Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema only defines site_url with no description, so schema coverage is 0%. The description compensates fully by providing exact match requirements, concrete examples (https://example.com, sc-domain:example.com), and clarifying the format for domain properties, adding essential meaning beyond the bare schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.