{ "id": "", "meta": { "templateCredsSetupCompleted": true }, "name": "Invoice OCR \u2192 Auto Append to Sheets (Internal)", "tags": [], "nodes": [ { "id": "c79d74f7-f2d7-4e35-891d-c428fcfc5dcc", "name": "Schedule Trigger (Weekly Scan)", "type": "n8n-nodes-base.scheduleTrigger", "position": [ 368, -416 ], "parameters": { "rule": { "interval": [ { "field": "weeks", "triggerAtDay": [ 1 ], "triggerAtHour": 20 } ] } }, "typeVersion": 1.2 }, { "id": "acb76a11-4ee8-468c-8023-a4f886f428c2", "name": "Get Parent Folder", "type": "n8n-nodes-base.googleDrive", "position": [ 640, -416 ], "parameters": { "filter": {}, "options": {}, "resource": "fileFolder", "returnAll": true, "queryString": "=\u652f\u6255\u3044\u8acb\u6c42\u66f8\u81ea\u52d5\u8a08\u7b97\u7528\u30d5\u30a9\u30eb\u30c0" }, "credentials": { "googleDriveOAuth2Api": { "name": "" } }, "typeVersion": 3 }, { "id": "499da8a9-f455-4e8e-bf38-f3b5334ec442", "name": "Get Monthly Subfolder", "type": "n8n-nodes-base.googleDrive", "position": [ 848, -416 ], "parameters": { "filter": {}, "options": {}, "resource": "fileFolder", "returnAll": true, "queryString": "='{{$json[\"id\"]}}' in parents and mimeType='application/vnd.google-apps.folder' and name contains '{{$now.setZone(\"Asia/Tokyo\").format(\"yyyy\u5e74MM\u6708\")}}\u5206'", "searchMethod": "query" }, "credentials": { "googleDriveOAuth2Api": { "name": "" } }, "typeVersion": 3, "alwaysOutputData": true }, { "id": "6c95fb12-8dcd-4df3-a611-d099c3298274", "name": "List Files", "type": "n8n-nodes-base.googleDrive", "position": [ 1040, -416 ], "parameters": { "filter": {}, "options": { "fields": [ "webViewLink", "id", "mimeType", "name" ] }, "resource": "fileFolder", "queryString": "='{{$json[\"id\"]}}' in parents and (mimeType='application/pdf' or mimeType contains 'image/')\n", "searchMethod": "query" }, "credentials": { "googleDriveOAuth2Api": { "name": "" } }, "typeVersion": 3 }, { "id": "93009ba2-3af8-4ba0-9044-cf5fa15e0965", "name": "Download File (Binary from Drive)", "type": "n8n-nodes-base.googleDrive", "position": [ 1232, -416 ], "parameters": { "fileId": { "__rl": true, "mode": "id", "value": "={{$json[\"id\"]}}" }, "options": { "binaryPropertyName": "data" }, "operation": "download" }, "credentials": { "googleDriveOAuth2Api": { "name": "" } }, "typeVersion": 3 }, { "id": "b0761836-e013-4728-bb12-dc2e760cfa7f", "name": "OCR (OCR.Space Parsing)", "type": "n8n-nodes-base.httpRequest", "position": [ 1440, -416 ], "parameters": { "url": "https://api.ocr.space/parse/image", "method": "POST", "options": {}, "sendBody": true, "contentType": "multipart-form-data", "sendHeaders": true, "bodyParameters": { "parameters": [ { "name": "file", "parameterType": "formBinaryData", "inputDataFieldName": "data" }, { "name": "language", "value": "jpn" }, { "name": "isOverlayRequired", "value": "false" }, { "name": "OCREngine", "value": "2" }, { "name": "isTable", "value": "true" }, { "name": "scale", "value": "true" } ] }, "headerParameters": { "parameters": [ { "name": "=apikey", "value": "=" } ] } }, "typeVersion": 4.2 }, { "id": "2f843a4c-82dd-45ae-8be8-b438d93fb8ea", "name": "Clean OCR Text (Noise Removal)", "type": "n8n-nodes-base.code", "position": [ 1680, -416 ], "parameters": { "jsCode": "// \u5404\u30a2\u30a4\u30c6\u30e0\u3054\u3068\u306bOCR\u7d50\u679c\u3092\u6574\u5f62\u3057\u3066\u8fd4\u3059\nreturn items.map(item => {\n const parsed = item.json[\"ParsedResults\"]?.