Tags-only service query

Can we query service by tags only?

I understand “service-name” + “tags” returns qualified services, but it feels like “service-name” is just another dimension that gets evaluated before other tags, and user needs to make conscious decision on what to use for “service-name”. Can we avoid this decision by querying tags only? if not, what are the guidelines picking service-name? thanks

somehow relevant, can prepared_query take tags as parameter, similar to database
stored procedure? thx