Track receipt expenses via LINE with OpenAI GPT-4o-mini and Google Sheets

by HayatoFujita/藤田隼人 ✓ · 90 views · created 2026-01-13 · Document Extraction, AI Chatbot

What this workflow does

This AI workflow has 17 nodes and runs when an HTTP POST request hits its webhook URL. Along the way it connects OpenAI Chat Model, Google Sheets and Google Drive. It also calls api.line.me over HTTP.

How it runs

Trigger: When an HTTP POST request hits its webhook URL.

1. Filter: Is Image Message? (If): checks a condition and branches into true / false
2. Download LINE Image File (HTTP Request): calls an HTTP API
3. AI Agent: runs an AI agent, with model: OpenAI Model: OCR; output parser: Output Parser: Structured Data
4. Google Sheets: uses Google Sheets
5. Filter: Duplicate Found? (If): checks a condition and branches into true / false
6. LINE: Notify Duplicate (HTTP Request): calls api.line.me (POST)
7. Prepare Image Data (Edit Fields (Set)): sets 1 field: data
8. Google Drive: uses Google Drive
9. Google Sheets: append
10. Google Sheets: uses Google Sheets

…plus 3 more steps. See the full node list below.

Services it uses

OpenAI Chat ModelGoogle SheetsGoogle Drive

HTTP calls to: api.line.me

Before you upgrade to n8n 3.0

Nodes used (10)

• Ifn8n-nodes-base.if
• HTTP Requestn8n-nodes-base.httpRequest
• AI Agent@n8n/n8n-nodes-langchain.agent
• OpenAI Chat Model@n8n/n8n-nodes-langchain.lmChatOpenAi
• Structured Output Parser@n8n/n8n-nodes-langchain.outputParserStructured
• Google Sheetsn8n-nodes-base.googleSheets
• Edit Fields (Set)n8n-nodes-base.set
• Google Driven8n-nodes-base.googleDrive
• Coden8n-nodes-base.code
• Webhookn8n-nodes-base.webhook

From the author

Manage expenses with AI insights through LINE 👥 Who’s it for This workflow is designed for small business owners, freelancers, and finance teams who want to eliminate manual data entry for expense tracking. It is ideal for users who want not just a record of…

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