{ "name": "Monthly Invoice Summarizer", "nodes": [ { "parameters": { "pollTimes": { "item": [ { "mode": "everyMinute" } ] }, "triggerOn": "specificFolder", "folderToWatch": { "__rl": true, "value": "17km7-tfMcYnKIkoqYKn_lQ263ymy_pn_", "mode": "list", "cachedResultName": "Monthly Invoices", "cachedResultUrl": "https://drive.google.com/drive/folders/17km7-tfMcYnKIkoqYKn_lQ263ymy_pn_" }, "event": "folderCreated" }, "type": "n8n-nodes-base.googleDriveTrigger", "typeVersion": 1, "position": [ 0, 0 ], "id": "01b515c2-847b-4dd1-9517-28458f7cdfeb", "name": "Google Drive Trigger", "credentials": { "googleDriveOAuth2Api": { "name": "" } } }, { "parameters": { "amount": 2, "unit": "minutes" }, "type": "n8n-nodes-base.wait", "typeVersion": 1.1, "position": [ 220, 0 ], "id": "eaf1b0a2-41c3-4fba-962e-64b7fac1f1b5", "name": "Wait for 2 Minutes" }, { "parameters": { "resource": "fileFolder", "searchMethod": "query", "queryString": "='{{ $json.id }}' in parents and trashed = false\n", "returnAll": true, "filter": {}, "options": {} }, "type": "n8n-nodes-base.googleDrive", "typeVersion": 3, "position": [ 640, 0 ], "id": "585ddda2-330b-4306-a42c-5457a703df81", "name": "Search files and folders", "credentials": { "googleDriveOAuth2Api": { "name": "" } } }, { "parameters": { "operation": "download", "fileId": { "__rl": true, "value": "={{ $json.id }}", "mode": "id" }, "options": {} }, "type": "n8n-nodes-base.googleDrive", "typeVersion": 3, "position": [ 840, 0 ], "id": "0138add1-9688-409d-911b-7c3a0a686f49", "name": "Download file", "credentials": { "googleDriveOAuth2Api": { "name": "" } } }, { "parameters": { "operation": "pdf", "binaryPropertyName": "=data", "options": {} }, "type": "n8n-nodes-base.extractFromFile", "typeVersion": 1, "position": [ 1080, 0 ], "id": "c02e4ad8-291b-457a-9bfa-fea5f3c1b1c5", "name": "Extract from File", "alwaysOutputData": false }, { "parameters": { "model": { "__rl": true, "mode": "list", "value": "gpt-4.1-mini" }, "options": {} }, "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi", "typeVersion": 1.2, "position": [ 1340, 160 ], "id": "a3c8e01f-914a-4b6a-ac6a-0c576c64c4a5", "name": "OpenAI Chat Model1", "credentials": { "openAiApi": { "name": "" } } }, { "parameters": { "jsonSchemaExample": "{\n\"status\": \"\"\n}" }, "type": "@n8n/n8n-nodes-langchain.outputParserStructured", "typeVersion": 1.3, "position": [ 1560, 160 ], "id": "1d13c41d-4ca4-4c77-a3df-0033b454fc37", "name": "Structured Output Parser1" }, { "parameters": { "conditions": { "options": { "caseSensitive": true, "leftValue": "", "typeValidation": "strict", "version": 2 }, "conditions": [ { "id": "b5cbcaf4-583b-425c-b3e8-02789d87ec20", "leftValue": "={{ $json.output.status }}", "rightValue": "yes", "operator": { "type": "string", "operation": "equals", "name": "filter.operator.equals" } } ], "combinator": "and" }, "options": {} }, "type": "n8n-nodes-base.if", "typeVersion": 2.2, "position": [ 1680, 0 ], "id": "a9d53730-9770-4764-b323-2749ff4b4930", "name": "If" }, { "parameters": { "promptType": "define", "text": "=Based on the text decide if the text is about an invoice or not: {{ $json.text }}\n\nIf yes return \"yes\", if no return \"no\". Don't provide any additional information. Use only small letters", "hasOutputParser": true, "options": {} }, "type": "@n8n/n8n-nodes-langchain.agent", "typeVersion": 2, "position": [ 1360, 0 ], "id": "0e9519da-0fa1-4327-8a15-eac371303ee0", "name": "Invoice Controller" }, { "parameters": { "promptType": "define", "text": "=** Task Overview **\nYou\u2019ll receive raw text extracted from PDF invoices. Your job is to identify the key details listed below and return them in a structured JSON object.