Automation library · Content

Create & Publish Instagram Carousel Posts with OpenAI

Started by a clock, and works across Google Sheets and in-memory vectors. It puts OpenAI and OpenRouter behind a retrieval step, so answers are drawn from documents you supply rather than from the model alone. 17 steps: a working afternoon to understand properly.

MediumCalls a model: OpenAI, OpenRouterRetrieval

17 stepsMedium: a working afternoon
0Branches: places the flow splits
0Loops or waits
2Services it connects to

The flow

Starts it 2Model 9Logic 2Service 4

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

  1. 1Schedule TriggerSchedule triggerStarts it
  2. 2When clicking ‘Test workflow’Manual triggerStarts it
  3. 3OpenAI Chat ModelLm Chat Open AiModel
  4. 4Embeddings OpenAIEmbeddings Open AiModel
  5. 5Simple MemoryMemory Buffer WindowModel
  6. 6OpenRouter Chat ModelLm Chat Open RouterModel
  7. 7generate search termCodeLogic
  8. 8AI AgentAgentModel
  9. 9Simple Vector StoreVector Store In MemoryModel
  10. 10Simple Vector Store1Vector Store In MemoryModel
  11. 11Answer questions with a vector storeTool Vector StoreModel
  12. 12Parsear JSON InicialCodeLogic
  13. 13save in sheetsGoogle SheetsService
  14. 14generate imageOpen AiModel
  15. 15upload image to imgurHttp RequestService
  16. 16create containerHttp RequestService
  17. 17POst to instagramHttp RequestService

How it's built

Starts on
A clock
Steps
17
Size
Medium: a working afternoon
Connects to
Google Sheets, in-memory vectors
Model
OpenAI, OpenRouter
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 Google Sheets and in-memory vectors accounts, and a key for OpenAI and OpenRouter. 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 and OpenRouter. 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. 17 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 17 steps before you point it at anything that matters.