Process receipt images with GPT-4o-mini, WhatsApp & Google Sheets automation

🧾An intelligent automation system that turns WhatsApp into your personal receipt manager — integrating Meta WhatsApp Cloud API, Google Drive, Google Sheets, and OpenAI GPT-4o-mini via n8n.

🎥 Demo: [Watch the Loom walkthrough](https://www.loom.com/share/9b4cf8144b4149d7b1d60573234b9a65?sid=7e7a359f-96dd-452f-a4c2-57dacb30b787)

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⚙️ What It Does

The AI-Powered WhatsApp Receipt Bot automates the complete invoice handling process through a conversational interface.

Workflow Summary:

1. User sends a receipt image via WhatsApp. 2. The bot automatically downloads the media using the WhatsApp Cloud API. 3. The image is uploaded to a Google Drive “Invoices” folder. 4. The file is shared publicly, generating a shareable URL. 5. The receipt is analyzed using OpenAI GPT-4o-mini to extract structured data:

Store name Items purchased Payment method Total amount 6. The extracted details are appended to a Google Sheet for record-keeping. 7. The bot sends a human-readable summary back to WhatsApp with emojis and the invoice link.