Official Web API for Grav

Is there any plans for an official web API, http get/post requests, for updating page contents and changing settings?

Or that is left out of the core of Grav and to be done through plug-in!?

There are endless plans, but it's not something that's easily bootstrapped into Core, or into a plugin even. An up-to-date plugin for an API is under development here: https://github.com/Regaez/grav-plugin-api

Thank you so much for sharing this!
I really appreciate it

If a read only/GET API is sufficient, you can easily DIY custom JSON output by making Twig templates for content.

Good to know!
Awesome, thanks