Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Without annotations, the description carries full burden. It only mentions the prerequisite but does not disclose whether the call is destructive (e.g., clears messages), if it can be called multiple times, or what happens if start_console was not called. Missing these details reduces transparency.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.