---
title: useOptimisticCart
description: The useOptimisticCart takes an existing cart object, processes all pending cart actions, and locally mutates the cart with optimistic state.
api_version: 2026-10
source_url:
  html: https://shopify.dev/docs/api/hydrogen/latest/hooks/useoptimisticcart
  md: https://shopify.dev/docs/api/hydrogen/latest/hooks/useoptimisticcart.md
---

use​Optimistic​Cart

Not supported in this version.