Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, so the baseline is 3, but the description adds meaningful usage guidance for all four parameters: place id, a sentence or two for the message, the official page if available, and an optional contact. It mostly reinforces the schema rather than adding deep parameter-specific semantics.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.