Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description must carry the full burden of behavioral disclosure. It only states that a move occurs and the two coordinate modes; it does not explain the coordinate system, units, whether pattern_index identifies the piece being moved, what happens if both absolute and relative values are provided, or whether the move has any side effects. This leaves important behavior undocumented.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.