WhatsApp support bot with Google Drive RAG, GPT-4.1-mini and Cohere reranking

WhatsApp RAG Agent (Text + Voice) with Weekly Google Drive Sync

One-line summary : Answers WhatsApp in under 100 words, understands voice notes, and retrieves trusted answers from your Google Drive docs (RAG) kept fresh weekly.

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What this template does

Reply to WhatsApp messages in a polite, human tone with ≤100 words. Understands text and voice notes: auto-downloads audio and transcribes to text. Retrieves answers from your knowledge base (RAG): Google Drive docs → chunk → embed → store in Supabase → rerank with Cohere. Keeps short-term memory across the conversation to avoid repetition. Weekly doc sync from a selected Google Drive folder so non-technical staff can update content without touching n8n.

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Why it matters

Zero busywork: Update a Google Doc; the bot learns it on the next sync. Trustworthy answers: Responses come from your vetted docs, not random web text. Voice-first friendly: Handles the WhatsApp reality of “send a voice note.” Safer by design: Guardrails—no pricing unless in KB, no pushy sales, no medical advice.