Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema has one required integer parameter (track_index) with no description. The description adds 'The index of the track,' which provides a basic explanation but leaves ambiguity about indexing base (0 vs. 1), which track types are valid, or whether the index refers to session tracks, return tracks, etc. It helps but is not fully compensating for the 0% schema description coverage.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.