no_handler_status_code is nice to set a 404 status instead of 500 when no handler has been defined. However it would be nice if the full default response was customizable.

I test an API where all responses must be JSON, 404 or 500 pages included.
Some URLs I check are built dynamically, so it would not be very convenient to prepare pytest-httpserver for all those URLs. A customizable default response here would be a bliss.

What do you think?