Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It mentions forwarding auth headers, which is helpful, but does not disclose other behavioral traits like idempotency, rate limits, or side effects. The basic read-only nature is implied but not explicit.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.