WhatsApp AI Sales Agent using PDF Vector Store

★ 7.3 · n8n · complex · 27 nodes

WhatsApp AI Sales Agent using PDF Vector Store is an n8n automation template that automatically answers customer questions in WhatsApp by querying a vector store built from a PDF document, using GPT-4o as the reasoning model. Reach for it when managers are overwhelmed by repetitive questions about products, pricing, or delivery; when you need instant 24/7 responses without a live agent; when your product catalog or FAQ already exists as a PDF and you want to put it to work immediately. Trigger: webhook — an incoming WhatsApp message fires the workflow, GPT-4o retrieves the relevant passage from the PDF-based vector store, and the answer is sent back to the customer in the same chat. Integrations: WhatsApp, OpenAI. The flow goes from customer question to automated reply — not outbound broadcasting (use a dedicated campaign template for that). Suitable for small and medium businesses with a stable PDF knowledge base; not a good fit when product information changes frequently and the PDF is rarely updated, as answers will become stale. Requires an active n8n instance, an OpenAI API key, and a connected WhatsApp channel.