Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is fully covered structurally. The sentence "It does not modify the submission" largely restates those hints rather than adding new behavioral context such as latency, rate limits, or what happens when the submission is still pending. Useful but thin against an already-rich annotation set.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.