Hi, When you develop an extension-only app that is hosted by Shopify, what is the best way to execute the mutations that create the function instances? Normally I would implement it such that it happens automatically using the token to access to API after the app has been installed in a shop, but …

Thank you for your answer. Ok so I could do an extension-only app with an admin API extension that can create the function instance? So you can define a mutation in the admin API extension, or how does it work? Some function APIs have direct support for associating an Admin UI extension: […

Sounds like you want the token - but the thing is extension only apps cannot be published to the app store, and for private apps, it’s manual anyways. Also, recommended route is to proxy the requests via an endpoint you create in your app and not directly from extension

Hey @Lull For extension only apps I also use the GraphiQL app to run the mutations like cartTransformCreate manually. I’m not aware of a better way to do it.

Currently not all Function APIs are well supported in extension-only apps. The best supported extension-only APIs allow use of Admin API extensions for enabling and configuring functions, but as of writing this only two support them . Alternatives at the moment are to use the GraphiQL app (not the C…

Thank you for your answer. The recommended route you mention is for full apps though right - that is not something you can do in an extension-only app?

Thank you for your answer - if there is no better way, then I’ll let it go :+1:

@NickWesselman Thank you for your answer. Ok so I could do an extension-only app with an admin API extension that can create the function instance? So you can define a mutation in the admin API extension, or how does it work?

@Taksh_Shah Ok it makes sense that it is manual to create the function when it is not possible to have an extension-only app in the app store, thanks.

@NickWesselman Ok super, thank you very much!

@NickWesselman Would be really neat if we could get admin extension targets for the shop settings page. Would be an ideal place for configuring functions that affect a store globally.

Hi Lukeclifton, I tried the same but it says “Function payment-customization not found. Ensure that it is released in the current app (2315872), and that the app is installed.“ and I’m not seeing any option in graphiql app to run the mutation in the context of other app. I’m still doing it on a dev…

The best way to execute mutations for extension-only apps

Functions

Luke December 21, 2025, 9:57pm 15

Check this thread:

Topic		Replies	Views
deliveryCustomizationCreate - function not found Functions delivery-fulfilment	24	641	February 27, 2026
Payment Customization Function activation without app UI or hosting (extension-only app) Functions payment-customisatio	1	58	December 21, 2025
Extension only template - problem with function activation Functions cart-transform	2	72	December 22, 2025
cartTransformCreate Failing for extension only apps Functions cart-transform , general-functions	0	42	April 1, 2026
Can't publish Shopify Function Functions cart-transform	9	253	July 8, 2025

The best way to execute mutations for extension-only apps

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