Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided. The description does not disclose behavioral traits such as whether the update is idempotent, what happens if the note does not exist, or if it returns the updated note. It only says 'Update an existing note', which implies mutation but lacks detail.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.