Automation library · Money admin

Multi-modal expense tracking with Telegram and Gemini

Started by an incoming Telegram message, and works across Google Sheets and Telegram. It hands the judgement calls to Gemini. 20 steps, 2 branches: a working afternoon to understand properly.

MediumCalls a model: Gemini

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

The flow

Starts it 1Model 6Logic 7Service 6

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

  1. 1LLM: Gemini FlashLm Chat Google GeminiModel
  2. 2AI Helper: Define SchemaOutput Parser StructuredModel
  3. 3Start: On Telegram MessageTelegram triggerStarts it
  4. 4Auto-Fix JSONOutput Parser AutofixingModel
  5. 5AI: Extract ExpensesAgentModel
  6. 6Route: Text, Voice or Image?SwitchLogic
  7. 7Split: Entries to RowsSplit OutLogic
  8. 8Set: Text InputSetLogic
  9. 9Telegram: Get Voice FileTelegramService
  10. 10Telegram: Get Image FileTelegramService
  11. 11Telegram: Send error messageTelegramService
  12. 12If null?IfLogic
  13. 13Gemini: Transcribe VoiceGoogle GeminiModel
  14. 14Gemini: Analyze an imageGoogle GeminiModel
  15. 15Set: Extract OutputSetLogic
  16. 16Telegram: Send NullTelegramService
  17. 17Set: Voice Input (Text)SetLogic
  18. 18Set: image Input (Text)SetLogic
  19. 19GSheet: Log ExpenseGoogle SheetsService
  20. 20Telegram: Send ConfirmationTelegramService

How it's built

Starts on
An incoming Telegram message
Steps
20, with 2 branches
Size
Medium: a working afternoon
Connects to
Google Sheets, Telegram
Model
Gemini

Questions

What does it need to run?

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

What starts it?

It starts on an incoming Telegram message.

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. 20 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 20 steps before you point it at anything that matters.