Automation library · AI assistants

Build a cost-efficient Lookio RAG chatbot with OpenAI

Started by someone opening a chat with it. It calls services over plain HTTP rather than through connectors. It puts OpenAI behind a retrieval step, so answers are drawn from documents you supply rather than from the model alone. 13 steps: a working afternoon to understand properly.

MediumCalls a model: OpenAIRetrieval

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13 stepsMedium: a working afternoon
0Branches: places the flow splits
0Loops or waits
0Services by connector: it calls them over plain HTTP

The flow

Starts it 1Model 11Service 1

The steps in the order they run, from what starts it.

  1. 1When chat message receivedChat triggerStarts it
  2. 2Very small modelLm Chat Open AiModel
  3. 3Mini modelLm Chat Open AiModel
  4. 4Large modelLm Chat Open AiModel
  5. 5Simple MemoryMemory Buffer WindowModel
  6. 6Find past messagesMemory ManagerModel
  7. 7Simple responseChain LlmModel
  8. 8Intent routerText ClassifierModel
  9. 9Prepare retrieval queryChain LlmModel
  10. 10Write the final responseChain LlmModel
  11. 11Store messagesMemory ManagerModel
  12. 12Respond to ChatChatModel
  13. 13RAG via LookioHttp RequestService

How it's built

Starts on
Someone opening a chat with it
Steps
13
Size
Medium: a working afternoon
Connects to
Nothing by connector; it calls services over plain HTTP
Model
OpenAI
Retrieval
Answers are drawn from documents you supply, not from the model alone

Questions

What does it need to run?

An n8n account, and a key for OpenAI. You connect your own accounts after importing it; none are included.

What starts it?

It starts on someone opening a chat with it.

Does it use AI?

Yes. It calls OpenAI. Its answers draw on documents you give it, not on the model alone. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Plan an afternoon. 13 steps is enough that you should read each one before running it.

How do I import it?

Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.

Before you run it

Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 13 steps before you point it at anything that matters.