New Update in 2026- January what will end?

Products and Orders APIs
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1

Hello i am a bit confusing, i use just X-Shopify-Access-Token (shpat_…) with graphql and rest api. I saw that some stuff will end support in 2026 and need to do a public app, that includes only these custom apps or everything will stop and i will need to do oAuth authenticaiton so this mean that i would need to create a public app just for my use? I also inject a JS script into my liquid theme Or i will be able to continue using graphql and rest api using X-Shopify-Access-Token in the header?

will these still work both rest api and graphql??

  1. product api
  2. order api
  3. fulllfilment api
  4. editing layout/theme.liquid (themeFilesUpsert)
2

Hi, If your app was created prior to January 2026, you may continue using your existing access token without interruption. Starting in 2026, all apps (including custom apps) will be required to generate access tokens via the Client Credentials Grant flow (see: Using the client credentials grant).

3

thanks i will do the changes