TOML

TOML (Tom's Obvious, Minimal Language) is a small configuration format built around unambiguous types. A date literal is a date, a quoted string is a string, and the same file parses identically in every language that supports the spec. That is why Rust's Cargo, Python's pyproject.toml and Hugo all settled on it. On an AI-readability site its job is narrower than it first looks: it is the shape to hand your own tooling when page metadata has to be read without guessing, not a format an answer engine asks for.