Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden for behavioral disclosure. While 'Read' implies a read-only operation, it doesn't specify authentication requirements, rate limits, error handling, or what happens when some files are inaccessible. For a batch operation on a remote file system, this leaves significant behavioral questions unanswered about partial successes, ordering guarantees, or performance implications.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.