Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Without annotations, the description carries full burden. It clearly states the destructive action of clearing all triples, which implies irreversibility. However, it does not explicitly mention that the action is irreversible or whether it requires special permissions, leaving some behavioral context unclear.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.