Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so the baseline is 3 even without extra parameter detail in the tool description. The description adds little beyond the schema for `url` and does not explain how `host`, `json`, and `zone` relate to the declared URL-citation behavior, leaving their role ambiguous.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.