Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The annotation readOnlyHint=true already establishes the read-only nature. The description adds minimal extra context by specifying 'all', indicating the response includes every LAN port configuration without filtering. However, no further behavioral details such as pagination, order, or potential performance implications are provided.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.