Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and a closed-world scope, so the safety profile is covered. The description adds the useful clarification that the response is guidance (docs + verification steps) and that the calling assistant, not the tool, performs any local edits, but it does not describe return structure or freshness of the guidance.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.