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n8n integration for RAG workflows

Connect Biel.ai to your n8n workflows to add intelligent document retrieval and question-answering capabilities. Use your indexed documentation as a knowledge base for chatbots, support automation, Slack bots, and custom AI workflows.

This integration enables Retrieval-Augmented Generation (RAG) in n8n, allowing your automations to search and cite your documentation when answering questions or processing requests.

What you can build​

Common use cases for Biel.ai in n8n workflows:

  • Support chatbots: Answer customer questions using your documentation
  • Slack/Discord bots: Provide instant answers from your knowledge base
  • Email automation: Generate responses with context from your docs
  • Internal tools: Build custom AI assistants for your team
  • Content generation: Pull relevant documentation for blog posts or guides
  • API documentation bots: Help developers find API information quickly
API Access Required

This integration requires API access, which is available on Professional, Business, and Enterprise plans. Upgrade your plan to get started.

Prerequisites​

Before starting, ensure you have:

  • Biel.ai account with documentation indexed (create account)
  • Professional, Business, or Enterprise plan for API access
  • n8n instance (cloud or self-hosted)
  • Project ID from your Biel.ai dashboard
  • API key from your team settings

Setup: Get AI-powered answers​

This workflow uses Biel.ai's chat endpoint to get AI-generated answers with citations from your documentation.

1. Create a new workflow​

In n8n, create a new workflow and add the following nodes:

  1. Trigger node (e.g., Webhook, Manual, Slack)
  2. HTTP Request node to query Biel.ai
  3. Output node to return results

2. Configure the HTTP Request node​

Add an HTTP Request node with these settings:

Method: POST

URL: https://app.biel.ai/api/v1/projects/YOUR_PROJECT_ID/chat/

Replace YOUR_PROJECT_ID with your project ID from the Biel.ai dashboard.

Headers:

{
  "Content-Type": "application/json",
  "Authorization": "Api-Key YOUR_API_KEY"
}

Replace YOUR_API_KEY with your API key from your Biel.ai team settings.

Body (JSON):

{
  "messages": [
    {
      "role": "user",
      "content": "={{ $json.question }}"
    }
  ]
}

For complete API documentation, see Biel.ai REST API.

3. Process the response​

The chat API returns a structured response:

{
  "answer": "AI-generated answer based on your documentation...",
  "sources": [
    {
      "title": "Source page title",
      "url": "https://docs.example.com/source",
      "content": "Relevant excerpt..."
    }
  ],
  "chat_uuid": "unique-conversation-id"
}

4. Continue the conversation (optional)​

To maintain context in multi-turn conversations, include the chat_uuid:

{
  "messages": [
    {
      "role": "user",
      "content": "={{ $json.question }}"
    }
  ],
  "chat_uuid": "={{ $json.previousChatId }}"
}

Need help? Contact us to discuss your workflow.