Automation library · AI assistants

Build a multi-knowledge base RAG chat assistant with Supabase

Started by someone opening a chat with it, and works across Supabase vectors. It puts a local model behind a retrieval step, so answers are drawn from documents you supply rather than from the model alone. 12 steps: a working afternoon to understand properly.

MediumCalls a model: a local modelRetrieval

12 stepsMedium: a working afternoon
0Branches: places the flow splits
0Loops or waits
1Service it connects to

The flow

Starts it 2Model 9Logic 1

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

  1. 1When Chat InitiatedChat triggerStarts it
  2. 2Select Ollama ModelLm Chat OllamaModel
  3. 3Build Primary EmbeddingsEmbeddings OllamaModel
  4. 4Build Reference EmbeddingsEmbeddings OllamaModel
  5. 5Build Additional EmbeddingsEmbeddings OllamaModel
  6. 6Store Chat History in PostgresMemory Postgres ChatModel
  7. 7When Error OccursError triggerStarts it
  8. 8RAG AssistantAgentModel
  9. 9Primary Knowledge BaseVector Store SupabaseModel
  10. 10Reference Knowledge BaseVector Store SupabaseModel
  11. 11Additional Knowledge BaseVector Store SupabaseModel
  12. 12Build Error SummarySetLogic

How it's built

Starts on
Someone opening a chat with it
Steps
12
Size
Medium: a working afternoon
Connects to
Supabase vectors
Model
a local model
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 Supabase vectors account, and a key for a local model. 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 a local model. 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. 12 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 12 steps before you point it at anything that matters.