Automation library · Money admin

Log LINE invoice photos to Google Sheets with OCR.space

Started by another system calling it, and works across Google Sheets. It hands the judgement calls to Gemini. 15 steps, 2 branches: a working afternoon to understand properly.

MediumCalls a model: Gemini

Download free
15 stepsMedium: a working afternoon
2Branches: places the flow splits
0Loops or waits
1Service it connects to

The flow

Starts it 2Model 2Logic 5Service 6

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

  1. 1Google Gemini Chat ModelLm Chat Google GeminiModel
  2. 2Receive LINE WebhookWebhookStarts it
  3. 3AI Agent - Parse Invoice with GeminiAgentModel
  4. 4Return 200 OK to LINERespond To WebhookStarts it
  5. 5Variables (API Key Management)SetLogic
  6. 6Parse & Format JSONCodeLogic
  7. 7Check Image MessageIfLogic
  8. 8Error CheckIfLogic
  9. 9Fetch Image from LINEHttp RequestService
  10. 10LINE Reply - Not an ImageHttp RequestService
  11. 11Append to Google SheetsGoogle SheetsService
  12. 12LINE Reply - ErrorHttp RequestService
  13. 13Convert Image to Base64CodeLogic
  14. 14LINE Reply - SuccessHttp RequestService
  15. 15OCR - Extract Text from ImageHttp RequestService

How it's built

Starts on
Another system calling it
Steps
15, with 2 branches
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. 15 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 15 steps before you point it at anything that matters.