n8n Enterprise AI Security Firewall — Guardrails for Secure Agents

Description

🛡️ n8n Guardrails: Risk Ranking

This workflow provides a complete testing rig for evaluating text against seven essential AI guardrails used in production systems.
It helps you detect jailbreak attempts, PII exposure, NSFW content, secret key leaks, malicious URLs, topical misalignment, and keyword violations.
Use the included Google Sheet or CSV to batch-test multiple inputs instantly.

## How It Works (Internal Workflow Overview)

1. Load Input Rows
The workflow reads each test entry (Guardrail_Type + Input_Text) from a Google Sheet or CSV.

2. Route to the Correct Guardrail
A Switch node sends the text to the appropriate guardrail:
Jailbreak
PII
Secret Keys
NSFW
URLs
Topical Alignment
Keywords

3. AI Guardrail Evaluation
Each guardrail uses Google Gemini to return:
Pass / Fail
Confidence score
Reasoning
Extracted PII, URLs, or entities (when relevant)

4. Optional Sanitization Layer
Three sanitizers demonstrate how to clean unsafe text:
PII Sanitization
Secret Key Sanitization
URL Sanitization

5. Review Results
Each guardrail node outputs clean JSON, making debugging fast and transparent.

## How to Set Up

1. Load the Test Dataset
Use either:
The included CSV file
The linked Google Sheet

Update only:
Document ID**
Sheet name**

2. Add Google Sheets Credentials
Create an OAuth2 credential → paste the Google JSON → connect your account.

3. Add Google Gemini Credential
Go to Credentials → Google Gemini (PaLM API) →
Paste your API key → attach it to all Guardrail nodes.

4. Review Sticky Notes
They visually explain:
What each guardrail checks
Why the check is important
Risk scoring and impact

5. Run the Workflow
Click Execute Workflow and inspect:
Each guardrail node’s output
The full execution data

## Requirements
n8n (latest version recommended)
Google Gemini API key
Google Sheets API access
Test dataset: n8n Guardrails test data.csv

## Test Data Included

The included dataset allows instant testing:
Jailbreak prompts
PII samples
API key leaks
NSFW text
Malicious URL examples
Off-topic content
Keyword triggers

## Template Metadata

Template Author: Sandeep Patharkar
Category: AI Safety / Agent Security
Difficulty: Intermediate
Estimated Setup Time: 10–15 minutes
Tags: Guardrails, AI Agents, Safety, Enterprise

## Connect With Me

Author: Sandeep Patharkar**
🔗 LinkedIn: https://www.linkedin.com/in/sandeeppatharkar
🏠 Skool AIC+: https://www.skool.com/aic-plus