---
title: UI API
description: The UI API lets you display brief, non-disruptive notification messages to customers using toast notifications. Use this API to confirm successful actions, report errors, or surface contextual feedback without interrupting the customer workflow.
api_version: 2026-04
source_url:
  html: https://shopify.dev/docs/api/customer-account-ui-extensions/latest/target-apis/platform-apis/ui-api
  md: https://shopify.dev/docs/api/customer-account-ui-extensions/latest/target-apis/platform-apis/ui-api.md
---

UI API

Not supported in this version.