Automation library · Money admin

Extract and validate invoice data with Gemini

Started by someone opening a chat with it, and works across Gmail and Google Sheets. It hands the judgement calls to Gemini. 11 steps, 1 branch: a working afternoon to understand properly.

MediumCalls a model: Gemini

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11 stepsMedium: a working afternoon
1Branch: places the flow splits
0Loops or waits
2Services it connects to

The flow

Starts it 1Model 1Logic 4Service 5

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

  1. 1When chat message receivedChat triggerStarts it
  2. 2Analyze documentGoogle GeminiModel
  3. 3Code in JavaScriptCodeLogic
  4. 4Get row(s) in sheetGoogle SheetsService
  5. 5Code in JavaScript1CodeLogic
  6. 6IfIfLogic
  7. 7Append row in sheetGoogle SheetsService
  8. 8Code in JavaScript2CodeLogic
  9. 9SummarizeSummarizeService
  10. 10Format Duplicate AlertGmailService
  11. 11Send a messageGmailService

How it's built

Starts on
Someone opening a chat with it
Steps
11, with 1 branch
Size
Medium: a working afternoon
Connects to
Gmail, Google Sheets
Model
Gemini

Questions

What does it need to run?

An n8n account, plus your own Gmail and Google Sheets accounts, and a key for Gemini. 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 Gemini. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Plan an afternoon. 11 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 11 steps before you point it at anything that matters.