Automation library · Data collection

Index n8n workflows and enable semantic AI search with OpenAI

Started by another system calling it, and works across Supabase and Supabase vectors. It puts OpenAI behind a retrieval step, so answers are drawn from documents you supply rather than from the model alone. 17 steps, 1 loop or waits: a working afternoon to understand properly.

MediumCalls a model: OpenAIRetrieval

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17 stepsMedium: a working afternoon
0Branches: places the flow splits
1Loop or waits
2Services it connects to

The flow

Starts it 3Model 9Logic 3Service 2

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

  1. 1Auto Sync Trigger (24h)Schedule triggerStarts it
  2. 2Prepare DocumentsDocument Default Data LoaderModel
  3. 3Generate EmbeddingsEmbeddings Open AiModel
  4. 4Query Webhook (Ask Workflows)WebhookStarts it
  5. 5LLM Brain (Agent)Lm Chat Open AiModel
  6. 6Query Embeddings GeneratorEmbeddings Open AiModel
  7. 7Tool LLMLm Chat Open AiModel
  8. 8Fetch n8n Workflows APIHttp RequestService
  9. 9Store in Vector DBVector Store SupabaseModel
  10. 10AI Workflow AssistantAgentModel
  11. 11Vector DB SearchVector Store SupabaseModel
  12. 12Workflow Search ToolTool Vector StoreModel
  13. 13Extract Workflow ListSplit OutLogic
  14. 14Process Each WorkflowSplit In BatchesLogic
  15. 15Return AI ResponseRespond To WebhookStarts it
  16. 16Clear Existing VectorsSupabaseService
  17. 17Transform Workflow to ChunksCodeLogic

How it's built

Starts on
Another system calling it
Steps
17, 1 loop or waits
Size
Medium: a working afternoon
Connects to
Supabase, Supabase vectors
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, plus your own Supabase and Supabase vectors accounts, and a key for OpenAI. You connect your own accounts after importing it; none are included.

What starts it?

It starts on another system calling 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. 17 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 17 steps before you point it at anything that matters.