tagResource

The TagResource operation associates tags with an Amazon Managed Service for Prometheus resource. The only resources that can be tagged are rule groups namespaces, scrapers, and workspaces.

If you specify a new tag key for the resource, this tag is appended to the list of tags associated with the resource. If you specify a tag key that is already associated with the resource, the new tag value that you specify replaces the previous value for that tag. To remove a tag, use UntagResource.