Automation library · Content

Generate Instagram auto-DM comment captions with Gemini

Started by an event in a connected app, and works across Google Sheets. It hands the judgement calls to Gemini. 10 steps: a working afternoon to understand properly.

MediumCalls a model: Gemini

10 stepsMedium: a working afternoon
0Branches: places the flow splits
0Loops or waits
1Service it connects to

The flow

Starts it 1Model 3Logic 4Service 2

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

  1. 1StartManual triggerStarts it
  2. 2Google Gemini Chat ModelLm Chat Google GeminiModel
  3. 3Structured Output ParserOutput Parser StructuredModel
  4. 4Set Niche & KeywordsSetLogic
  5. 5Generate DM CaptionsAgentModel
  6. 6Split Out CaptionsSplit OutLogic
  7. 7Format Error LogSetLogic
  8. 8Format Row for SheetSetLogic
  9. 9Log Error to SheetGoogle SheetsService
  10. 10Save Caption to SheetGoogle SheetsService

How it's built

Starts on
An event in a connected app
Steps
10
Size
Medium: a working afternoon
Connects to
Google Sheets
Model
Gemini

Questions

What does it need to run?

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

What starts it?

It starts on an event in a connected app.

Does it use AI?

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

How long does it take to set up?

Plan an afternoon. 10 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 10 steps before you point it at anything that matters.