How to get (JSON) Schema from Lists

[rbcb-dev]

Is there a way, how i could get the Schema of a List Object ?

Best would be to get a JSON Schema, where it describes the name of the entity and the fields with their types.
Or is my only option, to take the generated graphql schema ?

What i want to achieve :
Take the entity schemas and use them as an input for code generation with templates from mustache/handlebars