Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden. While '新規作成' (create) clearly implies a write/mutation operation, the description does not disclose whether profile_id is required, what happens on duplicate education entries, validation rules, or what the response/return value looks like. The schema hints at profile-scoped vs account-scoped key behavior, but the description doesn't surface this responsibility to the agent.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.