AI Voice Appointment Scheduler with WhatsApp Booking for Businesses

This workflow automates manual appointment scheduling in service businesses, replacing phone calls, calendar checks, and confirmations with AI voice agents and WhatsApp integration for efficient booking. It uses ExecuteWorkflowTrigger (n8n-nodes-base.executeWorkflowTrigger) as entry with JSON input for details like date/time/client, If (n8n-nodes-base.if) for validation (date formats, business hours, phone), routing priority (urgent/standard), status checks, and WhatsApp enabling, Set (n8n-nodes-base.set) for data sanitization, error responses, configs (retries/intervals), result processing (transcripts/duration/quality), success/partial formats, and timeout handling. HTTPRequest (n8n-nodes-base.httpRequest) initiates/monitors VAPI calls with metadata (service/priority/WhatsApp), sends WhatsApp templates/notifications via Facebook Graph API. Wait (n8n-nodes-base.wait) adapts delays by priority. This helps salons/clinics managing 50-200 appointments monthly, providing 24/7 booking with voice negotiation and WhatsApp confirmations, reducing no-shows via reminders while maintaining privacy.\n\nThis workflow saves 5-10 hours weekly on scheduling for staff, cutting costs by minimizing manual calls. Ideal for small to medium services (5-50 employees) in beauty/healthcare. Requires VAPI (~$0.05/min calls), WhatsApp Business (free API, $0.005/msg), n8n (free or $20/month cloud). Scalable to thousands of appointments, limited by API rates and call concurrency.\n\nThis workflow needs n8n from n8n.io (self-hosted) or cloud.n8n.io. For VAPI: Sign up at vapi.ai, get API key, add to HTTPRequest Authorization. WhatsApp: Create Business app at developers.facebook.com, get token/phone ID, add to HTTPRequest; set templates. Use JSON input for ExecuteWorkflowTrigger. No webhook; trigger via API calls to n8n workflow URL.\n\nThis workflow is tested by inputting sample JSON (e.g., {'date':'2024-12-15','start_time':'14:00','client_name':'Jono'}), verifying call initiation and WhatsApp sends. Common errors: Invalid VAPI key (regenerate at dashboard), rate limits (monitor usage/upgrade). Deploy by activating workflow. Monitor executions for failures; optimize by tuning Wait durations. Update API keys and templates quarterly.", "businessValue": "Saves 5-10 hours/week automating appointment bookings", "setupTime": "45-60 minutes", "difficulty": "Advanced", "requirements": ["VAPI account (~$0.05/min voice calls)", "WhatsApp Business API (free, $0.005/msg US)", "n8n installed (free or $20/month cloud)"], "useCase": "Automated scheduling for salons/clinics with voice/WhatsApp"