Track expenses from receipts with Telegram, Gemini, and Google Sheets

by Konstantin Rymar · 1 views · created 2026-10-15 · Invoice Processing, AI Summarization

What this workflow does

This AI workflow has 28 nodes and runs on Telegram events (message, callback query). Along the way it connects Telegram, Google Gemini and Google Sheets.

How it runs

Trigger: On Telegram events (message, callback query).

1. Route by Telegram Input (Switch): routes items into 4 branches
2. Download Telegram Photo (Telegram): work with file
3. Download Telegram Document (Telegram): work with file
4. Handle Unsupported Text Input (Telegram): uses Telegram
5. Parse Telegram Callback Data (Code): runs custom JavaScript code
6. Analyze Receipt Photo with Gemini (Google Gemini): analyze (image)
7. Analyze Receipt Document with Gemini (Google Gemini): work with document
8. Route by Category Response (Switch): routes items into 3 branches
9. Answer Telegram Callback Query (Telegram): work with callback
10. Parse Photo Analysis JSON (Code): runs custom JavaScript code

…plus 17 more steps. See the full node list below.

Services it uses

TelegramGoogle GeminiGoogle Sheets

Before you upgrade to n8n 3.0

Nodes used (11)

• Telegram Triggern8n-nodes-base.telegramTrigger
• Switchn8n-nodes-base.switch
• Telegramn8n-nodes-base.telegram
• Google Gemini@n8n/n8n-nodes-langchain.googleGemini
• Coden8n-nodes-base.code
• Ifn8n-nodes-base.if
• Google Sheetsn8n-nodes-base.googleSheets
• Data tablen8n-nodes-base.dataTable
• Waitn8n-nodes-base.wait
• HTTP Requestn8n-nodes-base.httpRequest
• Edit Fields (Set)n8n-nodes-base.set

From the author

Quick overview This workflow uses a Telegram bot to receive receipt photos or documents, extracts expense details with Google Gemini, and appends the results to Google Sheets, asking the user to confirm or correct the category in Telegram when Gemini’s…

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