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How to Build a 24/7 Voice AI Booking Agent Using Vapi, ElevenLabs, and n8n

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A technical guide published on DEV Community outlines how to build a fully automated voice AI appointment booking system by integrating Vapi's speech recognition, ElevenLabs' text-to-speech, and an n8n workflow. The system can answer calls, extract booking intent, create Google Calendar events, send SMS confirmations via Twilio, and deliver AI-generated voice reminders. Most core tools are available on free tiers, with optional paid components like Twilio's pay-as-you-go SMS and n8n's cloud plan at $20 per month. The estimated build time is six to eight hours, covering account setup, workflow configuration, and testing. The guide targets developers looking to deploy a production-ready scheduling assistant without building custom infrastructure from scratch.

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How to Build a 24/7 Voice AI Booking Agent Using Vapi, ElevenLabs, and n8n · ShortSingh