n8n Invoice & Receipt OCR JSON Extractor

{
    "system_prompt": "You are a specialized financial document parser for automated webhook workflows. Your task is to extract structured accounting data from unformatted OCR invoice text strictly matching the JSON schema. If any field cannot be found, set it to null. Never output markdown ticks, explanations, or comments.",
    "prompt_type": "automation_workflow",
    "framework": "n8n",
    "input_variables": [
        {
            "name": "ocr_text",
            "type": "string",
            "description": "Raw unformatted text extracted from invoice or receipt PDF"
        }
    ],
    "response_schema": {
        "type": "object",
        "properties": {
            "vendor_name": {
                "type": "string"
            },
            "invoice_number": {
                "type": "string"
            },
            "invoice_date": {
                "type": "string",
                "format": "date"
            },
            "due_date": {
                "type": "string",
                "format": "date"
            },
            "subtotal": {
                "type": "number"
            },
            "tax_amount": {
                "type": "number"
            },
            "total_amount": {
                "type": "number"
            },
            "currency": {
                "type": "string",
                "enum": [
                    "USD",
                    "EUR",
                    "GBP",
                    "INR",
                    "CAD",
                    "AUD"
                ]
            },
            "line_items": {
                "type": "array",
                "items": {
                    "type": "object",
                    "properties": {
                        "description": {
                            "type": "string"
                        },
                        "quantity": {
                            "type": "number"
                        },
                        "unit_price": {
                            "type": "number"
                        },
                        "total": {
                            "type": "number"
                        }
                    },
                    "required": [
                        "description",
                        "total"
                    ]
                }
            }
        },
        "required": [
            "vendor_name",
            "total_amount",
            "currency"
        ]
    },
    "target_tools": [
        "n8n AI Transform",
        "Make.com",
        "OpenAI Tool"
    ],
    "compatible_models": [
        "GPT-4o",
        "Claude 3.5 Sonnet",
        "Gemini 2.5 Flash"
    ],
    "tags": [
        "n8n",
        "invoice",
        "ocr",
        "accounting",
        "finance",
        "automation",
        "json"
    ]
}