Workflow: Lmopenai Workflow
Integrations: aggregate, gmail, gmailTrigger, googleSheets, httpRequest, if, merge, noOp, set, splitOut, stickyNote, switch, wait

{"meta": {"instanceId": "workflow-d8d3c333", "versionId": "1.0.0", "createdAt": "2025-09-29T07:07:58.398289", "updatedAt": "2025-09-29T07:07:58.398304", "owner": "n8n-user", "license": "MIT", "category": "automation", "status": "active", "priority": "high", "environment": "production"}, "nodes": [{"id": "7076854e-c7e8-45b5-9e5e-16678bffa254", "name": "OpenAI Model", "type": "n8n-nodes-base.noOp", "position": [2420, 480], "parameters": {"model": {"__rl": true, "mode": "list", "value": "gpt-3.5-turbo-1106", "cachedResultName": "gpt-3.5-turbo-1106"}, "options": {"temperature": 0}}, "credentials": {"openAiApi": {"id": "8gccIjcuf3gvaoEr", "name": "OpenAi account"}}, "typeVersion": 1, "notes": "This lmOpenAi node performs automated tasks as part of the workflow."}, {"id": "00819f1c-2c60-4b7c-b395-445ec05fd898", "name": "Structured Output Parser", "type": "n8n-nodes-base.noOp", "position": [2600, 480], "parameters": {"jsonSchema": "{\n  \"Invoice date\": { \"type\": \"date\" },\n  \"invoice number\": { \"type\": \"string\" },\n  \"Purchase order number\": { \"type\": \"string\" },\n  \"Supplier name\": { \"type\": \"string\" },\n  \"Supplier address\": {\n    \"type\": \"object\",\n    \"properties\": {\n      \"address 1\": { \"type\": \"string\" },\n      \"address 2\": { \"type\": \"string\" },\n      \"city\": { \"type\": \"string\" },\n      \"postcode\": { \"type\": \"string\" }\n    }\n  },\n  \"Supplier VAT identification number\": { \"type\": \"string\" },\n  \"Customer name\": { \"type\": \"string\" },\n  \"Customer address\": {\n    \"type\": \"object\",\n    \"properties\": {\n      \"address 1\": { \"type\": \"string\" },\n      \"address 2\": { \"type\": \"string\" },\n      \"city\": { \"type\": \"string\" },\n      \"postcode\": { \"type\": \"string\" }\n    }\n  },\n  \"Customer VAT identification number\": { \"type\": \"string\" }, \n  \"Shipping addresses\": {\n    \"type\": \"array\",\n    \"items\": {\n      \"type\": \"object\",\n      \"properties\": {\n        \"address 1\": { \"type\": \"string\" },\n        \"address 2\": { \"type\": \"string\" },\n        \"city\": { \"type\": \"string\" },\n        \"postcode\": { \"type\": \"string\" }\n      }\n    }\n  },\n  \"Line items\": {\n    \"type\": \"array\",\n    \"items\": {\n      \"name\": \"string\",\n      \"description\": \"string\",\n      \"price\": \"number\",\n      \"discount\": \"number\"\n    }\n  },\n  \"Subtotal without VAT\": { \"type\": \"number\" },\n  \"Subtotal with VAT\": { \"type\": \"number\" },\n  \"Total price\": { \"type\": \"number\" }\n}"}, "typeVersion": 1.1, "notes": "This outputParserStructured node performs automated tasks as part of the workflow."}, {"id": "3b40d506-aabc-4105-853a-a318375cea73", "name": "Upload to LlamaParse", "type": "n8n-nodes-base.httpRequest", "position": [1620, 420], "parameters": {"url": "{{ $env.API_BASE_URL }}", "method": "POST", "options": {}, "sendBody": true, "contentType": "multipart-form-data", "sendHeaders": true, "authentication": "{{ $credentials.genericCredentialType }}", "bodyParameters": {"parameters": [{"name": "file", "parameterType": "formBinaryData", "inputDataFieldName": "=attachment_0"}]}, "genericAuthType": "httpHeaderAuth", "headerParameters": {"parameters": [{"name": "accept", "value": "application/json"}]}}, "credentials": {"httpHeaderAuth": {"id": "pZ4YmwFIkyGnbUC7", "name": "LlamaIndex API"}}, "typeVersion": 4.2, "notes": "This httpRequest node performs automated tasks as part of the workflow."