How to update product category/taxonomy while listing the product using rest api (unstable version)

Retired Boards Appdev Custom Storefronts
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Topic summary

A developer is attempting to update Shopify product categories using the unstable REST API but cannot identify the correct parameter.

Current situation:

  • The developer can successfully update product_type but not the product category/taxonomy
  • An image was shared showing their attempted approach
  • They’re specifically looking for which key/field to use in the REST API endpoint

Proposed solution:

  • Another user suggests this functionality may only be available through the GraphQL Admin API instead of REST
  • They reference the productUpdate mutation with the product.category field as the appropriate method

Status: The discussion remains open with a potential workaround suggested (switching from REST to GraphQL API).

Summarized with AI on November 14. AI used: claude-sonnet-4-5-20250929.
2

Hey @developerCFC ,

I think this is only achievable through the GraphQL Admin API: https://shopify.dev/docs/api/admin-graphql/unstable/mutations/productUpdate#field-productinput-productcategory