n8n Webhook Chatbot: Answer Visitor Questions with Groq

Answer Website Visitor Questions Instantly with an n8n Webhook + Groq Chat Completions

This n8n workflow turns your website into a responsive Q&A assistant: it exposes a POST webhook, accepts a visitor’s message, generates an answer using Groq’s OpenAI-compatible Chat Completions API, and returns the reply as JSON.

What this workflow does

• Receives a visitor message via an n8n Webhook (POST). The incoming request body includes a message field.
• Builds a chat prompt by combining your predefined business “About” text and guidelines with the visitor’s message.
• Generates an assistant response by sending the chat payload to Groq using the Chat Completions endpoint.
• Returns the result to the original webhook call as JSON.

Use cases

• Provide instant answers to FAQs (pricing, services, hours) directly from a website contact form or chat widget.
• Route visitor questions to a branded assistant powered by your business “About” information—without building a separate backend.
• Assist SaaS customers by responding to product questions based on the text you maintain in the workflow prompt.

Technical details

• Nodes/tech stack: Code, Webhook, HTTP Request, Respond to Webhook
• Groq integration: call Groq’s OpenAI-compatible Chat Completions endpoint
• Auth setup: add your Groq API key as an HTTP Header Auth credential and select it in the Groq request step
• Configuration: update the built-in knowledge text and the contact email in the prompt-building code
• Client integration: configure your website/chat widget to POST JSON with a "message" field to the n8n webhook URL

If you’re building n8n automations for conversational support, this webhook-first workflow gives you a clean, JSON-based foundation powered by Groq.