Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, and destructiveHint as true, true, false – so the agent knows this is a safe read. The description adds that it uses the 'verified Auth0 token', implying authentication dependency, which is useful context beyond annotations. It doesn't disclose any other behavioral traits such as caching, rate limits, or what happens if the token is invalid.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.