Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds that the tool returns connection artifacts rather than mutating anything, but discloses nothing further about behavior, prerequisites, or failure modes; with an output schema present, the return-value detail is largely redundant.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.