Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The single 'sector' parameter is fully described in the schema as 'Sector name or sector-ETF symbol.' The tool description only refers to 'a sector's members,' which is consistent but does not add extra syntax or examples beyond the schema. With 100% schema coverage, the description adds little marginal value, so a baseline score of 3 applies.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.