Hey @abad , I've built a few apps to do similar things with other APIs but I haven't tried with Shopify's GraphQL API yet. It does look possible though, based on their API docs.GraphQL itself has a bit of a learning curve, but this should be easy for...

I don't think the REST API supports bulk inventory updates, but the GraphQL API does:https://shopify.dev/api/admin-graphql/2022-01/mutations/inventoryBulkAdjustQuantityAtLocation Bulk inventory updates can also be done with a CSV import:https://help....

Thank you for posting the solution! I just had the same problem and this solved it for me as well. 

I could really use this feature as well, and just learned that it's not possible. I did find a workaround though.  You can filter records via the REST API using the parameter query='string', which searches most (all?) fields at once, including tags. ...