Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full responsibility for behavioral disclosure. 'Fetch' implies a read-only operation, but no additional context is given about required permissions, side effects, error behavior, or rate limits. The description fails to disclose anything beyond the basic action.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.