[0];\n let text = parsed?.ParsedText || \"\";\n\n // \u30ce\u30a4\u30ba\u9664\u53bb\u30fb\u6574\u5f62\n text = text\n .replace(/\\r/g, \"\\n\") // \u6539\u884c\u30b3\u30fc\u30c9\u7d71\u4e00\n .replace(/\\n{2,}/g, \"\\n\") // \u4f59\u5206\u306a\u6539\u884c\u3092\u524a\u9664\n .replace(/[^\\S\\n]+/g, \" \") // \u4e0d\u8981\u306a\u7a7a\u767d\u3092\u524a\u9664\n .replace(/\u3000/g, \" \") // \u5168\u89d2\u30b9\u30da\u30fc\u30b9\u3092\u534a\u89d2\u306b\n .replace(/[\u201c\u201d]/g, '\"') // \u5909\u306a\u5f15\u7528\u7b26\u3092\u7d71\u4e00\n .replace(/[\u2018\u2019]/g, \"'\")\n .replace(/[\u5186\u00a5]/g, \"\u5186\"); // \u5186\u8a18\u53f7\u3092\u7d71\u4e00\n\n return {\n json: {\n text: text.trim()\n }\n };\n});\n" }, "typeVersion": 2 }, { "id": "888bed82-b755-4416-948c-4db664c1b371", "name": "AI Extraction (Generate Structured JSON)", "type": "@n8n/n8n-nodes-langchain.openAi", "position": [ 304, -32 ], "parameters": { "modelId": { "__rl": true, "mode": "list", "value": "gpt-4o-mini", "cachedResultName": "GPT-4O-MINI" }, "options": {}, "messages": { "values": [ { "role": "system", "content": "You are an AI assistant that analyzes Japanese invoice OCR text and accurately extracts the information required for accounting.\n\n# Input\nBelow is invoice text extracted by OCR.\nIt contains noise, line breaks, and layout issues.\nCarefully reconstruct the content and convert it into structured data as accurately as possible.\n\n---\n{{ $json.text }}\n---\n\n# Output Format\nReturn ONLY the following JSON. Do not include any explanations, chatty text, or code fences.\n\n{\n \"invoice_date\": \"YYYY-MM-DD\",\n \"due_date\": \"YYYY-MM-DD\",\n \"client_name\": \"e.g., Your Client Company\",\n \"subtotal\": 0,\n \"tax\": 0,\n \"total\": 0,\n \"bank_info\": {\n \"bank_name\": \"\",\n \"branch\": \"\",\n \"account_type\": \"ordinary|checking|savings|unknown\",\n \"account_number\": \"\",\n \"account_name\": \"\"\n },\n \"items\": [\n {\n \"description\": \"\",\n \"quantity\": 0,\n \"unit_price\": 0,\n \"amount\": 0\n }\n ],\n \"notes\": \"\"\n}\n\n# Extraction Rules\n- Identify dates from labels like \"\u8acb\u6c42\u65e5/\u767a\u884c\u65e5\" (invoice/issue date) and \"\u652f\u6255\u671f\u9650/\u304a\u652f\u6255\u3044\u671f\u65e5\" (due date), then normalize to YYYY-MM-DD.\n- Normalize amounts (subtotal, tax, total) by removing commas, currency symbols, and the \"\u5186\" unit, and output integers. Ensure consistency for tax-inclusive/exclusive totals when needed.\n- For bank info, prioritize extracting the set: bank name, branch, account type, account number, and account holder. Ignore values that cannot be confidently linked.\n- If there are multiple line items, return multiple objects in the items array. When quantity/unit_price/amount are unknown, use 0 (not \"unknown\").\n- Prefer client names that end with honorifics like \"\u5fa1\u4e2d\" or \"\u69d8\" when present.\n- For unknown fields, use \"unknown\". Always include all keys.\n- Return valid JSON only. No extra characters or leading/trailing newlines.