Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. It mentions deletion but does not disclose permanence, side effects (e.g., cache invalidation), or error scenarios (e.g., link not found, permission denied). The phrase 'delete' implies destruction but lacks detail.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.