Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden but lacks behavioral details. It implies a mutation ('Decline') but doesn't specify permissions required, whether the action is reversible, or what happens after declining (e.g., notification to user). This leaves gaps for safe agent operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.