Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description needed to compensate for the single parameter, document_id. It does not describe what the document ID represents, how to obtain it, or any format expectations. The parameter name and title provide some self-evident meaning, but the description adds nothing beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.