Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so description bears full burden. It says 'assign' (a write operation) but does not disclose side effects (e.g., whether it's additive or replaces existing assignments), permission requirements, or idempotency. Minimal behavioral disclosure.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.