Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 0% and the single project_path parameter has no schema description, so the description must carry the load. 'optional — explicit path to project root' conveys optionality and intent, but leaves unstated what happens when omitted (implicit project discovery), so it only partially compensates.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.