Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and non-destructive behavior, so the description needs less safety disclosure. It adds only generic pagination/filtering context and does not surface notable quirks such as the 'findings' include behavior, which is left to the schema. No contradiction exists.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.