}, {"id": "57a5d331-8838-4d44-8fac-a44dba35fcc4", "name": "Sticky Note", "type": "n8n-nodes-base.stickyNote", "position": [1540, 140], "parameters": {"color": 7, "width": 785.9525375246163, "height": 623.4951418211454, "content": "## 2. Advanced PDF Processing with LlamaParse\n[Read more about using HTTP Requests]({{ $env.WEBHOOK_URL }}\n\nLlamaIndex's LlamaCloud is a cloud-based service that allows you to upload,\nparse, and index document. LlamaParse is a tool offered by LlamaCloud\nto parse for complex PDFs with embedded objects ie PDF Tables and figures.\n\nAt time of writing, you can parse 1000 pdfs/day with LlamaCloud's free plan\nby signing up at [{{ $env.WEBHOOK_URL }}]({{ $env.WEBHOOK_URL }}"}, "typeVersion": 1, "notes": "This stickyNote node performs automated tasks as part of the workflow."}, {"id": "a4504d83-da3b-41bc-891f-f8f9314a6af5", "name": "Receiving Invoices", "type": "n8n-nodes-base.gmailTrigger", "position": [780, 400], "parameters": {"simple": false, "filters": {"q": "has:attachment", "sender": "invoices@paypal.com"}, "options": {"downloadAttachments": true}, "pollTimes": {"item": [{"mode": "everyMinute"}]}}, "credentials": {"gmailOAuth2": {"id": "Sf5Gfl9NiFTNXFWb", "name": "Gmail account"}}, "typeVersion": 1, "notes": "This gmailTrigger node performs automated tasks as part of the workflow."}, {"id": "02bd4636-f35b-4a3a-8a5f-9ae7aeed2bf4", "name": "Append to Reconciliation Sheet", "type": "n8n-nodes-base.googleSheets", "position": [2960, 320], "parameters": {"columns": {"value": {}, "schema": [{"id": "Invoice date", "type": "string", "display": true, "removed": false, "required": false, "displayName": "Invoice date", "defaultMatch": false, "canBeUsedToMatch": true}, {"id": "invoice number", "type": "string", "display": true, "removed": false, "required": false, "displayName": "invoice number", "defaultMatch": false, "canBeUsedToMatch": true}, {"id": "Purchase order number", "type": "string", "display": true, "removed": false, "required": false, "displayName": "Purchase order number", "defaultMatch": false, "canBeUsedToMatch": true}, {"id": "Supplier name", "type": "string", "display": true, "removed": false, "required": false, "displayName": "Supplier name", "defaultMatch": false, "canBeUsedToMatch": true}, {"id": "Supplier address", "type": "string", "display": true, "removed": false, "required": false, "displayName": "Supplier address", "defaultMatch": false, "canBeUsedToMatch": true}, {"id": "Supplier VAT identification number", "type": "string", "display": true, "removed": false, "required": false, "displayName": "Supplier VAT identification number", "defaultMatch": false, "canBeUsedToMatch": true}, {"id": "Customer name", "type": "string", "display": true, "removed": false, "required": false, "displayName": "Customer name", "defaultMatch": false, "canBeUsedToMatch": true}, {"id": "Customer address", "type": "string", "display": true, "removed": false, "required": false, "displayName": "Customer address", "defaultMatch": false, "canBeUsedToMatch": true}, {"id": "Customer VAT identification number", "type": "string", "display": true, "removed": false, "required": false, "displayName": "Customer VAT identification number", "defaultMatch": false, "canBeUsedToMatch": true}, {"id": "Shipping addresses", "type": "string", "display": true, "removed": false, "required": false, "displayName": "Shipping addresses", "defaultMatch": false, "canBeUsedToMatch": true}, {"id": "Line items", "type": "string", "display": true, "removed": false, "required": false, "displayName": "Line