\n" }, { "content": "=={{$json.text}}" } ] }, "jsonOutput": true }, "credentials": { "openAiApi": { "name": "" } }, "typeVersion": 1.8 }, { "id": "2805e6a9-0304-4842-b5b6-eb4996b08dec", "name": "Parse AI Output to JSON", "type": "n8n-nodes-base.code", "position": [ 656, -32 ], "parameters": { "jsCode": "// \u5404\u30a2\u30a4\u30c6\u30e0\uff08PDF\u3054\u3068\uff09\u3092\u72ec\u7acb\u3057\u3066\u51e6\u7406\nreturn items.map(item => {\n const content = item.json.message?.content;\n\n // JSON\u69cb\u9020\u3092\u5b89\u5168\u306b\u30d1\u30fc\u30b9\n let parsed = {};\n try {\n parsed = typeof content === \"string\" ? JSON.parse(content) : content;\n } catch (e) {\n parsed = { error: \"Invalid JSON\", raw: content };\n }\n\n // \u5404\u30a2\u30a4\u30c6\u30e0\u3068\u3057\u3066\u51fa\u529b\uff08\u500b\u5225\u306b\u30b9\u30d7\u30ec\u30c3\u30c9\u30b7\u30fc\u30c8\u306b\u6e21\u308b\uff09\n return { json: parsed };\n});\n" }, "typeVersion": 2 }, { "id": "0d2e5f79-3c09-4352-af43-d7d895669991", "name": "Append to Google Sheets", "type": "n8n-nodes-base.googleSheets", "position": [ 848, -32 ], "parameters": { "columns": { "value": { "\u5408\u8a08": "={{ $json.total }}", "\u5c0f\u8a08": "={{ $json.subtotal }}", "\u6d88\u8cbb\u7a0e": "={{ $json.tax }}", "\u8acb\u6c42\u65e5": "={{ $json.invoice_date }}", "\u9280\u884c\u540d": "={{ $json.bank_info.bank_name }} {{ $json.bank_info.branch }} {{ $json.bank_info.account_type }}", "PDF\u30ea\u30f3\u30af": "={{ $('List Files').item.json.webViewLink }}", "\u53d6\u5f15\u5148\u540d": "={{ $json.client_name }}", "\u53e3\u5ea7\u540d\u7fa9": "={{ $json.bank_info.account_name }}", "\u53e3\u5ea7\u756a\u53f7": "={{ $json.bank_info.account_number }}", "\u652f\u6255\u671f\u9650": "={{ $json.due_date }}" }, "schema": [ { "id": "\u8acb\u6c42\u65e5", "type": "string", "display": true, "removed": false, "required": false, "displayName": "\u8acb\u6c42\u65e5", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "\u652f\u6255\u671f\u9650", "type": "string", "display": true, "removed": false, "required": false, "displayName": "\u652f\u6255\u671f\u9650", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "\u53d6\u5f15\u5148\u540d", "type": "string", "display": true, "removed": false, "required": false, "displayName": "\u53d6\u5f15\u5148\u540d", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "\u5c0f\u8a08", "type": "string", "display": true, "removed": false, "required": false, "displayName": "\u5c0f\u8a08", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "\u6d88\u8cbb\u7a0e", "type": "string", "display": true, "removed": false, "required": false, "displayName": "\u6d88\u8cbb\u7a0e", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "\u5408\u8a08", "type": "string", "display": true, "removed": false, "required": false, "displayName": "\u5408\u8a08", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "\u9280\u884c\u540d", "type": "string", "display": true, "removed": false, "required": false, "displayName": "\u9280\u884c\u540d", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "\u53e3\u5ea7\u756a\u53f7", "type": "string", "display": true, "removed": false, "required": false, "displayName": "\u53e3\u5ea7\u756a\u53f7", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "\u53e3\u5ea7\u540d\u7fa9", "type": "string", "display": true, "removed": false, "required": false, "displayName": "\u53e3\u5ea7\u540d\u7fa9", "defaultMatch": false, "canBeUsedToMatch": true }, { "id": "PDF\u30ea\u30f3\u30af", "type": "string", "display": true, "removed": false, "required": false, "displayName": "PDF\u30ea\u30f3\u30af", "defaultMatch": false, "canBeUsedToMatch": true } ], "mappingMode": "defineBelow", "matchingColumns": [], "attemptToConvertTypes": false, "convertFieldsToString": false }, "options": {}, "operation": "append", "sheetName": { "__rl": true, "mode": "name", "value": "={{ ($item(0).