Issue: Developers need to find the extension_id (UUID) for theme app extensions to create deep links in Shopify CLI 3.0, but the .env file that previously contained this information in CLI 2.0 is no longer present after the May 2023 sunset.\n\nAttempted Solutions:\n- Running npm run shopify app env show command did not display the UUID or extension ID\n- The shopify env show documentation was referenced but didn’t resolve the issue\n\nWorking Workaround:\nA community member provided a manual method to retrieve the UUID:\n1. Install the app in a dev store\n2. Navigate to theme editor → App embeds menu\n3. Right-click on the extension name and select \
Summarized with AI on November 10.
AI used: claude-sonnet-4-5-20250929.
Hi all,
I am using the theme app extension. but shopify CLI 3.0 there is no any .env file I can find the extension_id
based on that extension_id my deep link working.
I’m not 100% sure if you do need the extension_id for setting up a deep link. Is it possible you are looking for the sectionID (the ID of the section to which the app block should be added) which is mentioned in the deep linking docs here? There’s also more info on Section data in these docs too.
Let me know if this is what you’re looking for, if not we’ll dig into this a bit more!
Hi, if you don’t see an env file in your project, there is one workaround how to get UUID you are looking for. BTW are you sure you connected your project with the Shopify dev account? Anyway…
Install the app in the dev store. Go to the theme editor → select “App embeds” from the left-hand menu → if you have installed the app and extension correctly, your extension should be listed there. Press the right mouse button over the extension name and choose Inspect from the context menu. In the source code, find the phrase “&app_embed_uuid=xxxxx” - this is your UUID. If you have installed more than one app, make sure you copy the proper UUID of your extension.