Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. It discloses the return scope (state, checked_at, Resolver link) and what it deliberately does not do (inference). However, it lacks mention of potential error conditions, authentication requirements, rate limits, or behaviors on invalid ECZ-IDs, which would be expected for a complete picture.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.