As a user I'd like to search /api/smart_class_parameters/ for puppet class name and parameter name so I don't have to iterate all values.

$ curl -u user -k https://foreman.example.org/api/smart_class_parameters/?search=parameter%3Dapache_name
Enter host password for user 'api':
{
  "error": {"message":"Field 'parameter' not recognized for searching!","class":"ScopedSearch::QueryNotSupported"}
}