Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, openWorldHint=true, idempotentHint=true, and destructiveHint=false, fully covering safety and idempotency. The description adds minimal behavioral context beyond 'raw contents' (implying text output). With annotations present, the bar is lower, but the description does not elaborate on what 'raw' means or any potential variations (e.g., error states).
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.