Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
While annotations already indicate destructiveHint=true, the description adds valuable context: posts in the category are not deleted but simply unlinked. This goes beyond the annotation by clarifying the non-destructive effect on associated posts, which is exactly the kind of behavioral nuance needed.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.