Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the behavioral disclosure burden. 'Panduan pakai' strongly implies an informational, read-only help resource, but the description does not explicitly state that it returns static documentation or performs no WhatsApp actions. This is adequate but not fully explicit.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.