Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint and destructiveHint, so the tool is known to be safe. The description adds a caution about not inferring ownership, licensing, or unpublished availability, which clarifies what the response does not include. This is useful but not a deep behavioral disclosure.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.