Public JSON API's and Documentation

Does anybody know of some public JSON API’s in the wild which have proper documentation?
I would like to use them for inspiration of documenting my own api.

Hello Marcel,

I like to use openapi (fka swagger) to provide webservice documentation.
I made a demo jsonapi implementation that can be found here: http://thomaxxl.pythonanywhere.com/api/

Thanks Thomaxxl,

But I was looking for real-life production public JSON API’s.

Any luck in your searches?

I’ve ended up using https://github.com/lord/slate, but the documentation process is manual and complicated to keep in sync.