# Review Guard: Google Review Monitor with Slack Alerts: n8n workflow

> Started by a clock, and works across Google Sheets. 19 steps, 2 branches: a working afternoon to understand properly.

Source: https://millionrounds.com/workflow/review-guard-google-review-monitor-with-slack-alerts (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Alerts and monitoring](https://millionrounds.com/workflows?category=Alerts+and+monitoring#library)

# Review Guard: Google Review Monitor with Slack Alerts

Started by a clock, and works across Google Sheets. 19 steps, 2 branches: a working afternoon to understand properly.

Medium

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Freview-guard-google-review-monitor-with-slack-alerts)

**19 steps** Medium: a working afternoon

**2** Branches: places the flow splits

**0** Loops or waits

**1** Service it connects to

## The flow

Starts it 1 Logic 8 Service 10

The steps in the order they run, from what starts it.

- 1 **⏰ Every 30 Minutes** Schedule trigger *Starts it*
- 2 **🔧 Configuration** Set *Logic*
- 3 **📍 Pull Google Reviews** Http Request *Service*
- 4 **📖 Read Processed IDs** Google Sheets *Service*
- 5 **🔄 Extract & Normalize** Code *Logic*
- 6 **🧹 Deduplicate** Code *Logic*
- 7 **❓ Any New Reviews?** If *Logic*
- 8 **🧠 Sentiment Classifier (AI)** Http Request *Service*
- 9 **🛑 Stop, No New Reviews** No Op *Logic*
- 10 **📊 Parse Sentiment** Code *Logic*
- 11 **✍️ Generate Response (AI)** Http Request *Service*
- 12 **📝 Parse Response** Code *Logic*
- 13 **🔀 Route by Sentiment** Switch *Logic*
- 14 **🚨 Slack: Critical Alert** Http Request *Service*
- 15 **⚠️ Slack: Negative Review** Http Request *Service*
- 16 **✅ Slack: Positive Review** Http Request *Service*
- 17 **ℹ️ Slack: Neutral Review** Http Request *Service*
- 18 **📊 Log to Google Sheets** Google Sheets *Service*
- 19 **💾 Save Processed ID** Google Sheets *Service*

## How it's built

- **Starts on:** A clock
- **Steps:** 19, with 2 branches
- **Size:** Medium: a working afternoon
- **Connects to:** Google Sheets
- **Model:** None. This is plumbing, not judgement

## Questions

What does it need to run?

An n8n account, plus your own Google Sheets account. You connect your own accounts after importing it; none are included.

What starts it?

It starts on a clock.

Does it use AI?

No. Every step is fixed logic or a call to a service, so it does the same thing every time.

How long does it take to set up?

Plan an afternoon. 19 steps is enough that you should read each one before running it.

How do I import it?

Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.

**Before you run it**

Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 19 steps before you point it at anything that matters.

## Run it in n8n

- **Create your n8n account** Free to start. n8n is where the workflow runs. [Create an n8n account ↗](https://millionrounds.com/n8n)
- **Download the workflow** Free with a Millionrounds account. [Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Freview-guard-google-review-monitor-with-slack-alerts)
- **Paste it into n8n** Open a new workflow in n8n and paste. Then connect your own accounts.

Stored with the author's traces removed: canvas notes, instance identifiers, saved credential names and any live document they had left behind.

## Connects to

Each opens the other workflows that use it.

[Google Sheets](https://millionrounds.com/workflows?service=Google+Sheets#library)

## Workflows like it

Also alerts and monitoring, with the same services where possible, closest in size first.

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- [**Monitor company budgets with Bexio and Google Sheets** 19 steps · Gmail, Google Sheets](https://millionrounds.com/workflow/monitor-company-budgets-with-bexio-and-google-sheets)
- [**Monitor competitor Meta Ads creatives and send alerts** 19 steps · Google Sheets, Slack](https://millionrounds.com/workflow/monitor-competitor-meta-ads-creatives-and-send-alerts)
- [**Monitor competitors & generate content ideas with Gemini** 19 steps · Email, Google Sheets](https://millionrounds.com/workflow/monitor-competitors-and-generate-content-ideas-with-gemini)
- [**Monitor futures trades and send risk alerts with Binance** 19 steps · Gmail, Google Sheets](https://millionrounds.com/workflow/monitor-futures-trades-and-send-risk-alerts-with-binance)
- [**Multiple websites monitoring with Gmail and Google Sheets** 19 steps · Gmail, Google Sheets](https://millionrounds.com/workflow/multiple-websites-monitoring-with-gmail-and-google-sheets)