Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of behavioral disclosure. It only states 'Read', implying non-destructive operation, but fails to clarify behavior for edge cases (e.g., missing file, media file input handling) or return format. The discrepancy between 'transcript file' and 'media file OR transcript file' remains unaddressed.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.