Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The description adds operational meaning for the key FRED parameters — observation_start/observation_end to bound the range and frequency to aggregate (with 'm'/'q' examples) — which the top-level schema does not surface. It does not address the boilerplate-looking params (source_resource_id, wholesaler_ids, exclude_fillers), though those appear unrelated to FRED fetching.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.