How to Build a RAG AI Voice Agent (Vapi + n8n Tutorial)

Опубликовано: 25 Июль 2025
на канале: Anthony Ton | AI Voice Agents

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https://www.skool.com/anthony-ton-ai-...
Get my 0-to-100 course, direct 1-on-1 mentorship, and all my proven code to build this exact agent.

➡️ BUSINESS OWNERS: Want this AI agent built for your business? Visit us at https://www.apexagentsystems.com to get it done for you.

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In this complete guide, you will learn how to build a RAG (Retrieval-Augmented Generation) AI voice agent using Vapi and n8n. This detailed tutorial covers how to automatically ingest documents from Google Drive, create vector embeddings with Google Gemini, store them in a Supabase vector database, and connect it all to a Vapi agent that can answer questions from your private knowledge base.

This is the perfect project for any AI agency owner or automation developer looking to build and sell a high-value service. By the end of this video, you will have a complete, sellable RAG agent that can act as an intelligent FAQ bot or an internal knowledge assistant for any business, helping them make more money by automating information retrieval.

To get all the prompts, templates, and the complete n8n workflow file shown in this tutorial, join our private Skool community.

▶️ GET THE FREE N8N WORKFLOW TEMPLATE
Download the free starter workflow on the official tutorial page:
https://apexagentsystems.com/vapiRagA...

🤖 WHAT YOU'LL LEARN IN THIS TUTORIAL:
• How to build a complete RAG pipeline in n8n.
• Vapi and n8n integration for server-side tools.
• How to use Google Drive triggers to automate document ingestion.
• The complete setup for a Supabase Vector Store.
• How to use Google Gemini for creating text embeddings.
• Building a custom AI voice agent that queries a private knowledge base.
• Deleting old document versions to keep your knowledge base current.

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🤖 THE STACK WE USE:
Apify (Find New Clients): https://apify.com?fpr=anthonyton
Instantly.ai (Email Clients): https://instantly.ai/?via=anthony-ton
Vapi (Deploy AI Voice Agents): https://vapi.ai/?aff=anthonyton
n8n (Automate Everything): https://n8n.partnerlinks.io/35z24mh39jbp

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TIMESTAMPS:
0:00 - What We're Building: The Auto-Updating RAG Agent
0:13 - Step 1: Initial Setup (Import Workflow & Credentials)
1:11 - Google Drive API & OAuth Setup
2:37 - Supabase Project & Credentials Setup
4:00 - Step 2: Creating the Knowledge Base in Google Drive
5:21 - Step 3: Configuring the Vapi Tool
6:38 - Step 4: Configuring the Vapi Assistant
8:09 - Step 5: Running the Document Ingestion Workflow
9:26 - Live Demo: Calling the RAG Agent
10:18 - Live Demo: Updating the Knowledge Base in Real-Time
11:03 - Outro: How to Get the Template

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This Vapi tutorial shows you how to build a RAG AI voice agent for your AI agency using n8n automation. If you're looking for a guide on how to use Vapi with n8n and Supabase, or how to create an AI voice agent that can answer questions from a private knowledge base using Google Gemini, this video covers the entire process from start to finish. This is a key skill for anyone looking to profit with AI automation.

#Vapi #n8n #RAG #AIautomation #AIAgent