How to verify if a Checkout UI Extension is active on a merchant’s Thank You page?

I’ve built a Checkout UI Extension targeting purchase.thank-you.block.render and deployed it through a custom Shopify app.

From my app/backend, I need to verify whether this extension is actually installed and active on the merchant’s Thank You page.

  • Is there any Shopify API that can confirm if a Checkout UI Extension (for example, purchase.thank-you.block.rende) is it added to the merchant’s store?

  • If not, what alternative approaches can I use to check whether the extension is properly embedded on the Thank You page?

You can look into using the new App Bridge App API which exposes extension status for the Customer Account & Checkout UI extensions - App.