🧠 Sentiment Analysis of Product Reviews using Google Sheets & OpenAI

🚀 Quick Implementation Steps

Automated customer feedback analyzer:

• Trigger: Google Sheets triggers on new product review rows.
• Sentiment Analysis: Review text sent to OpenAI.
• Writeback: Resulting sentiment (Positive, Neutral, Negative) is written back to the sheet.

Just connect your credentials and sheet — you're ready to go!

🔍 What It Does

This workflow automatically analyzes user-submitted product reviews and classifies them by sentiment using OpenAI’s powerful language models. It eliminates the need to manually sift through feedback by tagging each review with a sentiment score.

The sentiment result is then written back to the Google Sheet next to the original review, enabling you to get a fast, clear snapshot of overall customer perception, satisfaction and pain points. Whether you're monitoring 10 or 10,000 reviews, this process scales effortlessly and updates every minute.

👤 Who’s It For

This workflow is designed for:

• E-commerce teams collecting user reviews.
• Product teams monitoring customer feedback.
• Marketing teams identifying promotable reviews.
• Support teams watching for negative experiences.
• SaaS platforms, apps, and survey tools managing structured text feedback.

✅ Requirements

You’ll need:

• A Google Sheet with two columns: Review and Sentiment
• Google Sheets OAuth2 credentials in n8n
• OpenAI API Key (for GPT-4o-mini or GPT-3.5)
• n8n instance with LangChain and OpenAI nodes enabled

⚙️ How It Works

1. Google Sheets Trigger: Watches for new rows every minute
2. OpenAI Integration:
   • Uses LangChain’s Sentiment Analysis node
   • Passes review text into GPT-4o-mini via the OpenAI Chat Model node
3. Sheet Update: The sentiment result (Positive, Negative, or Neutral) is written into the Sentiment column in the same row.

Sticky Notes included for better visual understanding inside the workflow editor.

🛠️ Steps to Configure and Use

1. Prepare Your Google Sheet

Make sure your sheet is named Sheet1 with the following structure:

2. Set Up Credentials

• Google Sheets: OAuth2 credentials
• OpenAI: API Key added via OpenAI API credential in n8n

3. Import & Activate Workflow

• Import the workflow JSON into your n8n instance.
• Assign the proper credentials to the trigger and OpenAI nodes.
• Activate the workflow.

🧩 How To Customize

• 🛎️ Alerting: Add Slack/Email nodes for negative sentiment alerts
• 🔄 Triggering: Change the polling interval to real-time triggers (e.g., webhook)
• 📊 Extended Sentiment: Modify sentiment categories (e.g., "Mixed", "Sarcastic")
• 🧾 Summary Report: Add Cron + Aggregation nodes for daily/weekly summaries
• 🧠 Prompt Tuning: Adjust system prompt for deeper or context-based sentiment evaluation

🧱 Add‑ons (Optional Features)

• Email Digest of Negative Reviews
• Google Drive Logging
• Team Notification via Slack
• Summary to Notion, Airtable, or Google Docs

📌 Use Case Examples

• Online Stores: Auto-tag reviews for reputation monitoring
• Product Teams: See which feature releases generate positive or negative buzz
• CX Dashboards: Feed real-time sentiment to internal BI tools
• Marketing: Extract glowing reviews for social proof
• Support: Triage issues by flagging critical comments instantly

...and many more applications wherever text feedback is collected.

🧰 Troubleshooting Guide

🤝 Need Help?

If you need assistance for

• ✅ Help setting up this workflow
• ⚙️ Customizing prompts or output
• 🚀 Automating your full review pipeline

👉 Contact us today at WeblineIndia. We will be happy to assist.