Complete AI safety suite: test 9 guardrail layers with Groq LLM
Who's It For
AI developers, automation engineers, and teams building chatbots, AI agents, or workflows that process user input. Perfect for those concerned about security, compliance, and content safety.
What It Does
This workflow demonstrates all 9 guardrail types available in n8n's Guardrails node through real-world test cases. It provides a comprehensive safety testing suite that validates:
- Keyword blocking for profanity and banned terms
- Jailbreak detection to prevent prompt injection attacks
- NSFW content filtering for inappropriate material
- PII detection and sanitization for emails, phone numbers, and credit cards
- Secret key detection to catch leaked API keys and tokens
- Topical alignment to keep conversations on-topic
- URL whitelisting to block malicious domains
- Credential URL blocking to prevent URLs with embedded passwords
- Custom regex patterns for organization-specific rules (employee IDs, order numbers)
- Each test case flows through its corresponding guardrail node, with results formatted into clear pass/fail reports showing violations and sanitized text.
How to Set Up
- Add your Groq API credentials (free tier works fine)
- Import the workflow
- Click "Test workflow" to run all 9 cases
- Review the formatted results to understand each guardrail's behavior
Requirements
- n8n version 1.119.1 or later (for Guardrails node)
- Groq API account (free tier sufficient)
- Self-hosted instance (some guardrails use LLM-based detection)
How to Customize
- Modify test cases in the "Test Cases Data" node to match your specific scenarios
- Adjust threshold values (0.0-1.0) for AI-based guardrails to fine-tune sensitivity
- Add or remove guardrails based on your security requirements
- Integrate individual guardrail nodes into your production workflows
- Use the sticky notes as reference documentation for implementation
This is a plug-and-play educational template that serves as both a testing suite and implementation reference for building production-ready AI safety layers.
n8n AI Safety Suite with Groq LLM and Guardrails
This n8n workflow demonstrates a robust AI safety suite, integrating Groq's fast language model with multiple layers of Langchain Guardrails. It's designed to process an initial input, apply several distinct guardrail checks, and then use a Groq LLM for processing, ensuring that the AI interaction adheres to predefined safety and content policies.
What it does
This workflow provides a comprehensive example of how to implement multi-layered AI safety checks before and after interacting with a large language model.
- Manual Trigger: Initiates the workflow upon manual execution.
- Edit Fields (Input): Sets up an initial input, likely representing a user prompt or data to be processed.
- Guardrails (Input): Applies the first layer of safety checks to the initial input. This could involve sanitizing data, checking for PII, or detecting harmful content.
- Split Out: Divides the output from the first guardrail into individual items, allowing for parallel or sequential processing of each item.
- Groq Chat Model: Processes the (now guarded) input using the Groq LLM, generating a response.
- Guardrails (Output): Applies a second layer of safety checks to the output generated by the Groq LLM. This ensures the LLM's response itself is safe and compliant.
- Sticky Note: A placeholder for comments or documentation within the workflow, indicating the purpose of the "Input" section.
Prerequisites/Requirements
- n8n Instance: A running instance of n8n.
- Groq API Key: An API key for the Groq language model, configured as a credential in n8n.
- Langchain Guardrails: Ensure the
@n8n/n8n-nodes-langchainpackage is installed and configured in your n8n instance to utilize the Guardrails node.
Setup/Usage
- Import the Workflow: Download the provided JSON and import it into your n8n instance.
- Configure Credentials:
- Set up your Groq API Key as a credential within n8n.
- Customize Nodes:
- Edit Fields (Input): Modify the data in this node to define the initial input you want to test with the AI safety suite.
- Guardrails (Input) and Guardrails (Output): Configure the specific guardrail policies within these nodes according to your safety requirements (e.g., PII detection, content moderation, prompt injection prevention).
- Groq Chat Model: Select the desired Groq model and any specific parameters for your LLM interaction.
- Execute Workflow: Run the workflow manually to observe the multi-layered guardrail checks and Groq LLM processing in action.
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