Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description adds a key behavioral detail ('Only provided fields change') beyond the schema, indicating partial update semantics. However, with no annotations, it does not disclose other behavioral aspects like permissions, idempotency, or return values, leaving the description to only partially carry the transparency burden.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.