Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
There are no annotations, so the description carries the full behavioral disclosure burden. 'Plan' is ambiguous: it could mean return a computed plan, persist something, or fetch external metadata. The description does not mention side effects, return values, or whether the operation is read-only.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.