Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The description adds substantial meaning beyond the input schema, which has 0% description coverage. It explains that 'stops' are 'List of locations (plain text, stop numbers, or formatted keys)', clarifies that 'optimize' uses 'TSP' and starts from the first stop, and notes that 'date' and 'time' are optional with format examples. This compensates well for the schema's lack of descriptions, though it could be more detailed on parameter interactions.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.