Interact with WhatsApp via GOWA (Go WhatsApp Web Multi-Device) REST API for personal automation. Supports sending messages with ghost mentions (@everyone), images, documents, group management, and more. Always use REST mode (http://localhost:3000) for production.
Security: Remove gowa_helper.py script (file exfiltration risk), remove wget/systemd examples. Skill is now pure API documentation with curl examples only.