Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, openWorldHint=false and destructiveHint=false, so the safety profile is fully covered by structured data. The description adds only the retrieval granularity (one section, full text) and no auth, rate-limit, or not-found behavior, which is acceptable but modest given an output schema is also present.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.