Open, versioned contracts for stories, worlds, characters, and related canon.
Writers write prose. AIs should build the supporting objects — characters, worlds, factions, magic systems — against a spec rather than inventing a new shape for “character” on every run.
A stub is valid. Depth is scored, not demanded.
Additive detail for one medium, living under extensions. A namespace not
listed here is opaque JSON the core validator does not read.