Automation library · Content

Generate newsletter images with Nano Banana

Started by a change in a Google Sheet, and works across Google Sheets, Telegram and X. It hands the judgement calls to OpenAI. 19 steps, 2 branches, 1 loop or waits: a working afternoon to understand properly.

MediumCalls a model: OpenAI

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19 stepsMedium: a working afternoon
2Branches: places the flow splits
1Loop or waits
3Services it connects to

The flow

Starts it 1Model 4Logic 3Service 11

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

  1. 1OpenAI Chat ModelLm Chat Open AiModel
  2. 2Google Sheets TriggerGoogle Sheets triggerStarts it
  3. 3OpenAI Chat Model1Lm Chat Open AiModel
  4. 4Prompt GeneratorAgentModel
  5. 5Tweet GeneratorAgentModel
  6. 6Image Gen (Nano Banana)Http RequestService
  7. 7Download ImageHttp RequestService
  8. 8Wait1WaitLogic
  9. 9Send Tweet image for approvalTelegramService
  10. 10Get ImageHttp RequestService
  11. 11Send Tweet text for approvalTelegramService
  12. 12Image createdIfLogic
  13. 13ApprovedIfLogic
  14. 14Add Image URLGoogle SheetsService
  15. 15Downlaod Image againHttp RequestService
  16. 16Tweet not approvedGoogle SheetsService
  17. 17post mediaHttp RequestService
  18. 18Create TweetTwitterService
  19. 19Tweet postedGoogle SheetsService

How it's built

Starts on
A change in a Google Sheet
Steps
19, with 2 branches, 1 loop or waits
Size
Medium: a working afternoon
Connects to
Google Sheets, Telegram, X
Model
OpenAI

Questions

What does it need to run?

An n8n account, plus your own Google Sheets, Telegram 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 change in a Google Sheet.

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.