Dynamic AI Model Selector with GDPR Compliance via Requesty and Google Sheets

Description

Overview
This comprehensive n8n workflow provides a sophisticated solution for dynamically selecting and using AI models while maintaining GDPR compliance. It leverages Requesty's European-based AI routing service to ensure data privacy and automatically updates available model options based on real-time API availability.

Choose Your Integration Approach

Before diving into the setup, it's crucial to understand that this workflow offers two completely independent AI integration approaches:

Approach 1: Dynamic HTTP Request Workflow (Advanced)
Complete infrastructure with dynamic model selection

What it includes:
Automatic model discovery from Requesty's API
Dynamic dropdown updates in web forms
Model selection persistence in Google Sheets
Complex workflow orchestration with multiple phases
Full control over API parameters and response handling

Best for:
Teams needing multiple AI models for different tasks
Organizations requiring model usage auditing
Users who want maximum flexibility and control
Advanced n8n users comfortable with complex workflows

Setup complexity: High (requires multiple components and configurations)

Approach 2: Standalone AI Agent (Simple)
Plug-and-play solution without complexity

What it includes:
Direct use of n8n's native OpenAI Chat Model node
Simple configuration: just set base URL to https://router.requesty.ai/v1
Immediate GDPR compliance through European infrastructure
No model discovery or selection infrastructure needed

Best for:
Users wanting quick GDPR-compliant AI integration
Single-model use cases
Simple chat interfaces
Users preferring minimal configuration

Setup complexity: Low (5-minute setup)

Quick Start: Approach 2 (Simple AI Agent)

If you want to get started quickly with GDPR-compliant AI, follow these steps:

Step 1: Register with Requesty
Visit https://www.requesty.ai
Complete the registration process
Choose "OpenAI-compatible" integration
Note your API endpoint: https://router.requesty.ai/v1
Create an API key (name it "n8n Integration")

Step 2: Configure n8n
Add a new OpenAI credential in n8n
Set the base URL to: https://router.requesty.ai/v1
Enter your Requesty API key
Add an OpenAI Chat Model node to your workflow
Select your Requesty credential

Step 3: Test
Your AI agent is now ready and GDPR-compliant! All requests will be routed through Requesty's European infrastructure.

Advanced Setup: Approach 1 (Dynamic HTTP Workflow)

For users who need dynamic model selection and advanced features, follow this comprehensive setup:

Prerequisites
n8n instance (self-hosted or cloud)
Requesty API credentials
Google Sheets integration
Basic understanding of n8n workflows

Phase 1: Requesty Account Setup

1.1 Registration Process
Navigate to https://www.requesty.ai
Sign up with your email address
Complete the welcome process

1.2 Integration Configuration
Choose Integration Type: Select "OpenAI-compatible"
Note API Endpoint: https://router.requesty.ai/v1
Create API Key:
Provide a descriptive name (e.g., "n8n Dynamic Workflow")
Click "Create API Key"
Important: Save this key securely - you'll need it for n8n configuration

Phase 2: Google Sheets Preparation

2.1 Create Storage Sheet
Create a new Google Sheet named "AI Model Selections"
Add the following column:
A1: "Selected Model"
Note the Google Sheet ID from the URL

2.2 Configure Google Sheets API
Enable Google Sheets API in Google Cloud Console
Create service account credentials
Share your sheet with the service account email
Download the credentials JSON file

Phase 3: n8n Workflow Configuration

3.1 Import Workflow
Download the workflow JSON file
Import into your n8n instance
Review all nodes and connections

3.2 Configure Credentials

Requesty API Credentials:
Go to n8n Credentials section
Create new HTTP Request credential
Set authentication type to "Header Auth"
Header name: "Authorization"
Header value: "Bearer YOUR_REQUESTY_API_KEY"

Google Sheets Credentials:
Create new Google Sheets credential
Upload your service account JSON file
Test the connection

Google Sheets Nodes:
Update sheet ID in all Google Sheets nodes
Verify column mappings match your sheet structure

Phase 4: Troubleshooting Guide

Common Issues and Solutions

Models Not Loading:
Verify Requesty API credentials
Check network connectivity and API endpoint URL

Selection Not Persisting:
Verify Google Sheets credentials and write permissions
Check sheet ID configuration

Chat Not Responding:
Verify selected model availability
Check API request formatting and response processing

Debug Procedures
Enable debug mode and detailed logging
Check node outputs and data flow
Validate API calls with external tools
Review n8n execution logs

Conclusion

The choice between approaches depends on your specific requirements:
Simple AI Agent**: Perfect for straightforward AI integration with minimal setup
Dynamic HTTP Workflow**: Ideal for complex requirements with multiple models and advanced features