Automation library · Lead generation

Build a website AI chatbot with Gemini and Supabase RAG

Started by someone opening a chat with it, and works across Google Drive, Supabase and Supabase vectors. It puts Gemini and OpenAI behind a retrieval step, so answers are drawn from documents you supply rather than from the model alone. 19 steps, 1 loop or waits: a working afternoon to understand properly.

MediumCalls a model: Gemini, OpenAIRetrieval

Download free
19 stepsMedium: a working afternoon
0Branches: places the flow splits
1Loop or waits
3Services it connects to

The flow

Starts it 3Model 11Logic 3Service 2

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

  1. 1Google Gemini Chat ModelLm Chat Google GeminiModel
  2. 2Google Drive TriggerGoogle Drive triggerStarts it
  3. 3Google Drive Trigger1Google Drive triggerStarts it
  4. 4Recursive Character Text SplitterText Splitter Recursive Character Text SplitterModel
  5. 5Embeddings OpenAIEmbeddings Open AiModel
  6. 6ThinkTool ThinkModel
  7. 7CalculatorTool CalculatorModel
  8. 8conversation bufferMemory Buffer WindowModel
  9. 9When chat message receivedChat triggerStarts it
  10. 10Code ToolTool CodeModel
  11. 11Support AgentAgentModel
  12. 12Set the fields for mappingSetLogic
  13. 13Default Data LoaderDocument Default Data LoaderModel
  14. 14Supabase Vector StoreVector Store SupabaseModel
  15. 15KnowledgebaseVector Store SupabaseModel
  16. 16Data NormalizerCodeLogic
  17. 17Deletes old recordsSupabaseService
  18. 18Loop Over ItemsSplit In BatchesLogic
  19. 19Download fileGoogle DriveService

How it's built

Starts on
Someone opening a chat with it
Steps
19, 1 loop or waits
Size
Medium: a working afternoon
Connects to
Google Drive, Supabase, Supabase vectors
Model
Gemini, OpenAI
Retrieval
Answers are drawn from documents you supply, not from the model alone

Questions

What does it need to run?

An n8n account, plus your own Google Drive, Supabase and Supabase vectors accounts, and a key for Gemini and 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 Gemini and 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. 19 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 19 steps before you point it at anything that matters.