Hey, currently the way the spec is defined, it makes it difficult to work with automated tooling outside of PHP.

It would be a very nice plus if there was a JSON Schema as it's widely used and there are lots of tools for using it:
Docs: https://json-schema.org/overview/what-is-jsonschema
Tools: https://json-schema.org/tools

I would be happy to help if needed, just let me know. I am really appreciative that there are any docs at all on this.