Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden but offers minimal behavioral context. It states what content is returned (speaker names, timestamps) but doesn't disclose permissions needed, rate limits, error conditions, format of the transcript (e.g., structured vs plain text), or whether it's a read-only operation. For a tool with zero annotation coverage, this is inadequate.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.