Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, and the description's 'Determine' is consistent with a safe computation. It adds that the result is a steps/clicks difference and direction, but does not reveal additional behavioral nuance such as label assumptions or failure behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.