Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden. It says it 'removes orphaned vectors,' which implies destructive action, but it doesn't disclose whether this action is reversible, what side effects occur (e.g., broken links), or whether it requires special permissions. The term 'remove' is clear but the behavioral profile around safety and rollback is opaque.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.