Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It states the tool returns a message about feature availability, which hints at a read-only operation, but doesn't clarify if it requires specific permissions, has side effects, or details the response format (e.g., structured data vs. plain text). For a tool with zero annotation coverage, this is insufficient to fully inform the agent about its behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.