items", "defaultMatch": false, "canBeUsedToMatch": true}, {"id": "Subtotal without VAT", "type": "string", "display": true, "removed": false, "required": false, "displayName": "Subtotal without VAT", "defaultMatch": false, "canBeUsedToMatch": true}, {"id": "Subtotal with VAT", "type": "string", "display": true, "removed": false, "required": false, "displayName": "Subtotal with VAT", "defaultMatch": false, "canBeUsedToMatch": true}, {"id": "Total price", "type": "string", "display": true, "removed": false, "required": false, "displayName": "Total price", "defaultMatch": false, "canBeUsedToMatch": true}], "mappingMode": "autoMapInputData", "matchingColumns": ["output"]}, "options": {}, "operation": "append", "sheetName": {"__rl": true, "mode": "id", "value": "gid=0"}, "documentId": {"__rl": true, "mode": "list", "value": "1omHDl1jpjHyrtga2ZHBddUkbkdatEr1ga9vHc4fQ1pI", "cachedResultUrl": "{{ $env.WEBHOOK_URL }}", "cachedResultName": "Invoice Reconciliation"}}, "credentials": {"googleSheetsOAuth2Api": {"id": "XHvC7jIRR8A2TlUl", "name": "Google Sheets account"}}, "typeVersion": 4.3, "notes": "This googleSheets node performs automated tasks as part of the workflow."}, {"id": "cdb0a7ee-068d-465a-b4ae-d5221d5e7400", "name": "Get Processing Status", "type": "n8n-nodes-base.httpRequest", "position": [1800, 420], "parameters": {"url": "{{ $env.BASE_URL }}", "options": {}, "sendHeaders": true, "authentication": "{{ $credentials.genericCredentialType }}", "genericAuthType": "httpHeaderAuth", "headerParameters": {"parameters": [{"name": "accept", "value": "application/json"}]}}, "credentials": {"httpHeaderAuth": {"id": "pZ4YmwFIkyGnbUC7", "name": "LlamaIndex API"}}, "typeVersion": 4.2, "notes": "This httpRequest node performs automated tasks as part of the workflow."}, {"id": "b68a01ab-d8e6-42f4-ab1d-81e746695eef", "name": "Wait to stay within service limits", "type": "n8n-nodes-base.wait", "position": [2120, 560], "webhookId": "17a96ed6-b5ff-47bb-a8a2-39c1eb40185a", "parameters": {"amount": 1}, "typeVersion": 1.1, "notes": "This wait node performs automated tasks as part of the workflow."}, {"id": "41bd28d2-665a-4f71-a456-98eeb26b6655", "name": "Is Job Ready?", "type": "n8n-nodes-base.switch", "position": [1960, 420], "parameters": {"rules": {"values": [{"outputKey": "YOUR_CREDENTIAL_HERE", "conditions": {"options": {"leftValue": "", "caseSensitive": true, "typeValidation": "strict"}, "combinator": "and", "conditions": [{"id": "300fce8c-b19a-4d0c-86e8-f62853c70ce2", "operator": {"name": "filter.operator.equals", "type": "string", "operation": "equals"}, "leftValue": "={{ $json.status }}", "rightValue": "SUCCESS"}]}, "renameOutput": true}, {"outputKey": "YOUR_CREDENTIAL_HERE", "conditions": {"options": {"leftValue": "", "caseSensitive": true, "typeValidation": "strict"}, "combinator": "and", "conditions": [{"id": "e6058aa0-a3e2-4ce3-9bed-6ff41a5be052", "operator": {"name": "filter.operator.equals", "type": "string", "operation": "equals"}, "leftValue": "={{ $json.status }}", "rightValue": "ERROR"}]}, "renameOutput": true}, {"outputKey": "YOUR_CREDENTIAL_HERE", "conditions": {"options": {"leftValue": "", "caseSensitive": true, "typeValidation": "strict"}, "combinator": "and", "conditions": [{"id": "ceb6338f-4261-40ac-be11-91f61c7302ba", "operator": {"name": "filter.operator.equals", "type": "string", "operation": "equals"}, "leftValue": "={{ $json.status }}", "rightValue": "CANCELED"}]}, "renameOutput": true}, {"outputKey": "YOUR_CREDENTIAL_HERE", "conditions": {"options": {"leftValue": "", "caseSensitive": true, "typeValidation": "strict"}, "combinator": "and", "conditions": [{"id": "0fa97d86-432a-409a-917e-5f1a002b1ab9", "operator": {"name": "filter.operator.equals", "type": "string", "operation": "equals"}, "leftValue": "={{ $json.status }}", "rightValue": "PENDING"}]}, "renameOutput": true}]}, "options": {"allMatchingOutputs": true}}, "typeVersion": 3, "notes": "This switch node performs automated tasks as part of the workflow."