Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the schema provides no parameter descriptions. The description adds no information about the 'session_id' parameter (e.g., what it is, how to obtain it, default behavior if null). However, with only 1 parameter and a default of null, the baseline is 3 as the tool might operate on a current or default session without explicit input.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.