VAPI AI & n8n Tutorial: Advanced Sales Agents (BIG UPDATES!)

In this tutorial, I'll show you step-by-step how to build an advanced AI voice agent using the most powerful tech stack in 2025. We'll use Vapi AI, n8n (self-hostable), Supabase, and other production tools to create an agent that can pick up phones, book meetings, search the web, and even improve itself autonomously. 💼 Work with Flireo: https://members.flireo.com/work-with-us This is NOT another basic Make.com tutorial - this is the real production-grade setup that agencies need to scale. 🚀 n8n Hosting Service (Queue Mode + Security): https://members.flireo.com/ai-agent-launch-service Vapi affiliate link: https://vapi.ai/?aff=Jesper 🔗 Members Platform (Blueprints & Resources): https://members.flireo.com 💼 Work with Flireo: https://members.flireo.com/work-with-us 🤝 Connect on LinkedIn: https://www.linkedin.com/in/jesper-rietbergen-b2b751264/ 🔔 Subscribe for more: /@jesperrietbergen Timestamps: 00:00 - Introduction: What We're Building Today 00:48 - Tech Stack Overview (Why n8n is better than Make) 08:04 - Why Vapi is the Best Voice AI Platform 19:05 - Setting Up Vapi & Creating Your First Agent 26:50 - Configuring Analysis & End-of-Call Reports 41:53 - Setting Up Supabase Database from Scratch 46:56 - Creating n8n Workflow & Server URL Configuration 54:06 - Building Calendar Availability with Calendly API 1:19:08 - Dynamic Prompts & Assistant Overrides Setup 1:33:01 - Testing & Getting End-of-Call Reports 1:41:02 - SQL Table Generation with ChatGPT 1:49:02 - Email Notifications with Resend 2:09:52 - Building Custom Tools (Search, Book, Notes) 2:18:34 - Leave Notes Tool Implementation 2:24:18 - Web Search with Tavily API 2:29:00 - Meeting Booking System 2:39:07 - Self-Improvement Feature (Autonomous Updates) 2:56:20 - Live Testing: Full Agent Demo 3:04:07 - Final Results & Next Steps What You'll Learn: ✅ Build a production-ready voice AI agent from scratch ✅ Set up n8n for scalable automation (vs Make.com limitations) ✅ Create a Supabase backend for conversation tracking ✅ Implement memory across conversations ✅ Build tools for calendar booking, web search, and note-taking ✅ Create self-improving agents with automated prompt optimization ✅ Handle authentication and security properly Why This Tech Stack? - n8n: Self-hostable, no operation limits, JavaScript support - Supabase: Open-source, scalable PostgreSQL database - Vapi: Best voice AI orchestration for agencies - Full ownership of your solution (no vendor lock-in) Prerequisites: - Basic automation knowledge helpful but not required - All platforms offer free tiers to get started - Following along step-by-step is recommended Resources Included: - Complete n8n blueprints - SQL statements for Supabase - Prompt templates - JavaScript functions ⚠️ Important: This is a production-level tutorial. If you're building for clients or scaling an agency, this is the setup you need. For hobby projects, simpler tools might suffice. #Vapiai #AITutorial #AppointmentSetter #aiagents #n8n #supabase