Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Without annotations, the description should disclose behavioral traits. It only states 'Team roster' with no details on what the roster includes (e.g., all players, positions, stats) or any side effects. The existence of an output schema reduces the burden, but the description adds minimal transparency.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.