Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Without annotations, the description carries the transparency burden. It discloses that the operation returns all script folders and includes hierarchy paths, which is useful. However, it does not explicitly confirm read-only behavior, response format, or any potential side effects, though 'list' implies a safe read operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.