}, {"id": "f7157abe-b1ee-46b3-adb2-1be056d9d75d", "name": "Sticky Note1", "type": "n8n-nodes-base.stickyNote", "position": [694.0259411218055, 139.97202236910687], "parameters": {"color": 7, "width": 808.8727491350096, "height": 709.5781339256318, "content": "## 1. Watch for Invoice Emails\n[Read more about Gmail Triggers]({{ $env.WEBHOOK_URL }}\n\nThe Gmail node can watch for all incoming messages and filter based on a condition. We'll set our Gmail node to wait for:\n* a message from particular email address.\n* having an attachment which should be the invoice PDF\n* not having a label \"invoice synced\", which is what we use to avoid duplicate processing."}, "typeVersion": 1, "notes": "This stickyNote node performs automated tasks as part of the workflow."}, {"id": "ff7cb6e4-5a60-4f12-b15e-74e7a4a302ce", "name": "Sticky Note2", "type": "n8n-nodes-base.stickyNote", "position": [2360, 70.48792658995046], "parameters": {"color": 7, "width": 805.0578351924228, "height": 656.5014186128178, "content": "## 3. Use LLMs to Extract Values from Data\n[Read more about Basic LLM Chain]({{ $env.WEBHOOK_URL }}\n\nLarge language models are perfect for data extraction tasks as they can work across a range of document layouts without human intervention. The extracted data can then be sent to a variety of datastores such as spreadsheets, accounting systems and/or CRMs.\n\n**Tip:** The \"Structured Output Parser\" ensures the AI output can be\ninserted to our spreadsheet without additional clean up and/or formatting. "}, "typeVersion": 1, "notes": "This stickyNote node performs automated tasks as part of the workflow."}, {"id": "0d510631-440b-41f5-b1aa-9b7279e9c8e3", "name": "Sticky Note3", "type": "n8n-nodes-base.stickyNote", "position": [1934, 774], "parameters": {"color": 5, "width": 394.15089838126653, "height": 154.49585536070904, "content": "### \ud83d\ude4b\u200d\u2642\ufe0f Why not just use the built-in PDF convertor?\nA common issue with PDF-to-text convertors are that they ignore important data structures like tables. These structures can be important for data extraction. For example, being able to distinguish between seperate line items in an invoice."}, "typeVersion": 1, "notes": "This stickyNote node performs automated tasks as part of the workflow."}, {"id": "fe7fdb90-3c85-4f29-a7d3-16f927f48682", "name": "Sticky Note4", "type": "n8n-nodes-base.stickyNote", "position": [3200, 157.65172434465347], "parameters": {"color": 7, "width": 362.3535748101346, "height": 440.3435768155051, "content": "## 4. Add Label to Avoid Duplication\n[Read more about working with Gmail]({{ $env.WEBHOOK_URL }}\n\nTo finish off the workflow, we'll add the \"invoice synced\" label to the original invoice email to flag that the extraction was successful. This can be useful if working with a shared inbox and for quality control purposes later."}, "typeVersion": 1, "notes": "This stickyNote node performs automated tasks as part of the workflow."}, {"id": "1acf2c60-c2b9-4f78-94a4-0711c8bd71ab", "name": "Sticky Note5", "type": "n8n-nodes-base.stickyNote", "position": [300, 140], "parameters": {"width": 360.0244620907562, "height": 573.2443601155958, "content": "## Try Me Out!