[theK]

> Json as a common language for human in visualization has been around for a while

Plant, Mermaid, Graphviz are all declarative textual representations designed for human authoring, JSON is made for tools. Its not a criticism just a statement that if interop across agent and human was intended this is not the simplest option.

[chenglong-hn]

right, in fact many small models still struggle with following json, some new forms are also needed