# Reindex markdown RAG chunks with Supabase: n8n workflow

> Started by another system calling it, and works across Postgres. 9 steps, 1 loop or waits: a working afternoon to understand properly.

Source: https://millionrounds.com/workflow/reindex-markdown-rag-chunks-with-supabase (Millionrounds; every figure on the page links to its filing or article)

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

# Reindex markdown RAG chunks with Supabase

Started by another system calling it, and works across Postgres. 9 steps, 1 loop or waits: a working afternoon to understand properly.

Medium

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Freindex-markdown-rag-chunks-with-supabase)

**9 steps** Medium: a working afternoon

**0** Branches: places the flow splits

**1** Loop or waits

**1** Service it connects to

## The flow

Starts it 2 Logic 3 Service 4

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

- 1 **Schedule: Daily Reindex** Schedule trigger *Starts it*
- 2 **Deploy Webhook** Webhook *Starts it*
- 3 **Fetch Sources (FAQ + Blog)** Http Request *Service*
- 4 **Chunk and Batch** Code *Logic*
- 5 **Loop Batches** Split In Batches *Logic*
- 6 **Delete Stale Chunks** Postgres *Service*
- 7 **Embed Batch (Supabase)** Http Request *Service*
- 8 **Build Upsert SQL** Code *Logic*
- 9 **Upsert Chunks** Postgres *Service*

## How it's built

- **Starts on:** Another system calling it
- **Steps:** 9, 1 loop or waits
- **Size:** Medium: a working afternoon
- **Connects to:** Postgres
- **Model:** None. This is plumbing, not judgement

## Questions

What does it need to run?

An n8n account, plus your own Postgres account. 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?

No. Every step is fixed logic or a call to a service, so it does the same thing every time.

How long does it take to set up?

Plan an afternoon. 9 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 9 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%2Freindex-markdown-rag-chunks-with-supabase)
- **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.

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

## Workflows like it

Also data collection, with the same services where possible, closest in size first.

- [**Scraping last 24 hours tweets from twitter users with Postgres** 8 steps · Postgres](https://millionrounds.com/workflow/scraping-last-24-hours-tweets-from-twitter-users-with-postgr)
- [**AI-powered Asana task prioritization with OpenAI and Pinecone** 10 steps · calls a model · Asana, Pinecone](https://millionrounds.com/workflow/ai-powered-asana-task-prioritization-with-openai-and-pinecon)
- [**AI-powered customer feedback analyzer with OpenAI and Postgres** 10 steps · calls a model · Postgres](https://millionrounds.com/workflow/ai-powered-customer-feedback-analyzer-with-openai-and-postgr)
- [**Demand forecasting with OpenAI and Postgres** 8 steps · calls a model · Postgres](https://millionrounds.com/workflow/demand-forecasting-with-openai-and-postgres)
- [**Detect influencer fraud and fake followers with Instagram** 7 steps · Email, Postgres](https://millionrounds.com/workflow/detect-influencer-fraud-and-fake-followers-with-instagram)
- [**Gmail hooks – convert Gmail emails into n8n webhook events** 11 steps · Gmail, Postgres](https://millionrounds.com/workflow/gmail-hooks-convert-gmail-emails-into-n8n-webhook-events)