# Turn a YouTube channel into a second brain with Neo4j GraphRAG: n8n workflow

> Started by someone opening a chat with it, and works across Apify. It puts OpenRouter behind a retrieval step, so answers are drawn from documents you...

Source: https://millionrounds.com/workflow/turn-a-youtube-channel-into-a-second-brain-with-neo4j-graphr (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [AI assistants](https://millionrounds.com/workflows?category=AI+assistants#library)

# Turn a YouTube channel into a second brain with Neo4j GraphRAG

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

Medium Calls a model: OpenRouter Retrieval

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fturn-a-youtube-channel-into-a-second-brain-with-neo4j-graphr)

**19 steps** Medium: a working afternoon

**1** Branch: places the flow splits

**1** Loop or waits

**1** Service it connects to

## The flow

Starts it 2 Model 10 Logic 2 Service 5

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

- 1 **4.1 mini** Lm Chat Open Router *Model*
- 2 **4o mini** Lm Chat Open Router *Model*
- 3 **sonnet 3.5** Lm Chat Open Router *Model*
- 4 **When chat message received** Chat trigger *Starts it*
- 5 **4o** Lm Chat Open Router *Model*
- 6 **sonnet 4.5** Lm Chat Open Router *Model*
- 7 **Simple Memory** Memory Buffer Window *Model*
- 8 **neo4j_query** Http Request Tool *Service*
- 9 **Wich creator? How many videos?** Form trigger *Starts it*
- 10 **Parseur** Output Parser Structured *Model*
- 11 **Catégorie définition Agent** Agent *Model*
- 12 **AI Agent** Agent *Model*
- 13 **Get channel videos URLs** Apify *Service*
- 14 **Vers Neo4j** Http Request *Service*
- 15 **Respond to Chat** Chat *Model*
- 16 **loop each video** Split In Batches *Logic*
- 17 **Results** Form *Service*
- 18 **Scraping of each URLs** Apify *Service*
- 19 **If** If *Logic*

## How it's built

- **Starts on:** Someone opening a chat with it
- **Steps:** 19, with 1 branch, 1 loop or waits
- **Size:** Medium: a working afternoon
- **Connects to:** Apify
- **Model:** OpenRouter
- **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 Apify account, and a key for OpenRouter. 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 OpenRouter. 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.

## Run it in n8n

- **Create your n8n account** Free to start. n8n is where the workflow runs. [Create an n8n account ↗](https://millionrounds.com/n8n)
- **Download the workflow** Free with a Millionrounds account. [Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fturn-a-youtube-channel-into-a-second-brain-with-neo4j-graphr)
- **Paste it into n8n** Open a new workflow in n8n and paste. Then connect your own accounts.

Stored with the author's traces removed: canvas notes, instance identifiers, saved credential names and any live document they had left behind.

## Connects to

Each opens the other workflows that use it.

[Apify](https://millionrounds.com/workflows?service=Apify#library)

## Workflows like it

Also ai assistants, with the same services where possible, closest in size first.

- [**Plan AI-powered travel itineraries with Apify and OpenAI** 15 steps · calls a model · Apify, Google Docs](https://millionrounds.com/workflow/plan-ai-powered-travel-itineraries-with-apify-and-openai)
- [**Build a company website RAG chatbot with Apify and Pinecone** 14 steps · calls a model · Apify, Pinecone](https://millionrounds.com/workflow/build-a-company-website-rag-chatbot-with-apify-and-pinecone)
- [**Auto-approve Skool community members with OpenAI** 11 steps · calls a model · Apify](https://millionrounds.com/workflow/auto-approve-skool-community-members-with-openai)
- [**Generate recipe PDFs from food photos with OpenRouter** 9 steps · calls a model · Apify, Google Drive](https://millionrounds.com/workflow/generate-recipe-pdfs-from-food-photos-with-openrouter)
- [**Generate personalized anime recommendations from MyAnimeList** 5 steps · calls a model · Apify](https://millionrounds.com/workflow/generate-personalized-anime-recommendations-from-myanimelist)