AI Chatbot Lead Capture Gemini AI Supabase n8n

Build a website AI chatbot with lead capture using Gemini and Supabase RAG

Deploy a fully customizable AI chatbot that can be embedded on any website, from custom-coded sites to platforms like WordPress. The chatbot captures leads while answering visitor questions using your knowledge base.

Download Template JSON · n8n compatible · Free
AI chatbot workflow diagram showing Gemini integration with website

What This Workflow Does

This automation creates an intelligent chatbot that engages website visitors while capturing their contact information. Unlike basic chatbots, it uses Google's Gemini AI combined with Retrieval-Augmented Generation (RAG) from Supabase to provide accurate answers based on your specific business knowledge.

The system automatically saves conversations and lead details to your database, enabling follow-up through your CRM or email marketing platform. It reduces support workload while converting more visitors into qualified leads.

How It Works

1. Visitor Interaction

When a visitor engages with the chatbot widget on your website, their message gets processed by the n8n workflow. The system checks if it's a simple greeting or requires knowledge base lookup.

2. AI Response Generation

For complex queries, the workflow queries your Supabase RAG database to find relevant information. Gemini AI then crafts a natural response combining this data with its general knowledge.

3. Lead Capture

At strategic points in the conversation, the chatbot prompts for contact details. Collected information gets stored securely in Supabase with timestamps and full conversation history.

Who This Is For

This solution benefits businesses that receive frequent website inquiries but lack 24/7 support. It's ideal for:

  • E-commerce stores needing product advice automation
  • Service businesses wanting to qualify leads after hours
  • SaaS companies reducing support ticket volume
  • Agencies offering client websites with built-in AI features

What You'll Need

  1. Google Cloud account with Gemini API access
  2. Supabase project with vector database setup
  3. n8n instance (cloud or self-hosted)
  4. Website to embed the chatbot (any platform)
  5. Optional: CRM integration for lead follow-up

Quick Setup Guide

  1. Download and import the JSON template into your n8n instance
  2. Configure your Gemini API credentials in the workflow
  3. Connect your Supabase database with RAG collections
  4. Add your website domain to CORS settings
  5. Embed the provided chat widget code on your site

Key Benefits

24/7 lead generation: Capture qualified leads even when your team is offline, with full conversation history for context.

Reduced support costs: Automatically answer common questions, freeing staff for complex inquiries.

Higher conversion rates: Engage visitors at the perfect moment with personalized responses.

Easy customization: Train the bot on your specific products, services, and documentation.

No coding required: The template provides everything needed for deployment without developer help.

Pro tip: Start by training your RAG system on customer support tickets and product documentation. This gives the chatbot immediate access to your most valuable knowledge.

Frequently Asked Questions

Common questions about website chatbot integration and automation

AI chatbots provide 24/7 customer support, reduce response times, and capture leads automatically. They handle common queries instantly while collecting visitor information for follow-up. Businesses using chatbots see 30-50% higher lead conversion rates compared to traditional contact forms.

The conversational interface creates a more engaging experience than static forms. Visitors get immediate answers while you gain valuable insights into customer needs through conversation analytics.

  • Available 24/7 without staffing costs
  • Qualifies leads before sales team contact
  • Reduces repetitive support questions

Retrieval-Augmented Generation (RAG) combines AI with your knowledge base for more accurate answers. While standard chatbots give generic responses, RAG-powered bots pull from your documents, FAQs, and product info. This creates tailored answers that reflect your business specifics.

For example, when asked about return policies, a RAG chatbot will cite your actual policy document rather than guessing. The system continuously improves as you add more relevant content to your knowledge base.

  • Reduces hallucinated or incorrect answers
  • Easier to update than retraining entire models
  • Provides sources for verification

E-commerce sites, SaaS companies, and service providers gain the most from AI chatbots. They help qualify leads, recommend products, and handle pre-sales questions. Agencies using chatbots report 40% fewer support tickets as common questions get automated answers.

Businesses with complex products or services see particularly strong results. The chatbot can explain technical details in simple terms while identifying serious buyers through their questions.

  • Best for businesses with frequent customer inquiries
  • Ideal for products needing explanation
  • Perfect for after-hours lead capture

Properly configured chatbots store data securely in databases like Supabase with encryption. The template includes GDPR-compliant data handling. For sensitive industries, you can add additional security layers like data masking before storage.

Unlike some third-party chatbot services, this solution keeps all data within your infrastructure. You maintain full control over access permissions and data retention policies.

  • End-to-end encryption options available
  • No third-party data sharing
  • Compliance controls built-in

Yes, RAG systems let you upload PDFs, documentation, and FAQs to customize responses. The template includes instructions for connecting your knowledge sources. Most businesses see best results when training the bot on support tickets and product manuals.

Start with your most frequently asked questions and expand over time. The system can handle multiple knowledge sources simultaneously, combining information from different documents in its answers.

  • Supports PDFs, Word docs, and plain text
  • Automatic text extraction and indexing
  • Continuous learning as you add content

Gemini offers stronger reasoning and multi-turn conversation abilities compared to older models. It handles complex queries better while maintaining context throughout conversations. Businesses switching to Gemini report 25% higher satisfaction with chatbot answer quality.

The model excels at understanding nuanced questions and providing concise, accurate responses. It's particularly effective when combined with RAG, as it can better interpret and summarize retrieved documents.

  • Better at following conversation context
  • More accurate technical explanations
  • Lower hallucination rates

Absolutely. GrowwStacks specializes in tailored chatbot solutions that integrate with your CRM, helpdesk, and business systems. Our team can build custom workflows with advanced features like payment processing, appointment booking, or multilingual support.

We'll analyze your specific needs to design a chatbot that complements your sales and support processes. Custom solutions typically integrate with 3-5 additional business systems beyond the basic template capabilities.

  • CRM and helpdesk integrations
  • Industry-specific compliance features
  • Advanced analytics and reporting

Need a Custom AI Chatbot Integration?

This free template is a starting point. Our team builds fully tailored automation systems for your specific needs.

Get Free Consultation → Browse More Workflows