Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations indicate non-read-only, non-destructive, and non-idempotent. The description adds the GitHub context but omits critical behavioral details like authentication requirements, error handling, or potential side effects (network calls). It provides moderate transparency.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.