What is the feature you are proposing?

Certain frameworks (eg: fastify) provide response validation for success or error payloads.
Is there support for such feature in hono? If not, is it something planned?

Context

Apart from obvious advantages like schema-first approach, this feature would greatly help securing API internals.
For example, when you have multiple unique IDs for DB records and you want to make sure that only external_id IDs are ever returned without accidentally leaking internal_id IDs.