# Create and post social media image captions with OpenAI: n8n workflow

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

Source: https://millionrounds.com/workflow/create-and-post-social-media-image-captions-with-openai (Millionrounds; every figure on the page links to its filing or article)

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

# Create and post social media image captions with OpenAI

Started by a clock, and works across Google Sheets, LinkedIn and X. It hands the judgement calls to OpenAI. 19 steps, 1 branch, 2 loops or waits: a working afternoon to understand properly.

Medium Calls a model: OpenAI

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fcreate-and-post-social-media-image-captions-with-openai)

**19 steps** Medium: a working afternoon

**1** Branch: places the flow splits

**2** Loops or waits

**3** Services it connects to

## The flow

Starts it 2 Model 1 Logic 4 Service 12

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

- 1 **When clicking ‘Execute workflow’** Manual trigger *Starts it*
- 2 **Schedule social media posts** Schedule trigger *Starts it*
- 3 **Post Topic** Set *Logic*
- 4 **get sheet data** Google Sheets *Service*
- 5 **Generate Caption** Open Ai *Model*
- 6 **Loop Over Items** Split In Batches *Logic*
- 7 **Append row in sheet** Google Sheets *Service*
- 8 **Route** Switch *Logic*
- 9 **Instagram IMG** Facebook Graph Api *Service*
- 10 **Get Media2** Http Request *Service*
- 11 **Post Facebook Img** Http Request *Service*
- 12 **Get Media** Http Request *Service*
- 13 **Wait** Wait *Logic*
- 14 **Post X Img** Http Request *Service*
- 15 **Facebook Post** Facebook Graph Api *Service*
- 16 **Linkedin Post** Linked In *Service*
- 17 **Instagram Post** Facebook Graph Api *Service*
- 18 **Create Tweet** Twitter *Service*
- 19 **Update Sheet** Google Sheets *Service*

## How it's built

- **Starts on:** A clock
- **Steps:** 19, with 1 branch, 2 loops or waits
- **Size:** Medium: a working afternoon
- **Connects to:** Google Sheets, LinkedIn, X
- **Model:** OpenAI

## Questions

What does it need to run?

An n8n account, plus your own Google Sheets, LinkedIn and X 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. 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%2Fcreate-and-post-social-media-image-captions-with-openai)
- **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)[LinkedIn](https://millionrounds.com/workflows?service=LinkedIn#library)[X](https://millionrounds.com/workflows?service=X#library)

## Workflows like it

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

- [**AI News to LinkedIn: Daily Content Engine with Slack Approval** 19 steps · calls a model · Google Sheets, LinkedIn](https://millionrounds.com/workflow/ai-news-to-linkedin-daily-content-engine-with-slack-approval)
- [**AI Podcast Repurposing Engine with LinkedIn and Instagram** 19 steps · calls a model · Google Sheets](https://millionrounds.com/workflow/ai-podcast-repurposing-engine-with-linkedin-and-instagram)
- [**AI-powered social media amplifier with OpenAI and Airtable** 19 steps · calls a model · Airtable, LinkedIn](https://millionrounds.com/workflow/ai-powered-social-media-amplifier-with-openai-and-airtable)
- [**Auto-generate Instagram, Facebook & LinkedIn posts** 19 steps · calls a model · Google Sheets](https://millionrounds.com/workflow/auto-generate-instagram-facebook-and-linkedin-posts)
- [**Automate ASMR video creation and distribution with FalAI** 19 steps · calls a model · Google Sheets](https://millionrounds.com/workflow/automate-asmr-video-creation-and-distribution-with-falai)
- [**Automate YouTube thumbnail creation & social publishing** 19 steps · calls a model · Gmail, Google Drive](https://millionrounds.com/workflow/automate-youtube-thumbnail-creation-and-social-publishing)