Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It states the action is 'delete,' implying a destructive mutation, but fails to mention critical details like whether deletion is permanent, requires specific permissions, has side effects, or returns confirmation. This leaves the agent guessing about the tool's behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.