Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so description must carry full burden. 'Atomic durable' hints at transactional and persistent storage, but fails to disclose error handling, permission requirements, side effects (e.g., overwriting), or whether the operation is synchronous. Insufficient for safe invocation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.