Change record status: 
Project: 
Introduced in branch: 
8.x-2.x
Introduced in version: 
8.x-2.0
Description: 

All of the JSON API module's 2xx (successful) responses have a top-level jsonapi member. This contains high-level JSON API implementation metadata: the version (and in the future, extensions/profiles).

There is no reason JSON API 4xx and 500 (error) responses should not also have this metadata. And now they do!

Impacts: 
Site builders, administrators, editors
Module developers
Themers