NoSFeR Tech is an AI-powered receptionist that lives inside your business WhatsApp. Unlike menu-based bots, it understands natural language, patients can write "I need a cleaning appointment for Friday at 10", the system checks real availability from Google Calendar, confirms the slot, and sends automated reminders. Built for dental clinics, medical practices, and appointment-based businesses. Multi-location ready: one backend, multiple locations with independent schedules and staff. GDPR and Habeas Data compliant. 134 automated tests passing in production. Features: Natural language understanding, real-time Google Calendar integration, automated appointment reminders with confirmation tracking, multi-location support, human handoff when needed, 24/7 availability, Prometheus/Grafana monitoring.