Extract structured invoice JSON from PDFs with Mistral OCR and an LLM API Workflow Solution

Workflow overview

Why this workflow matters

Supports knowledge capture and document intelligence use cases.

AlekSystem AI LLM Unstructured Invoice data PDF OCR recognition to JSON output API What this workflow does Accepts a PDF or image upload via Webhook as binary property "data" Runs OCR with the Mistral OCR node Normalizes OCR text Sends OCR text to an LLM to extract structured JSON Cleans and normalizes the JSON Returns either: status: ok status: review_needed Setup Import the workflow JSON into AlekSystem Create/attach Mistral AI credentials on the "Mistral OCR" node Create/attach your choice LLM AI credentials on the OCR text to JSON converson node Activate the workflow POST a file to: /webhook/ocr-to-json Notes This starter is tuned for invoices/documents but can be adapted for receipts, purchase orders, or forms. Depending on your installed AlekSystem version, the Mistral node parameter names may need minor adjustment after import. The workflow returns review_needed when confidence is below 0.5.

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