Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description goes far beyond the readOnly/destructive annotations: it discloses the exact return contents, what is omitted (source evidence and raw URLs), the deterministic next_action draft behavior, the instruction to replace or skip it, and the fact that no LLM is called. No contradiction with annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.