Automated Expense Logging from Line Messages

This n8n workflow automates the process of recording expenses shared via Line messages. It starts with a webhook trigger that captures incoming messages or images from Line, then analyzes and extracts relevant financial data. The AI agent classifies and parses the message content to identify expense details such as date, channel, channel type, description, amount, and category. If the message is financial, the data is structured and checked for duplicates before being appended to a Google Sheet for tracking. The workflow also sends automated replies on Line to confirm successful logging or request clarification. This setup is ideal for users who wish to streamline personal or business expense management through messaging apps with minimal manual input.