AI WhatsApp Bot with Vector Search & Memory

# WhatsApp AI chatbot for support with file analysis and vector search

This automation enables companies to deploy an intelligent customer support system on WhatsApp capable of handling all message types — text, voice notes, images, and documents. Powered by LangChain and GPT-4o-mini, the bot understands queries, retrieves information from a MongoDB Atlas vector store, and replies with contextual awareness. Ideal for businesses with extensive documentation and high support volume.

## Who it´s for
- Companies offering customer support via WhatsApp
- SaaS products with rich documentation needing automated responses
- Technical support teams handling file-based inquiries
- Marketing teams automating client communication
- Developers implementing AI chatbots with memory and knowledge access

## What the automation does
- Listens for incoming WhatsApp messages of any type: text, audio, images, PDFs, and other documents
- Transcribes audio via OpenAI Whisper, analyzes images, and extracts text from documents
- Combines all inputs into a unified contextual prompt
- Routes the query to a LangChain agent with conversation memory and MongoDB Atlas vector search
- Generates accurate, context-aware responses using GPT-4o-mini
- Sends replies back to WhatsApp in text format
- Supports manual updates of the knowledge base via Google Docs

## What´s included
- Ready-to-use n8n workflow
- Logic for processing all message types (text, audio, images, documents)
- Integrations with WhatsApp, OpenAI API, MongoDB Atlas, Google Docs, and HTTP API
- Dialogue memory and vector search mechanism
- Basic setup and adaptation guide

## Requirements for setup
- n8n account (cloud or self-hosted)
- Access to WhatsApp Business API via provider (e.g., 360dialog)
- OpenAI API key (for transcription and response generation)
- MongoDB Atlas cluster with vector search enabled
- Google Docs containing documentation for knowledge import
- Configured HTTP nodes with Header Auth

## Benefits and outcomes
- Reduces support workload through automated answers to common questions
- Handles file-inclusive queries without manual intervention
- High response accuracy via vector search over documentation
- Preserves conversation context for natural interaction
- Fast knowledge base updates via Google Docs
- Scalability through low-code n8n platform
- Multimodal input support improves user experience

## Important: template only
Important: you are purchasing a ready-made automation workflow template only. Rollout into your infrastructure, connecting specific accounts and services, 1:1 setup help, custom adjustments for non-standard stacks and any consulting support are provided as a separate paid service at an individual rate. To discuss custom work or 1:1 help, contact via chat