Rest API

[StaciUK]

Ive read that the support for Rest API's is being removed from public Apps will that also apply to private (Develop) applications?

[Ahmad31]

Currently, the removal of REST API support primarily affects public apps. Private (custom) apps are not expected to be impacted at this time, so you can continue using REST APIs. However, it's advisable to consider transitioning to GraphQL APIs in the future.

[Brett_Helium]

Here's some additional information from Shopify's update blog post:

By April 1 2025, all new apps will default to GraphQL. Organizations created after this date will only be permitted to use GraphQL for their custom apps. All new public apps submitted to the App Store after this date must only use GraphQL.

There are no changes for existing apps, which can continue to use the Admin REST API. Migration timelines will be announced in 2025*, and ample time will be provided for the transition. 

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Seems like new apps, even custom/private apps, will be expected to use GraphQL before long. Any existing apps, including custom/private apps, will also probably be expected to move over but on a longer timeframe.