Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has 100% description coverage, with the 'proposal' parameter documented as 'The ATC exemption proposal.' The description adds no additional meaning beyond this, but since schema coverage is high, the baseline score of 3 applies, indicating adequate parameter documentation through the schema alone.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.