Automation library · Money admin

Parse invoices & documents with Gemini and OCR

Started by another system calling it, and works across Google Sheets. It hands the judgement calls to Gemini. 10 steps, 1 branch: a working afternoon to understand properly.

MediumCalls a model: Gemini

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

The flow

Starts it 1Model 2Logic 2Service 5

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

  1. 1Google Gemini Chat ModelLm Chat Google GeminiModel
  2. 2Webhook Invoice uploadWebhookStarts it
  3. 3Format data from textChain LlmModel
  4. 4Check file typeSwitchLogic
  5. 5Transfrom dataCodeLogic
  6. 6Image to TextTesseract NodeService
  7. 7PDF to TextExtract From FileService
  8. 8CSV to JSONExtract From FileService
  9. 9Invoice DataGoogle SheetsService
  10. 10Invoice dataGoogle SheetsService

How it's built

Starts on
Another system calling it
Steps
10, with 1 branch
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 another system calling 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. 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.