Udemy – AI Voice Agents: Automation with Vapi, ElevenLabs, n8n & MCP

AI Voice Agents are transforming the way businesses and individuals interact. They combine Large Language Models (LLMs) with speech input and output (STT & TTS) to create powerful real-time conversations – whether as AI phone assistants, booking tools, customer support bots, or sales agents.

But how do you actually build and deploy production-ready AI Voice Agents? Which platforms and tools deliver the best results? And how can you turn them into a profitable business opportunity?

This course gives you the complete roadmap – from fundamentals to advanced integrations and monetization.

What you’ll learn in this course

Fundamentals & Technology:

• Voice Agents explained: goals, strengths, weaknesses & business potential
• How Voice Agents work: LLMs, Text-to-Speech (TTS), Speech-to-Text (STT) & model selection
• Platform overview: Vapi, ElevenLabs, Fonio, LiveKit & open-source alternatives
• Cost-benefit analysis: is an AI Voice Agent business really worth it?

Vapi Basics – from zero to your first AI Phone Agent:

• Vapi step by step: registration, interface & creating your first agent
• Build a booking assistant in German with ElevenLabs voices & prompt engineering
• System prompts in practice: fine-tuning for natural, reliable conversations
• Embed Voice Agents into websites & customize with CSS
• Testing, debugging & continuous optimization

Advanced integration with n8n, MCP & RAG:

• n8n for automation: setup, API keys & workflows
• Connect Vapi & n8n via MCP and add powerful tools
• RAG (Retrieval-Augmented Generation): train Voice Agents with vector databases
• Extend Voice Agents with email automation, Google Sheets, external APIs & databases
• Connect MCP servers with Vapi & LLMs like DeepSeek, Llama & Mistral
• Add & integrate phone numbers for inbound and outbound calls
• Use JavaScript variables for dynamic names, dates & personalized conversations
• Automate emails with Vapi & n8n (including JavaScript variables)