Automation library · Money admin

Track expenses from phone notifications with Gemini

Started by another system calling it, and works across 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
1Service it connects to

The flow

Starts it 5Model 3Logic 2Service 1

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

  1. 1WebhookWebhookStarts it
  2. 2Structured Output ParserOutput Parser StructuredModel
  3. 3Google Gemini Chat ModelLm Chat Google GeminiModel
  4. 4Extract AmountCodeLogic
  5. 5Categorize ExpenseChain LlmModel
  6. 6Is Expense?IfLogic
  7. 7Google SheetsGoogle SheetsService
  8. 8Respond Error LLMRespond To WebhookStarts it
  9. 9Respond SkippedRespond To WebhookStarts it
  10. 10Respond SuccessRespond To WebhookStarts it
  11. 11Respond Error SheetsRespond To WebhookStarts it

How it's built

Starts on
Another system calling it
Steps
11, 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. 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.