\n\n** Information to Capture **\n\ninvoice_name \u2013 the identifier or title of the invoice\ncompany_name \u2013 the name of the business that issued the invoice\ntotal_invoice_amount \u2013 the grand total shown on the invoice\ncategory - choose the most proper category for invoice. ONLY take on out of the following categories:\nSoftware & Tools, Business Operations, Marketing & Sales, Education & Learning, Subscription, Content Creation, Web & Hosting, Team & Collaboration, Other\n\n\nOutput Format (example)\n{\n \"invoice_name\": \"Invoice ABC-123\",\n \"company_name\": \"Acme Corp\",\n \"total_invoice_amount\": 1000,\n \"month\": \"April\",\n \"category\": \"Other\"\n}\n\nGuidelines\n\nIf any detail is missing or unclear, make your best estimate or use null.\n\nProvide the most specific line-item labels available; use generic placeholders only when no description exists.\n\nVerify that the line-item amounts add up to the total invoice amount (minor rounding differences are acceptable).\n\nInput Placeholder\nText: {{ $('Extract from File').item.json.text }}", "hasOutputParser": true, "batching": {} }, "type": "@n8n/n8n-nodes-langchain.chainLlm", "typeVersion": 1.7, "position": [ 2140, -20 ], "id": "6523da98-3b84-4101-b3c9-67ee6e667223", "name": "Basic LLM Chain" }, { "parameters": { "model": { "__rl": true, "mode": "list", "value": "gpt-4.1-mini" }, "options": {} }, "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi", "typeVersion": 1.2, "position": [ 2120, 160 ], "id": "091d6b59-c862-42e3-b02e-b0a01964e31c", "name": "OpenAI Chat Model", "credentials": { "openAiApi": { "name": "" } } }, { "parameters": { "jsonSchemaExample": "{\n \"invoice_name\": \"Invoice ABC-123\",\n \"company_name\": \"Acme Corp\",\n \"total_invoice_amount\": 1000,\n \"month\": \"April\",\n \"category\": \"Web & Hosting\"\n}", "autoFix": true }, "type": "@n8n/n8n-nodes-langchain.outputParserStructured", "typeVersion": 1.3, "position": [ 2300, 160 ], "id": "333dd58a-b12d-40c1-99cc-124168af9417", "name": "Structured Output Parser" }, { "parameters": { "resource": "databasePage", "databaseId": { "__rl": true, "value": "22bccdb2-3d99-81b5-af9b-e8726583dc29", "mode": "list", "cachedResultName": "All Invoices", "cachedResultUrl": "https://www.notion.so/22bccdb23d9981b5af9be8726583dc29" }, "propertiesUi": { "propertyValues": [ { "key": "Month|title", "title": "={{ $json.output.month }}" }, { "key": "Invoice_From|rich_text", "textContent": "={{ $json.output.company_name }}" }, { "key": "Amount|number", "numberValue": "={{ $json.output.total_invoice_amount }}" }, { "key": "Category|select", "selectValue": "={{ $json.output.category }}" } ] }, "options": {} }, "type": "n8n-nodes-base.notion", "typeVersion": 2.2, "position": [ 2540, -20 ], "id": "695f6597-ab8a-4d6d-9692-79015cd42537", "name": "Create a database page", "credentials": { "notionApi": { "name": "" } } }, { "parameters": { "model": { "__rl": true, "mode": "list", "value": "gpt-4.1-mini" }, "options": {} }, "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi", "typeVersion": 1.2, "position": [ 2320, 300 ], "id": "181a9b45-d54e-4cee-9e6c-c8452133be6a", "name": "OpenAI Chat Model2", "credentials": { "openAiApi": { "name": "" } } }, { "parameters": {}, "type": "n8n-nodes-base.noOp", "typeVersion": 1, "position": [ 1840, 200 ], "id": "1a4f03bb-21d0-4de6-9773-862cb016551d", "name": "No Operation, do nothing" }, { "parameters": {}, "type": "@n8n/n8n-nodes-langchain.toolCalculator", "typeVersion": 