---
title: Support added for app-owned metafields - Shopify developer changelog
description: Shopify’s developer changelog documents all changes to Shopify’s platform. Find the latest news and learn about new platform opportunities.
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  html: https://shopify.dev/changelog/support-added-for-app-owned-metafields-in-checkout-ui-extension-api
  md: https://shopify.dev/changelog/support-added-for-app-owned-metafields-in-checkout-ui-extension-api.md
---

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March 7, 2025

Tags:

* Customer Accounts
* 2025-04

# Support added for app-owned metafields

In the `2025-04` API versions of Checkout and Customer Account UI extension APIs, we've enhanced the `appMetafield` API to support reading app owned metafields. These metafields give you greater control over your application's data, as your app manages both the data and its visibility.

To read app-owned metafields, you must request them in your extension configuration `toml` file using the `$app` format in the namespace. This configuration makes app-owned metafields accessible through the `appMetafield` API in your UI extension code. Note that while you can read these metafields, writing to them is not permitted.

Currently, app-owned metafields are available in the `unstable` version and will be included in stable versions starting from `2025-04`.

For more details, please refer to the metafield configuration guide for the [Checkout UI extensions API](https://shopify.dev/docs/api/checkout-ui-extensions/unstable/apis/metafields) or the [Customer Account UI extensions API](https://shopify.dev/docs/api/customer-account-ui-extensions/unstable/configuration#metafields).