Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full disclosure burden. It does surface the most important trait — that the last ready vote triggers an immediate game start or next round, a significant side effect — but says nothing about whether you must already be in a game, whether the toggle is idempotent, or how failures present (the stale-revision rejection is documented only in the schema).
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.