AI-Powered WhatsApp Chatbot with Venom Bot & Google Gemini (No Official API)

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Creator: @obisdev

This workflow powers a fully automated WhatsApp chatbot using a self-hosted Venom Bot instead of the official WhatsApp Business API. It integrates Google Gemini AI to generate intelligent, conversational responses and optionally pulls factual information from a Google Docs-based knowledge base. Designed for small businesses and creators, the bot can maintain contextual memory across messages and act as a smart virtual assistant for sales, support, and lead generation.

Overview

This n8n workflow connects with a custom-hosted Venom Bot that simulates WhatsApp Web to send and receive messages. It uses a Webhook trigger to receive incoming messages, processes them with an AI Agent powered by Gemini, optionally pulls extra data from a Google Doc or Google Sheet, and sends a smart reply back through the Venom Bot. The workflow also includes a memory system to retain user context, making it capable of handling follow-up questions and dynamic conversations.

Who this workflow is for

Small Business Owners:
Offer 24/7 customer service on WhatsApp without paying for Meta’s Business API.

Freelancers & Developers:
Build, test, and monetize intelligent bots without the approval process of WhatsApp’s API.

Online Sellers & Creators:
Handle FAQs, orders, and customer inquiries via WhatsApp on autopilot.

Marketers:
Deploy campaign bots that respond to DMs with personalized product suggestions or lead captures.

Hackers & Builders:
Experiment with unofficial APIs to control WhatsApp reliably without breaking TOS for small-scale use.

Tools Used
n8n: The automation platform managing flow, context, and decision logic.

Venom Bot: A Node.js-based, self-hosted WhatsApp Web bot used to send/receive messages.

Google Gemini: AI engine for generating context-aware replies.

Google Docs (Optional): Acts as a structured knowledge base for business info or FAQs.

Google Sheets (Optional): Feeds real-time or structured data into your AI responses.

How to Install

Import the Workflow: Download the .json and import it into your n8n instance.

Set Up Venom Bot: Deploy Venom Bot (on VPS or local) and set it to send messages to your Webhook URL.

Webhook Configuration: Update the Webhook node in n8n and set 'Respond' to "Using Respond to Webhook Node".

Connect Google Gemini: Add your Gemini API key in n8n credentials.

Set Up Google Docs (Optional): Link the document containing your knowledge base.

Enable Conversational Memory: Use ={{ $("Process Message").first().json.from }} as the session ID.

Check API Key Matching: Ensure the API_SECRET_KEY in Venom .env matches the authorization header in n8n.

Customize Persona & Prompts: Update the AI Agent system message to fit your brand tone.

Use Cases
Customer service without WhatsApp Business API

Smart lead generation bots

E-commerce order responders

AI-powered chatbot for DMs

FAQ responder with knowledge base support

Connect with Me
Email: [email protected]
Twitter/X: @obisdev
GitHub: github.com/obisdev
Visit: obisdev.vercel.app

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