Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full behavioral burden, and it discloses nothing: not whether this is a read-only operation, not whether robot_sn must reference an existing robot, and not what the returned modes represent. For a tool with zero annotation coverage this is a complete gap.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.