$node[\"Get Monthly Subfolder\"].json.name || \"\u8acb\u6c42\u66f8\u53f0\u5e33\").trim() }}" }, "documentId": { "__rl": true, "mode": "id", "value": "={{ \"\" }}\n" } }, "credentials": { "googleSheetsOAuth2Api": { "name": "" } }, "typeVersion": 4.7 }, { "id": "07e4ec6a-0526-44e6-a7ef-95b2d3e7cc22", "name": "Schedule Trigger (Recurring Execution)", "type": "n8n-nodes-base.stickyNote", "position": [ 272, -640 ], "parameters": { "color": 3, "width": 336, "height": 384, "content": "## Schedule Trigger (Recurring Execution)\nPurpose\n- Periodically scan the Drive folder that stores invoice PDFs.\n- Can also be executed manually for debugging." }, "typeVersion": 1 }, { "id": "7175d70d-bd7a-46c5-96c1-71691e215da5", "name": "Google Drive Folder Discovery", "type": "n8n-nodes-base.stickyNote", "position": [ 624, -640 ], "parameters": { "color": 2, "width": 752, "height": 384, "content": "## Google Drive Folder Discovery\nPurpose\n- Get the parent folder (e.g., \"\u652f\u6255\u3044\u8acb\u6c42\u66f8\u81ea\u52d5\u8a08\u7b97\u7528\u30d5\u30a9\u30eb\u30c0\" meaning \"Folder for automatic invoice calculation\").\n- Auto-detect the current-month subfolder (e.g., a folder named \"2025\u5e7410\u6708\u5206\" meaning \"October 2025\").\n- Search PDF/image files inside the target folder." }, "typeVersion": 1 }, { "id": "7c0a7024-98f7-42f9-8937-4aced9dcbf7a", "name": "AI Extraction & Sheets Append", "type": "n8n-nodes-base.stickyNote", "position": [ 272, -224 ], "parameters": { "color": 4, "width": 848, "height": 384, "content": "## AI Structured Extraction & Google Sheets Append\nPurpose\n- Convert OCR results to a strict JSON structure using GPT.\n- Extract invoice_date / due_date / client_name / subtotal / tax / total / bank_info, etc.\n- Normalize with a Code node, then append one row per invoice to Google Sheets." }, "typeVersion": 1 }, { "id": "bb521714-8b47-4a03-abc0-9e18a471021c", "name": "OCR Processing (PDF \u2192 Text Cleanup)", "type": "n8n-nodes-base.stickyNote", "position": [ 1392, -640 ], "parameters": { "color": 6, "width": 400, "height": 384, "content": "## OCR Processing (PDF \u2192 Text Cleanup)\nPurpose\n- Download Drive files as binary.\n- Use the OCR.Space API for text extraction.\n- Remove noise and normalize line breaks." }, "typeVersion": 1 } ], "active": false, "settings": { "executionOrder": "v1" }, "versionId": "", "connections": { "List Files": { "main": [ [ { "node": "Download File (Binary from Drive)", "type": "main", "index": 0 } ] ] }, "Get Parent Folder": { "main": [ [ { "node": "Get Monthly Subfolder", "type": "main", "index": 0 } ] ] }, "Get Monthly Subfolder": { "main": [ [ { "node": "List Files", "type": "main", "index": 0 } ] ] }, "OCR (OCR.Space Parsing)": { "main": [ [ { "node": "Clean OCR Text (Noise Removal)", "type": "main", "index": 0 } ] ] }, "Parse AI Output to JSON": { "main": [ [ { "node": "Append to Google Sheets", "type": "main", "index": 0 } ] ] }, "Clean OCR Text (Noise Removal)": { "main": [ [ { "node": "AI Extraction (Generate Structured JSON)", "type": "main", "index": 0 } ] ] }, "Schedule Trigger (Weekly Scan)": { "main": [ [ { "node": "Get Parent Folder", "type": "main", "index": 0 } ] ] }, "Download File (Binary from Drive)": { "main": [ [ { "node": "OCR (OCR.Space Parsing)", "type": "main", "index": 0 } ] ] }, "AI Extraction (Generate Structured JSON)": { "main": [ [ { "node": "Parse AI Output to JSON", "type": "main", "index": 0 } ] ] } } }