1, "position": [ 3560, 200 ], "id": "9b08b7dd-4bd4-4088-89d4-1c3e32069b87", "name": "Calculator" }, { "parameters": { "promptType": "define", "text": "=Amounts in $, please sum it up: {{ $('Aggregate').item.json.property_amount }}. Only return plain number with currency. Also return number of invoices based on number of numbers", "hasOutputParser": true, "options": {} }, "type": "@n8n/n8n-nodes-langchain.agent", "typeVersion": 2, "position": [ 3380, -20 ], "id": "8c2715aa-7fb8-4365-a4f9-e57423a5529a", "name": "AI Agent" }, { "parameters": { "fieldsToAggregate": { "fieldToAggregate": [ { "fieldToAggregate": "property_amount" }, { "fieldToAggregate": "property_invoice_from" } ] }, "options": {} }, "type": "n8n-nodes-base.aggregate", "typeVersion": 1, "position": [ 2760, -20 ], "id": "76929f93-9ae3-4ec1-a923-1f95c965501f", "name": "Aggregate" }, { "parameters": { "model": { "__rl": true, "mode": "list", "value": "gpt-4.1-mini" }, "options": {} }, "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi", "typeVersion": 1.2, "position": [ 3400, 200 ], "id": "3b200ca3-0e14-46ce-be44-998c83b54db2", "name": "OpenAI Chat Model3", "credentials": { "openAiApi": { "name": "" } } }, { "parameters": { "jsonSchemaExample": "{\n\"amount\": \"\",\n\"invoices_amount\": \"\"\n}" }, "type": "@n8n/n8n-nodes-langchain.outputParserStructured", "typeVersion": 1.3, "position": [ 3700, 200 ], "id": "5a481956-c5be-48c5-a2b3-6db4e153990d", "name": "Structured Output Parser2" }, { "parameters": { "resource": "databasePage", "databaseId": { "__rl": true, "value": "22bccdb2-3d99-804d-9203-fc0d6e942ba8", "mode": "list", "cachedResultName": "Monthly Summary in PDF Format", "cachedResultUrl": "https://www.notion.so/22bccdb23d99804d9203fc0d6e942ba8" }, "propertiesUi": { "propertyValues": [ { "key": "Month|title", "title": "={{ $('Basic LLM Chain').first().json.output.month }}" }, { "key": "Total Amount|rich_text", "textContent": "={{ $json.output.amount }}" } ] }, "options": {} }, "type": "n8n-nodes-base.notion", "typeVersion": 2.2, "position": [ 3760, -20 ], "id": "a14ea0f2-08fb-47b2-a2b3-e82e921d05cd", "name": "Create a database page1", "credentials": { "notionApi": { "name": "" } } }, { "parameters": { "resource": "fileFolder", "searchMethod": "query", "queryString": "='{{ $('Google Drive Trigger').item.json.parents[0] }}' in parents and trashed = false\n", "returnAll": true, "filter": {}, "options": {} }, "type": "n8n-nodes-base.googleDrive", "typeVersion": 3, "position": [ 3320, 1000 ], "id": "bb0bb9b3-e94e-49b4-a8ce-af19714a5c9b", "name": "Search files and folders1", "credentials": { "googleDriveOAuth2Api": { "name": "" } } }, { "parameters": { "operation": "deleteFile", "fileId": { "__rl": true, "value": "={{ $json.id }}", "mode": "id" }, "options": {} }, "type": "n8n-nodes-base.googleDrive", "typeVersion": 3, "position": [ 3540, 1000 ], "id": "8b27b83c-dc39-4160-a6f8-fb5bdb6afe83", "name": "Delete a file", "credentials": { "googleDriveOAuth2Api": { "name": "" } } }, { "parameters": { "resource": "fileFolder", "queryString": "={{ $('Google Drive Trigger').item.json.name }}", "filter": { "folderId": { "__rl": true, "value": "17km7-tfMcYnKIkoqYKn_lQ263ymy_pn_", "mode": "list", "cachedResultName": "Monthly Invoices", "cachedResultUrl": "https://drive.google.com/drive/folders/17km7-tfMcYnKIkoqYKn_lQ263ymy_pn_" } }, "options": {} }, "type": "n8n-nodes-base.googleDrive", "typeVersion": 3, "position": [ 420, 0 ], "id": "253f7f8c-35e1-4957-b89b-b5b4c097702a", "name": "Search for