Monitor restaurant ratings with Google Places, Gemini, Sheets, and Slack

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1. Workflow Overview

What this workflow does Automatically monitors restaurant ratings on Google Places daily, detects meaningful changes, uses Google Gemini AI to diagnose the root cause from real customer reviews, an...

Best for

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

Tools used

n8n-nodes-base.stickynote, n8n-nodes-base.googlesheets, n8n-nodes-base.splitinbatches, n8n-nodes-base.httprequest, n8n-nodes-base.code, n8n-nodes-base.if, @n8n/n8n-nodes-langchain.googlegemini, n8n-nodes-base.merge

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: Monitor restaurant ratings with Google Places, Gemini, Sheets, and Slack
Workflow name: Monitor restaurant ratings with Google Places, Gemini, Sheets, and Slack

What this workflow does

Automatically monitors restaurant ratings on Google Places daily, detects meaningful changes, uses Google Gemini AI to diagnose the root cause from real customer reviews, and delivers smart alerts to Slack — categorised as 🔴 Critical, 🟡 Watch, or 🟢 Positive.

Why it's unique

Most monitoring tools just tell you that a rating changed. RestaurantPulse tells you why — by reading actual customer reviews through AI and suggesting one concrete action to fix it.

How it works

Reads restaurant list from Google Sheets (add any restaurant via place_id)
Fetches live rating + reviews from Google Places API
Compares against last known state stored in Google Sheets
AI diagnoses root cause if change detected
Routes alert to Slack by severity level
Logs all alerts to Google Sheets for history

Prerequisites

Google Places API key (console.cloud.google.com)
Google Sheets OAuth2 credentials
Google Gemini API key
Slack OAuth2 credentials

Google Sheets Setup

Create a spreadsheet with two sheets:

Sheet 1 — restaurant_list Columns: place_id | name | last_rating | last_review_count | last_checked

How to find place_id

Call this URL in your browser: https://maps.googleapis.com/maps/api/place/findplacefromtext/json?input=RESTAURANT+NAME+CITY&inputtype=textquery&fields=place_id,name&key=YOUR_KEY

Alert Levels

🔴 Critical — rating dropped 0.3+ points 🟡 Watch — rating dropped 0.1+ points OR 50+ new reviews 🟢 Positive — rating improved 0.2+ points

Sample Output

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 - 📋 Workflow Overview

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

Block 2 - 📥 Phase 1 Label

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

Block 3 - 🧠 Phase 2 Label

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

Block 4 - 🤖 Phase 3 Label

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

Block 5 - 📣 Phase 4 Label

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

Block 6 - 📊 Read Restaurant List

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

Block 7 - 🔄 Loop Over Restaurants

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

Block 8 - 🌐 Fetch Live Data (Google Places API)

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.4

Block 9 - 🧠 Change Detection Engine

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

Block 10 - 🚦 Alert Worthy? (IF)

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2.3

Block 11 - 🤖 AI Diagnosis (Google Gemini)

Type / Role: @n8n/n8n-nodes-langchain.googleGemini - googleGemini
Config choices: Version 1.1

Block 12 - 🔀 Merge AI + Restaurant Data

Type / Role: n8n-nodes-base.merge - merge
Config choices: Version 3.2

Block 13 - 📡 Alert Routing (Switch)

Type / Role: n8n-nodes-base.switch - switch
Config choices: Version 3.4

Block 14 - 🔴 Critical Alert (Slack)

Type / Role: n8n-nodes-base.slack - slack
Config choices: Version 2.3

Block 15 - 🟡 Watch Alert (Slack)

Type / Role: n8n-nodes-base.slack - slack
Config choices: Version 2.3

Block 16 - 🟢 Positive Alert (Slack)

Type / Role: n8n-nodes-base.slack - slack
Config choices: Version 2.3

Block 17 - 💾 Update State (Google Sheets)

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

Block 18 - 📜 Log Alert History (Google Sheets)

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

Block 19 - Schedule Trigger

Type / Role: n8n-nodes-base.scheduleTrigger - scheduleTrigger
Config choices: Version 1.3

3. Summary Table

Workflow	Monitor restaurant ratings with Google Places, Gemini, Sheets, and Slack
Complexity	advanced
Nodes	19
Categories	Market Research, AI Summarization
Author	Divyanshu Gupta
Published	06 May 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/15516/15516.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 Monitor restaurant ratings with Google Places, Gemini, Sheets, and Slack 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.

Divyanshu Gupta

10 workflows

Nodes

n8n-nodes-base.stickynote n8n-nodes-base.googlesheets n8n-nodes-base.splitinbatches n8n-nodes-base.httprequest n8n-nodes-base.code n8n-nodes-base.if @n8n/n8n-nodes-langchain.googlegemini n8n-nodes-base.merge

Complexity

advanced

Published 06 May 2026

Likes 0

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Install path: /data/workflows/15516/15516.json

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Monitor restaurant ratings with Google Places, Gemini, Sheets, and Slack

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

What this workflow does

Why it's unique

How it works

Prerequisites

Google Sheets Setup

How to find place_id

Alert Levels

Sample Output

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - 📋 Workflow Overview

Block 2 - 📥 Phase 1 Label

Block 3 - 🧠 Phase 2 Label

Block 4 - 🤖 Phase 3 Label

Block 5 - 📣 Phase 4 Label

Block 6 - 📊 Read Restaurant List

Block 7 - 🔄 Loop Over Restaurants

Block 8 - 🌐 Fetch Live Data (Google Places API)

Block 9 - 🧠 Change Detection Engine

Block 10 - 🚦 Alert Worthy? (IF)

Block 11 - 🤖 AI Diagnosis (Google Gemini)

Block 12 - 🔀 Merge AI + Restaurant Data

Block 13 - 📡 Alert Routing (Switch)

Block 14 - 🔴 Critical Alert (Slack)

Block 15 - 🟡 Watch Alert (Slack)

Block 16 - 🟢 Positive Alert (Slack)

Block 17 - 💾 Update State (Google Sheets)

Block 18 - 📜 Log Alert History (Google Sheets)

Block 19 - Schedule Trigger

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