# Reddit bot automation: AI auto-reply & post monitor: n8n workflow

> Started by a clock, and works across Google Sheets and Reddit. It hands the judgement calls to OpenAI.

Source: https://millionrounds.com/workflow/reddit-bot-automation-ai-auto-reply-and-post-monitor (Millionrounds; every figure on the page links to its filing or article)

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

# Reddit bot automation: AI auto-reply & post monitor

Started by a clock, and works across Google Sheets and Reddit. It hands the judgement calls to OpenAI. 16 steps, 2 branches: a working afternoon to understand properly.

Medium Calls a model: OpenAI

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Freddit-bot-automation-ai-auto-reply-and-post-monitor)

**16 steps** Medium: a working afternoon

**2** Branches: places the flow splits

**0** Loops or waits

**2** Services it connects to

## The flow

Starts it 2 Model 3 Logic 4 Service 7

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

- 1 **When clicking ‘Test workflow’** Manual trigger *Starts it*
- 2 **OpenAI Chat Model** Lm Chat Open Ai *Model*
- 3 **Trigger: Run every 3 hours** Schedule trigger *Starts it*
- 4 **Get Posts** Reddit *Service*
- 5 **Get Posts1** Reddit *Service*
- 6 **Get Posts2** Reddit *Service*
- 7 **Get Posts3** Reddit *Service*
- 8 **Get Posts4** Reddit *Service*
- 9 **Analysis Content By AI** Agent *Model*
- 10 **Filter Posts By Features** If *Logic*
- 11 **Merge Input** Merge *Logic*
- 12 **Select Key Fields** Set *Logic*
- 13 **Filter Posts By Content** If *Logic*
- 14 **Message a model** Open Ai *Model*
- 15 **Create a comment in a post** Reddit *Service*
- 16 **Append row in sheet** Google Sheets *Service*

## How it's built

- **Starts on:** A clock
- **Steps:** 16, with 2 branches
- **Size:** Medium: a working afternoon
- **Connects to:** Google Sheets, Reddit
- **Model:** OpenAI

## Questions

What does it need to run?

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

What starts it?

It starts on a clock.

Does it use AI?

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

How long does it take to set up?

Plan an afternoon. 16 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 16 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%2Freddit-bot-automation-ai-auto-reply-and-post-monitor)
- **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.

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

## Workflows like it

Also alerts and monitoring, with the same services where possible, closest in size first.

- [**AI Weather Monitoring with OpenWeatherMap and Gemini** 16 steps · calls a model · Google Sheets, Slack](https://millionrounds.com/workflow/ai-weather-monitoring-with-openweathermap-and-gemini)
- [**Automate RSS content with OpenAI and Google Sheets** 16 steps · calls a model · Google Sheets, RSS](https://millionrounds.com/workflow/automate-rss-content-with-openai-and-google-sheets)
- [**Automate website monitoring with OpenAI and MCP** 16 steps · calls a model · Email, Google Sheets](https://millionrounds.com/workflow/automate-website-monitoring-with-openai-and-mcp)
- [**Automated SEO ranking monitor with Decodo** 16 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/automated-seo-ranking-monitor-with-decodo)
- [**Automated SEO ranking monitor, Decodo scraper & multi-channel** 16 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/automated-seo-ranking-monitor-decodo-scraper-and-multi-chann)
- [**Automated email triage with Gmail and OpenAI** 16 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/automated-email-triage-with-gmail-and-openai)