Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Without annotations, the description bears full responsibility for behavioral disclosure. It states 'analyze,' implying read-only, but does not confirm that the tool does not modify data, explain required permissions, or describe the output format. This leaves the agent with uncertainty about side effects and results.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.