Why is the Rail Schema written in XML and not JSON?

[CivilEngineerUK]

Hello,
Maybe I am missing something, but guardrails is using an XML schema to specify a JSON output. Why not just specify a JSON schema using JSON which is more readable than XML in general. Obviously there is a reason for guardrails using XML as the input over JSON - perhaps because of the re-prompt handling? Otherwise, what is this reason?
Thanks,
CivilEngineerUK

[zsimjee]

Hi! It's a great question, here's why we have railspecs written out as XML - https://docs.guardrailsai.com/defining_guards/rail/#why-rail.

As far as using XML internally within our execution paths go, that is being swapped out for JSONSchema over the next few weeks.