Tags:
- Action Required
- Tools
Shopify AI Toolkit for upgrading extensions to Polaris web components
The Shopify AI Toolkit now supports upgrading checkout and customer account UI extensions to new API versions, including the migration to Polaris web components. Use the AI Toolkit with your preferred AI coding agent to skip repetitive manual work and speed up the heavy lifting.
Your agent will leverage the Shopify AI Toolkit, paired with our enhanced developer documentation, to go through the required migration steps such as handling React to Preact conversion, mapping and replacing legacy components with Polaris web components, and updating extension APIs.
Extensions built with Polaris web components render significantly faster than legacy React extensions, ensuring optimal loading time and extension performance.
Required for future app updates after October 1, 2026
Shopify CLI blocks apps from being updated if any of their extensions are on an API version that is more than 1 year old. By October 1, 2026, any app that contains checkout and customer account UI extensions on API versions 2025-07 or earlier will be unable to be updated.
All API versions 2025-10 and later use Polaris web components by default. Upgrade your extensions to the latest API version and adopt Polaris web components now to avoid this restriction.
Get Started
Install the Shopify AI Toolkit and follow our dev docs to run the skill in your AI agent: