Automated Invoice Processing with AI and OCR

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This workflow automates the process of detecting, extracting, and structuring data from invoices stored in Google Drive. It begins with a trigger that detects new invoices added to a designated Google Drive folder. Once triggered, the workflow downloads the invoice file and converts it into a Base64 format for easy transmission.

The file is then sent to the Mistral OCR API, which extracts the text content from the invoice images. This text is split into individual pages for detailed processing. Each page’s content is formatted into Markdown, making it easier for the AI models to interpret.

The gathered page data is combined, forming a comprehensive view of the invoice. An AI agent powered by LangChain, utilizing GPT-4, analyzes and structures the invoice data into a clean, organized format. The structured data is then parsed into JSON, making it ready for further automation, storage, or integration with other systems.

This workflow is useful for businesses that receive numerous invoices and need an automated, accurate way to process and organize invoice data without manual effort. It helps streamline accounts payable, reduce errors, and improve data accuracy and retrieval efficiency.

Node Count

11 – 20 Nodes

Nodes Used

@n8n/n8n-nodes-langchain.agent, @n8n/n8n-nodes-langchain.lmChatOpenAi, @n8n/n8n-nodes-langchain.outputParserStructured, extractFromFile, googleDrive, googleDriveTrigger, httpRequest, set, splitOut, stickyNote, summarize

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