folder", "credentials": { "googleDriveOAuth2Api": { "name": "" } } }, { "parameters": { "rule": { "interval": [ { "field": "minutes" } ] } }, "type": "n8n-nodes-base.scheduleTrigger", "typeVersion": 1.2, "position": [ -420, -240 ], "id": "4b4a41c2-162d-44bf-81b4-4ddc6d96d78a", "name": "Schedule Trigger", "disabled": true }, { "parameters": { "content": "# Optional: Delete Folder & Invoices", "height": 560, "width": 920 }, "type": "n8n-nodes-base.stickyNote", "typeVersion": 1, "position": [ 3020, 780 ], "id": "c3d237da-b0d0-4e89-ae59-030fc6b21ae9", "name": "Sticky Note" }, { "parameters": { "sendTo": "krystian7431@gmail.com", "subject": "=Invoice Summary for {{ $('Google Drive Trigger').item.json.name }} is Ready!", "emailType": "text", "message": "=Hi,\n\nHere\u2019s your invoice summary for {{ $('Google Drive Trigger').item.json.name }}:\n\n\ud83e\uddfe Total Amount: {{ $('AI Agent').item.json.output.amount }}\n\n\ud83e\udd47 Number of invoices: {{ $('AI Agent').item.json.output.invoices_amount }}\n\n\u2709\ufe0f Invoices From: {{ $('Edit Fields').item.json.invoices }}\n\nThe full report has been saved to Notion.\n\nBest,\nAI Krystian\n", "options": { "appendAttribution": false } }, "type": "n8n-nodes-base.gmail", "typeVersion": 2.1, "position": [ 4020, -20 ], "id": "ef2e7f17-9b34-491b-91ce-f3dd15ed6924", "name": "Send a message", "credentials": { "gmailOAuth2": { "name": "" } } }, { "parameters": { "assignments": { "assignments": [ { "id": "79f05222-05d4-4fbf-b188-40fd8f77d0e7", "name": "invoices", "value": "={{ $json.property_invoice_from }}", "type": "string" } ] }, "options": {} }, "type": "n8n-nodes-base.set", "typeVersion": 3.4, "position": [ 3020, -20 ], "id": "1baa30eb-ec4f-4aff-a33b-3e56fc4e8e18", "name": "Edit Fields" } ], "connections": { "Google Drive Trigger": { "main": [ [ { "node": "Wait for 2 Minutes", "type": "main", "index": 0 } ] ] }, "Wait for 2 Minutes": { "main": [ [ { "node": "Search for folder", "type": "main", "index": 0 } ] ] }, "Search files and folders": { "main": [ [ { "node": "Download file", "type": "main", "index": 0 } ] ] }, "Extract from File": { "main": [ [ { "node": "Invoice Controller", "type": "main", "index": 0 } ] ] }, "OpenAI Chat Model1": { "ai_languageModel": [ [ { "node": "Invoice Controller", "type": "ai_languageModel", "index": 0 } ] ] }, "Structured Output Parser1": { "ai_outputParser": [ [ { "node": "Invoice Controller", "type": "ai_outputParser", "index": 0 } ] ] }, "If": { "main": [ [ { "node": "Basic LLM Chain", "type": "main", "index": 0 } ], [ { "node": "No Operation, do nothing", "type": "main", "index": 0 } ] ] }, "Invoice Controller": { "main": [ [ { "node": "If", "type": "main", "index": 0 } ] ] }, "Download file": { "main": [ [ { "node": 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"type": "ai_languageModel", "index": 0 } ] ] }, "Structured Output Parser2": { "ai_outputParser": [ [ { "node": "AI Agent", "type": "ai_outputParser", "index": 0 } ] ] }, "Search files and folders1": { "main": [ [ { "node": "Delete a file", "type": "main", "index": 0 } ] ] }, "Create a database page1": { "main": [ [ { "node": "Send a message", "type": "main", "index": 0 } ] ] }, "Search for folder": { "main": [ [ { "node": "Search files and folders", "type": "main", "index": 0 } ] ] }, "Edit Fields": { "main": [ [ { "node": "AI Agent", "type": "main", "index": 0 } ] ] } }, "active": true, "settings": { "executionOrder": "v1" }, "versionId": "c161b4f0-6f3e-4c6c-a3fa-cffe7ed23773", "meta": { "templateCredsSetupCompleted": true }, "id": "4F0J2RJbNtlyByhD", "tags": [] }