Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema already provides 100% parameter coverage with rich descriptions, including the file id/url/text union, environment pinned via get_me, workspace grants, and maxItems. The description adds little beyond the existing schema details, so the baseline of 3 applies.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.