Get started with Google Sheets in n8n

A hands-on starter workflow that teaches beginners how to: Pull rows from a Google Sheet Append a new record that mimics a form submission Generate AI-powered text with GPT-4o based on a “Topic” column Write the AI output back into the correct row using an update operation Along the way you’ll learn the three essential Google Sheets operations in n8n (read → append → update), see how to pass sheet data into an OpenAI node, and document each step with sticky-note instructions—perfect for anyone taking their first steps in no-code automation. 0️⃣ Prerequisites - Google Sheets 1. Open Google Cloud Console → create / select a project. 2. Enable Google Sheets API under APIs & Services. 3. Create an OAuth Desktop credential and connect it in n8n. 4. Share the spreadsheet with the Google account linked to the credential. - OpenAI 1. Create a secret key at <https://platform.openai.com/account/api-keys>. 2. In n8n → Credentials → New → choose OpenAI API and paste the key. - Sample sheet to copy (make your own copy and use its link) <https://docs.google.com/spreadsheets/d/15i9WIYpqc5lNd5T4VyM0RRptFPdi9doCbEEDn8QglN4/edit?usp=sharing> --- 1️⃣ Trigger Manual Trigger – lets you run on demand while learning. (Swap for a Schedule or Webhook once you automate.) --- 2️⃣ Read existing rows - Node: Get Rows from Google Sheets - Reads every row from Sheet1 of your copied file. --- 3️⃣ Generate a demo row - Node: Generate 1 Row of Data (Set node) - Pretends a form was submitted: - Name, Email, Topic, Submitted = "Yes" --- 4️⃣ Append the new row - Node: Append Data to Google - Operation append → writes to the first empty line. --- 5️⃣ Create a description with GPT-4o 1. OpenAI Chat Model – uses your OpenAI credential. 2. Write description (AI Agent) – prompt = the Topic. 3. Structured Output Parser – forces JSON like: { "description": "…" }. --- 6️⃣ Update that same row - Node: Update Sheets data - Operation update. - Matches on column Email to update the correct line. - Writes the new Description cell returned by GPT-4o. --- 7️⃣ Why this matters - Demonstrates the three core Google Sheets operations: read → append → update. - Shows how to enrich sheet data with an AI step and push the result right back. - Sticky Notes provide inline docs so anyone opening the workflow understands the flow instantly. --- 👤 Need help? Robert Breen – Automation Consultant ✉️ robert.j.breen@gmail.com 🔗 <https://www.linkedin.com/in/robert-breen-29429625/>