Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full disclosure burden. It never says whether results are read-only (implied only), how ambiguous or mixed-language input is handled, whether a confidence score is returned, or what the trailing '[conductor: verified stochastic command]' token even means — that artifact is unexplained noise that could mislead an agent.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.