Collect reviews, analyze sentiment, and generate reports with Decodo and Google Gemini

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1. Workflow Overview

This n8n workflow automates review collection, analysis, and reporting by scraping review links from Airtable, extracting structured review data, storing it in Google Sheets, and generating AI powe...

Best for

Market Research automation workflows
AI Summarization automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.airtable, @decodo/n8n-nodes-decodo.decodo, @n8n/n8n-nodes-langchain.lmchatgooglegemini, n8n-nodes-base.splitinbatches, n8n-nodes-base.googlesheets, n8n-nodes-base.scheduletrigger, @n8n/n8n-nodes-langchain.agent, n8n-nodes-base.code

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Zain Khan.

Original n8n.io source

1.1 Workflow description

Title: Collect reviews, analyze sentiment, and generate reports with Decodo and Google Gemini
Workflow name: Collect reviews, analyze sentiment, and generate reports with Decodo and Google Gemini

Use Cases Automated Review Tracking: Continuously fetch and process customer reviews without manual effort. Sentiment Analysis & Insights: Identify overall sentiment, common praise, complaints, and improvement areas using AI. Centralized Review Storage: Store all extracted reviews (date, text, rating) in Google Sheets for easy access and reporting. Scheduled Reporting: Receive summarized review insights via email on a defined schedule.

Good to Know The workflow runs on a daily schedule to process new review links stored in Airtable. Reviews are processed in batches to avoid rate limits and improve stability. Google Gemini is used for intelligent review extraction and sentiment analysis, which may incur API costs. Gemini models can be geo-restricted; a “model not found” error may indicate regional unavailability.

How it Works

Review Collection & Storage

Airtable Search: The workflow starts by searching Airtable for records that contain review links.
Decodo Scraper: Review links are processed to extract raw review content from external sources.
Loop Over Items: Reviews are handled in controlled batches for reliable processing.
AI Review Analyzer: Google Gemini extracts structured data such as review date, text, and rating.
Google Sheets Append: Each extracted review is saved as a new row in Google Sheets.

AI Review Analysis & Reporting

Scheduled Trigger: On a defined interval, the workflow fetches all stored reviews from Google Sheets.
Data Structuring Code: Reviews are transformed into a clean, structured JSON format for analysis.
AI Agent (Google Gemini): The AI analyzes all reviews to determine sentiment, key positives, common complaints, and improvement suggestions.
Email Notification: A summarized review analysis is sent via Gmail.

How to Use

Airtable Credentials: Connect your Airtable account and ensure review links are stored in the specified table.
Google Sheets Credentials: Set up Google Sheets OAuth2 to store and retrieve review data.
Google Gemini Credentials: Configure your Google Gemini API key for AI-powered extraction and analysis.
Gmail Credentials: Connect a Gmail account to receive automated review summaries.
Activate Workflow: Enable the workflow to start automated review monitoring and reporting.

Requirements

n8n instance (self-hosted or cloud)
Airtable base containing review links
Google Sheets document for storing reviews
Google Gemini API key
Gmail account for sending reports

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - Search records

Type / Role: n8n-nodes-base.airtable - airtable
Config choices: Version 2.1

Block 2 - Decodo

Type / Role: @decodo/n8n-nodes-decodo.decodo - decodo
Config choices: Version 1

Block 3 - Google Gemini Chat Model

Type / Role: @n8n/n8n-nodes-langchain.lmChatGoogleGemini - lmChatGoogleGemini
Config choices: Version 1

Block 4 - Loop Over Items

Type / Role: n8n-nodes-base.splitInBatches - splitInBatches
Config choices: Version 3

Block 5 - Append row in sheet

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.7

Block 6 - Schedule Trigger1

Type / Role: n8n-nodes-base.scheduleTrigger - scheduleTrigger
Config choices: Version 1.2

Block 7 - AI Agent1

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 2.2

Block 8 - Google Gemini Chat Model1

Type / Role: @n8n/n8n-nodes-langchain.lmChatGoogleGemini - lmChatGoogleGemini
Config choices: Version 1

Block 9 - Get row(s) in sheet

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.7

Block 10 - Code in JavaScript

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 11 - Send a message

Type / Role: n8n-nodes-base.gmail - gmail
Config choices: Version 2.1

Block 12 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 13 - Sticky Note3

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 14 - Run Daily

Type / Role: n8n-nodes-base.scheduleTrigger - scheduleTrigger
Config choices: Version 1.2

Block 15 - Analyzer

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 2.2

Block 16 - Delay until next cycle

Type / Role: n8n-nodes-base.wait - wait
Config choices: Version 1.1

Block 17 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 18 - Sticky Note4

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

3. Summary Table

Workflow	Collect reviews, analyze sentiment, and generate reports with Decodo and Google Gemini
Complexity	advanced
Nodes	18
Categories	Market Research, AI Summarization
Author	Zain Khan
Published	03 Feb 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/13189/13189.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source Market Research workflows AI Summarization workflows

Frequently asked questions

What does Collect reviews, analyze sentiment, and generate reports with Decodo and Google Gemini do?

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Market Research, AI Summarization use case.

Zain Khan

21 workflows

Nodes

n8n-nodes-base.airtable @decodo/n8n-nodes-decodo.decodo @n8n/n8n-nodes-langchain.lmchatgooglegemini n8n-nodes-base.splitinbatches n8n-nodes-base.googlesheets n8n-nodes-base.scheduletrigger @n8n/n8n-nodes-langchain.agent n8n-nodes-base.code

Complexity

advanced

Published 03 Feb 2026

Likes 0

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Install path: /data/workflows/13189/13189.json

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Collect reviews, analyze sentiment, and generate reports with Decodo and Google Gemini

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Search records

Block 2 - Decodo

Block 3 - Google Gemini Chat Model

Block 4 - Loop Over Items

Block 5 - Append row in sheet

Block 6 - Schedule Trigger1

Block 7 - AI Agent1

Block 8 - Google Gemini Chat Model1

Block 9 - Get row(s) in sheet

Block 10 - Code in JavaScript

Block 11 - Send a message

Block 12 - Sticky Note

Block 13 - Sticky Note3

Block 14 - Run Daily

Block 15 - Analyzer

Block 16 - Delay until next cycle

Block 17 - Sticky Note1

Block 18 - Sticky Note4

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions