# n8n enterprise AI security firewall: guardrails: n8n workflow

> Started by an event in a connected app, and works across Google Sheets. It hands the judgement calls to Gemini.

Source: https://millionrounds.com/workflow/n8n-enterprise-ai-security-firewall-guardrails (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Data collection](https://millionrounds.com/workflows?category=Data+collection#library)

# n8n enterprise AI security firewall: guardrails

Started by an event in a connected app, and works across Google Sheets. It hands the judgement calls to Gemini. 17 steps, 1 branch: a working afternoon to understand properly.

Medium Calls a model: Gemini

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fn8n-enterprise-ai-security-firewall-guardrails)

**17 steps** Medium: a working afternoon

**1** Branch: places the flow splits

**0** Loops or waits

**1** Service it connects to

## The flow

Starts it 1 Model 11 Logic 4 Service 1

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

- 1 **Google Gemini Chat Model** Lm Chat Google Gemini *Model*
- 2 **Personal Data** Set *Logic*
- 3 **API Keys** Set *Logic*
- 4 **URLS** Set *Logic*
- 5 **When clicking ‘Execute workflow’** Manual trigger *Starts it*
- 6 **Keywords** Guardrails *Model*
- 7 **NSFW** Guardrails *Model*
- 8 **Secret Keys** Guardrails *Model*
- 9 **Jailbreak** Guardrails *Model*
- 10 **PII** Guardrails *Model*
- 11 **Topical Alignment** Guardrails *Model*
- 12 **URLs** Guardrails *Model*
- 13 **Sanitize PII** Guardrails *Model*
- 14 **Sanitize Keys** Guardrails *Model*
- 15 **Sanitize URLs** Guardrails *Model*
- 16 **Guadrails Test Data** Google Sheets *Service*
- 17 **Switch** Switch *Logic*

## How it's built

- **Starts on:** An event in a connected app
- **Steps:** 17, with 1 branch
- **Size:** Medium: a working afternoon
- **Connects to:** Google Sheets
- **Model:** Gemini

## Questions

What does it need to run?

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

What starts it?

It starts on an event in a connected app.

Does it use AI?

Yes. It calls Gemini. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Plan an afternoon. 17 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 17 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%2Fn8n-enterprise-ai-security-firewall-guardrails)
- **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 data collection, with the same services where possible, closest in size first.

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- [**Approve detention charge disputes with OpenAI and Gmail** 17 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/approve-detention-charge-disputes-with-openai-and-gmail)
- [**Automate LinkedIn job search and applications with Claude** 17 steps · calls a model · Google Sheets](https://millionrounds.com/workflow/automate-linkedin-job-search-and-applications-with-claude)
- [**Automated Facebook message response with OpenAI and Airtable** 17 steps · calls a model · Airtable, Google Sheets](https://millionrounds.com/workflow/automated-facebook-message-response-with-openai-and-airtable)
- [**Build an AI-powered employee recognition system with OpenAI** 17 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/build-an-ai-powered-employee-recognition-system-with-openai)
- [**Classify QA/QC compliance issues with Gemini and GitHub** 17 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/classify-qa-qc-compliance-issues-with-gemini-and-github)