deleting all items from cart	Emits cart.updated when cart items are cleared.
Applying a discount to cart	Emits cart.updated when a discount is applied.
Removing all discounts from cart	Emits cart.updated when all discounts are removed.
Removing a discount from cart	Emits cart.updated when a single discount is removed.

Known problems

There are no known problems.