Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description must carry parameter meaning. It usefully maps 'path fragment' to pattern and 'extension' to extensions, but it does not explain pattern matching syntax, whether extensions need leading dots, or any semantics for path/limit beyond what the schema defaults already convey.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.