API: how to handle tags that don’t exist yet

I am trying to create a test case via the API with a tag that does not yet exist in the project, and of course, I get an error. So I thought I should make a separate call to create the tag first, and then use its name and ID when creating the test case, but I can’t find any endpoint for tag creation.

Are there any workarounds that would let me avoid adding the tag to the project manually? Thanks.