Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description must fully compensate — and it does. Every one of the 5 parameters gets meaning beyond its schema title: issue_id and comment_id are identified as the required keys, project documents name-or-key flexibility and env-var defaulting (FEISHU_PROJECT_KEY), work_item_type documents default-type behavior, and user_key is mapped to the X-USER-KEY header.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.