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The AI Agent Tutorial That Should've Been Your First (no code)

2025-08-12 Education
237.6k
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Jeff Su
Jeff Su
1.8m subscribers

Build Your First AI Agent in n8n: From Concept to Subscription Tracker

Master the three essential building blocks—Brain, Tools, and Brainstem—to transition from simply using AI models to actively constructing functional, automated workflows in n8n.

Short Summary

  • Define the three core components required for any functional AI agent: a Chat Model/Memory (Brain), external capabilities (Tools), and the System Prompt (Brainstem).
  • Learn to configure the OpenAI Chat Model and implement ephemeral memory using n8n nodes for contextual awareness.
  • Successfully connect and configure the Google Sheets tool to append data, emphasizing the importance of naming tools precisely before writing the system prompt.
  • Troubleshoot critical configuration failures, such as incorrect date handling and bypassing confirmation steps, by dynamically injecting input variables into the system prompt.

This guide walks you through building a basic subscription tracker using n8n Cloud, making complex AI automation tangible. We cover credential setup for external APIs, defining tool operations like "append row," and refining the system prompt using ChatGPT assistance for robust performance.

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Description

🌟 Build Your Command Center in Notion - https://www.pressplay.cc/link/s/F8236D6B Create your first AI agent in three simple steps using n8n! This tutorial shows you how to create an automated subscription tracker that processes natural language input and updates Google Sheets automatically. You'll learn to configure the agent's brain (chat model and memory), connect tools like Google Sheets, and write system prompts that control agent behavior. Perfect for non-technical users ready to transition from using AI tools to actually building with them. *TIMESTAMPS* 00:00 Build Your First AI Agent 00:29 Refresher on AI Agents 01:20 Getting Started on n8n 02:54 Why Bother? 03:32 Step 1: Building the Brain 08:21 Step 2: Connecting the Tools 10:38 Step 3: Activating the Brainstem 12:21 Testing our AI Agent 14:56 Beyond the Basics *RESOURCES MENTIONED* OpenAI API Setup: https://platform.openai.com/ ChatGPT System Prompt Template: https://www.jeffsu.org/build-your-first-ai-agent-in-n8n-a-step-by-step-guide Notion Command Center System: https://www.pressplay.cc/link/s/F8236D6B *BUILD A POWERFUL WORKFLOW* 📈 The Workspace Academy - https://academy.jeffsu.org/workspace-academy?utm_source=youtube&utm_medium=video&utm_campaign=186 ✍️ My Notion Command Center - https://www.pressplay.cc/link/s/DE1C4C50 *BE MY FRIEND:* 📧 Subscribe to my newsletter - https://www.jeffsu.org/newsletter/?utm_source=youtube&utm_medium=video&utm_campaign=description 📸 Instagram - https://instagram.com/j.sushie 🤝 LinkedIn - https://www.linkedin.com/in/jsu05/ *MY FAVORITE GEAR* 🎬 My YouTube Gear - https://www.jeffsu.org/yt-gear/ 🎒 Everyday Carry - https://www.jeffsu.org/my-edc/ #aiagents #ai #automation

Top Comments (10)

@huymakazi1028 2025-08-23

This isn't a tutorial; it's a rescue mission. I've been wandering in a desert of broken 'how-to' AI videos, and you just handed me an ice-cold bottle of water. Thank you for saving us all!

111 2 replies
@Ankit-qd3yo 2025-08-13

Your channel is a gold mine. You actually provide some key information in times where people are generalizing generic content. Thank you so much for your efforts.

78 1 replies
@LucasC.Vasconcelos 2025-08-13

Just found your channel, watched already 5 videos in a row, excellent content, i'm not a native speaker and the way you explain everything, pointing, talking even the obvious or basic is the game changer, thank you for your time, your job and you passion doing things, God bless you

27 3 replies
@IonizedComa 2025-10-19

as a dev, this was the best tutorial for me getting started to experiment on my own. I don't mind coding, but alot of tutorials did not click with me as to how the workflow process worked

21 1 replies
@JeffSu 2025-08-12

🌟 Build Your Command Center in Notion - https://www.pressplay.cc/link/s/F8236D6B TIMESTAMPS 00:00 Build Your First AI Agent 00:29 Refresher on AI Agents 01:20 Getting Started on n8n 02:54 Why Bother? 03:32 Step 1: Building the Brain 08:21 Step 2: Connecting the Tools 10:38 Step 3: Activating the Brainstem 12:21 Testing our AI Agent 14:56 Beyond the Basics

20 3 replies
@jiaanbeast1395 2025-08-12

the e list joke was top tier🤣🤣

15 1 replies
@jb3931 2025-08-15

Man this guy's video explanations are world class.

11
@SandeepSandeepbhalavi 2025-09-07

never thought id understand ai agents so easily

8
@hansenmarc 2025-09-27

In a sea of “10 AI automation ideas to make money” high-level videos, it’s a breath of fresh air to see someone make a step by step tutorial on how to actually create an AI agent. Thank you!

7 1 replies
@PrakashKumar-nn8pf 2026-01-28

man this makes it so much simpler

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