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Extending an n8n OCR workflow to process many receipts or invoices in one run: adjusting the AI agent prompt, handling an array of objects and saving multiple rows to Google Sheets automatically.
An n8n workflow that uses AI to recognize data from photos of receipts and invoices and writes it straight to Google Sheets — from chat node, through file upload, to saving the data.
How to parameterize an AI agent's system prompt in n8n using Google Sheets, so you can manage prompt content dynamically without touching the workflow.