👋🙃. @andyg All header lenses are bidi by default. Can you post a gist of what you're having trouble with

ok I have a BiDiBodyLens like:

val myBodyLens : BiDiBodyLens<MyObjectType> = Body.auto<MyObjectType>().toLens()

Aha ok: it's not something we've really thought about, but I suppose you could write something generic by following the pattern from body.auto (which sets the content type and the body content). I might also have a play and see if I can come up with something:

I wasn't aware that body.auto sets the content type... to application/json I assume? I don't see that in the docs, I even read

Q. Where is the Body.auto method defined?

and still can't find the code.

You can certainly suggest it. And even better, the page is here for a PR to add. 😉 https://github.com/http4k/http4k/blob/master/src/docs/guide/modules/json/index.md

Done! Happy to contribute in a (very) small way. Feel free to edit my code example.

Thanks! Will take a look this morning. 🙃