Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
With 0% schema description coverage, the description lists all parameters and gives examples (state codes, chamber values, party codes). However, it doesn't explain nuances like whether chamber expects exact case, whether congress number requires specific format, or how district is interpreted without state (whether it implies state requirement). The baseline is 3 since schema covers all parameters, but the description adds minimal semantic value beyond the property names.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.