# Support added for $app in product queries by metafield — Shopify developer changelog
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## Support added for $app in product queries by metafield

We now support querying products by app-owned metafields with a saved namespace using the `$app` syntax. To include an app-owned metafield in your query, you can use the syntax `metafields.$app.key:\"value\"` or `metafields.$app\\:optional-additional-text.key:\"value\"`.

[As documented](https://shopify.dev/docs/api/usage/search-syntax#special-characters), special characters need to be escaped from queries. For this reason, you need a `\\` when specifying `:`. For example, suppose you have an app-owned metafield with the optional-additional-text `swatch-app` and key `color` with a value of `green`. To query for products with this metafield, you would use the following search syntax:
`"metafields.$app\\:swatch-app.color:\"green\""`

Learn more about [querying products by metafield value](https://shopify.dev/docs/apps/build/custom-data/metafields/query-by-metafield-value) and [creating metafields with reserved namespaces](https://shopify.dev/docs/apps/build/custom-data/ownership#create-metafield-definitions-with-reserved-namespaces).

*Published: January 20, 2025*
Tags: API, Update
Link: https://shopify.dev/changelog/support-added-for-app-namespaces-in-product-queries-by-metafield

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