Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true, idempotentHint=true, and readOnlyHint=false, so the description's 'Delete' aligns with expectations. It adds context about sensitive data and complementary tools, but doesn't cover outcomes like permanent removal or behavior on missing keys. No contradiction with annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.