Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already indicate a safe, idempotent, read-only operation, and the description is consistent with them. It adds modest context by specifying that only text file content is returned, but it does not disclose any other behavior such as path constraints, size limits, or error conditions.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.