# Auto-generate MVP startup ideas from Reddit with Excel: n8n workflow

> Started by someone submitting a form, and works across Excel and Reddit. It hands the judgement calls to OpenRouter.

Source: https://millionrounds.com/workflow/auto-generate-mvp-startup-ideas-from-reddit-with-excel (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Strategy and planning](https://millionrounds.com/workflows?category=Strategy+and+planning#library)

# Auto-generate MVP startup ideas from Reddit with Excel

Started by someone submitting a form, and works across Excel and Reddit. It hands the judgement calls to OpenRouter. 23 steps, 1 loop or waits: large, and worth reading before you trust it with anything live.

Large Calls a model: OpenRouter

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fauto-generate-mvp-startup-ideas-from-reddit-with-excel)

**23 steps** Large: read it before trusting it with anything live

**0** Branches: places the flow splits

**1** Loop or waits

**2** Services it connects to

## The flow

Starts it 1 Model 3 Logic 14 Service 5

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

- 1 **OpenRouter Chat Model** Lm Chat Open Router *Model*
- 2 **Structured Output Parser** Output Parser Structured *Model*
- 3 **Select a subreddit** Form trigger *Starts it*
- 4 **AI powered MVP Generator** Chain Llm *Model*
- 5 **Get used reddit post slugs** Microsoft Excel *Service*
- 6 **Get Trending Posts** Reddit *Service*
- 7 **Split llm output prep for spreadsheet** Split Out *Logic*
- 8 **Flatten list of slugs** Aggregate *Logic*
- 9 **Extract subreddits and post ids** Aggregate *Logic*
- 10 **Create list of posts** Code *Logic*
- 11 **Append new row to Excel sheet** Microsoft Excel *Service*
- 12 **Merge used post slugs with new post slugs** Merge *Logic*
- 13 **Create post slugs** Code *Logic*
- 14 **Merge new post slugs with post data** Merge *Logic*
- 15 **Create list of all post slugs** Code *Logic*
- 16 **Filter out used posts** Code *Logic*
- 17 **Remove duplicate post slugs** Remove Duplicates *Logic*
- 18 **Loop over posts** Split In Batches *Logic*
- 19 **Split out post slugs** Split Out *Logic*
- 20 **Get Comments** Reddit *Service*
- 21 **Merge post with comments** Merge *Logic*
- 22 **Update "Used Posts" with new post slugs** Microsoft Excel *Service*
- 23 **Flatten post and comments** Code *Logic*

## How it's built

- **Starts on:** Someone submitting a form
- **Steps:** 23, 1 loop or waits
- **Size:** Large: read it before trusting it with anything live
- **Connects to:** Excel, Reddit
- **Model:** OpenRouter

## Questions

What does it need to run?

An n8n account, plus your own Excel and Reddit accounts, and a key for OpenRouter. You connect your own accounts after importing it; none are included.

What starts it?

It starts on someone submitting a form.

Does it use AI?

Yes. It calls OpenRouter. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Take your time. At 23 steps it is large: read it before trusting it with anything live.

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 23 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%2Fauto-generate-mvp-startup-ideas-from-reddit-with-excel)
- **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.

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

## Workflows like it

Also strategy and planning, with the same services where possible, closest in size first.

- [**Generate startup ideas from Reddit posts with Gemini** 10 steps · calls a model · Google Sheets, Reddit](https://millionrounds.com/workflow/generate-startup-ideas-from-reddit-posts-with-gemini)