kwalify(1) on Linux
The text 342ecfcdb17c, as Debian 10 (Buster), Debian 9 (Stretch) shipped it.
Tiny schema validator for YAML and JSON
Flags it lists
-
--help -
-E -
-a -
-f -
-h -
-ha -
-l -
-m -
-s -
-t -
-v