Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already establish readOnlyHint=false and destructiveHint=false, so the description need not repeat these. It adds the prerequisite that SCRIPTING_ENABLED=true, which is useful operational context. However, it does not disclose what happens when committing, whether the operation is reversible, or any side effects.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.