# Control your 3D printer with OpenAI and OctoPrint API: n8n workflow

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

Source: https://millionrounds.com/workflow/control-your-3d-printer-with-openai-and-octoprint-api (Millionrounds; every figure on the page links to its filing or article)

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

# Control your 3D printer with OpenAI and OctoPrint API

Started by someone opening a chat with it, and works across Discord. It puts OpenAI behind a retrieval step, so answers are drawn from documents you supply rather than from the model alone. 16 steps: a working afternoon to understand properly.

Medium Calls a model: OpenAI Retrieval

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fcontrol-your-3d-printer-with-openai-and-octoprint-api)

**16 steps** Medium: a working afternoon

**0** Branches: places the flow splits

**0** Loops or waits

**1** Service it connects to

## The flow

Starts it 2 Model 3 Service 11

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 **Simple Memory** Memory Buffer Window *Model*
- 4 **When chat message received** Chat trigger *Starts it*
- 5 **List OctoPrint Jobs** Http Request Tool *Service*
- 6 **Get OctoPrint Printer Status** Http Request Tool *Service*
- 7 **Pause OctoPrint Job** Http Request Tool *Service*
- 8 **Cancel OctoPrint Job** Http Request Tool *Service*
- 9 **Resume OctoPrint Job** Http Request Tool *Service*
- 10 **Connect OctoPrint to Printer** Http Request Tool *Service*
- 11 **Get OctoPrint Printer Connection Status** Http Request Tool *Service*
- 12 **Start OctoPrint Job** Http Request Tool *Service*
- 13 **Get Current Print Job Details** Http Request Tool *Service*
- 14 **Stage OctoPrint Job** Http Request *Service*
- 15 **AI Agent** Agent *Model*
- 16 **Discord** Discord *Service*

## How it's built

- **Starts on:** Someone opening a chat with it
- **Steps:** 16
- **Size:** Medium: a working afternoon
- **Connects to:** Discord
- **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 Discord account, and a key for OpenAI. 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 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. 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%2Fcontrol-your-3d-printer-with-openai-and-octoprint-api)
- **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.

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

## Workflows like it

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

- [**Run a margin-aware paid AI agent with Alephant and Discord** 15 steps · calls a model · Discord](https://millionrounds.com/workflow/run-a-margin-aware-paid-ai-agent-with-alephant-and-discord)
- [**Send weekly news digest from Google News to Discord** 15 steps · calls a model · Discord, n8n data table](https://millionrounds.com/workflow/send-weekly-news-digest-from-google-news-to-discord)
- [**Triage Gmail and draft replies with EdenAI** 15 steps · calls a model · Discord, Gmail](https://millionrounds.com/workflow/triage-gmail-and-draft-replies-with-edenai)
- [**Generate AI-curated Reddit digests for Telegram, Discord & Slack** 14 steps · calls a model · Discord, Slack](https://millionrounds.com/workflow/generate-ai-curated-reddit-digests-for-telegram-discord-and-)
- [**Reply to LinkedIn messages with OpenAI** 14 steps · calls a model · Discord](https://millionrounds.com/workflow/reply-to-linkedin-messages-with-openai)
- [**Analyze trending cryptocurrencies from CoinMarketCap** 13 steps · calls a model · Discord](https://millionrounds.com/workflow/analyze-trending-cryptocurrencies-from-coinmarketcap)