Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure, but it says nothing about side effects, permissions, idempotency, or whether the update overwrites the existing description. For a mutation tool, this is a significant gap, similar to the mid-tier update example in the calibration.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.