OKF
The Open Knowledge Format, whose v0.1 schema ships with manni meta and anchors its built-in default set.
The schema’s id is google:okf:0.1. OKF requires only type and treats every
other field (title, description, resource, tags, timestamp) as
recommended, tolerating unknown keys. When nothing else is configured, it
validates your files first in the default set, ahead of
passo-uno:seven-action:1.0 and nine manni vocabularies. See
the built-in OKF schema.