Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already cover the safety profile (non-destructive write, open-world), so the description needed to add import-specific behavior. It does not say whether the import merges with or overwrites existing vault contents, how duplicates are handled, whether it is transactional/atomic, or whether authentication/org membership is required — all material for an import operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.