PDF Invoice Extraction & Tracking: Drive, AI, Sheets, Telegram

This n8n workflow revolutionizes invoice processing by automatically detecting new PDF invoices uploaded to a specified Google Drive folder. Upon detection, it downloads the file, extracts text, and uses LangChain's AI-powered Information Extractor to pull critical details like invoice number, client name, amount, and due date. The data is then seamlessly appended to a Google Sheet for centralized recordkeeping, ensuring all invoices are tracked without manual intervention.

Next, Anthropic's Claude Sonnet AI model formats a human-readable summary of the invoice details. This polished message is instantly sent to a Telegram channel or group, alerting the billing team with all necessary information for quick action. The workflow eliminates repetitive data entry, reduces errors, and speeds up procurement cycles.

Ideal for small businesses, accounting firms, or procurement teams handling high volumes of invoices. Benefits include time savings (hours per week), improved accuracy via AI, real-time notifications, and scalable integration with existing Google Workspace tools. Use cases: Vendor invoice tracking, AP automation, compliance auditing, and team collaboration in commerce operations.