Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations supply only destructiveHint=true, so the description carries most of the behavioral burden. It usefully discloses that this alters public booking acceptance and maps to a REST endpoint, but it does not say whether the change is reversible, what the tool returns, or what error occurs for an invalid/already-toggled id. Adds context beyond annotations, but not rich context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.