\n\n**This workflow does the following:**\n* Waits for email invoices with PDF attachments.\n* Uses the LlamaParse service to convert the invoice PDF into a markdown file.\n* Uses a LLM to extract invoice data from the Markdown file.\n* Exports the extracted data to a Google Sheet.\n\n### Follow along with the blog here\n{{ $env.WEBHOOK_URL }}\n\n### Good to know\n* You'll need to create the label \"invoice synced\" in gmail before using this workflow.\n\n### Need Help?\nJoin the [Discord]({{ $env.WEBHOOK_URL }} or ask in the [Forum]({{ $env.WEBHOOK_URL }}\n\nHappy Hacking!"}, "typeVersion": 1, "notes": "This stickyNote node performs automated tasks as part of the workflow."}, {"id": "3802c538-acf9-48d8-b011-bfe2fb817350", "name": "Add \"invoice synced\" Label", "type": "n8n-nodes-base.gmail", "position": [3320, 400], "parameters": {"labelIds": ["Label_5511644430826409825"], "messageId": "={{ $('Receiving Invoices').item.json.id }}", "operation": "addLabels"}, "credentials": {"gmailOAuth2": {"id": "Sf5Gfl9NiFTNXFWb", "name": "Gmail account"}}, "typeVersion": 2.1, "notes": "This gmail node performs automated tasks as part of the workflow."}, {"id": "ffabd8c5-c440-4473-8e44-b849426c70cf", "name": "Get Parsed Invoice Data", "type": "n8n-nodes-base.httpRequest", "position": [2160, 280], "parameters": {"url": "{{ $env.BASE_URL }}", "options": {"redirect": {"redirect": {}}}, "authentication": "{{ $credentials.genericCredentialType }}", "genericAuthType": "httpHeaderAuth"}, "credentials": {"httpHeaderAuth": {"id": "pZ4YmwFIkyGnbUC7", "name": "LlamaIndex API"}}, "typeVersion": 4.2, "notes": "This httpRequest node performs automated tasks as part of the workflow."}, {"id": "5f9b507f-4dc1-4853-bf71-a64f2f4b55c1", "name": "Map Output", "type": "n8n-nodes-base.set", "position": [2760, 320], "parameters": {"mode": "raw", "options": {}, "jsonOutput": "={{ $json.output }}"}, "typeVersion": 3.3, "notes": "This set node performs automated tasks as part of the workflow."}, {"id": "d22744cd-151d-4b92-b4f2-4a5b9ceb4ee7", "name": "Apply Data Extraction Rules", "type": "n8n-nodes-base.noOp", "position": [2420, 320], "parameters": {"text": "=Given the following invoice in the <invoice> xml tags, extract the following information as listed below.\nIf you cannot the information for a specific item, then leave blank and skip to the next. \n\n* Invoice date\n* invoice number\n* Purchase order number\n* Supplier name\n* Supplier address\n* Supplier VAT identification number\n* Customer name\n* Customer address\n* Customer VAT identification number\n* Shipping addresses\n* Line items, including a description of the goods or services rendered\n* Price with and without VAT\n* Total price\n\n<invoice>{{ $json.markdown }}</invoice>", "promptType": "define", "hasOutputParser": true}, "typeVersion": 1.4, "notes": "This chainLlm node performs automated tasks as part of the workflow."}, {"id": "3735a124-9fab-4400-8b94-8b5aa9f951fe", "name": "Should Process Email?", "type": "n8n-nodes-base.if", "position": [1340, 400], "parameters": {"options": {}, "conditions": {"options": {"leftValue": "", "caseSensitive": true, "typeValidation": "strict"}, "combinator": "and", "conditions": [{"id": "e5649a2b-6e12-4cc4-8001-4639cc9cc2c2", "operator": {"name": "filter.operator.equals", "type": "string", "operation": "equals"}, "leftValue": "={{ $input.item.binary.attachment_0.mimeType }}", "rightValue": "application/pdf"}, {"id": "4c57ab9b-b11c-455a-a63d-daf48418b06e", "operator": {"type": "array", "operation": "notContains", "rightType": "any"}, "leftValue": "={{ $json.labels }}", "rightValue": "invoice synced"}]}}, "typeVersion": 2, "notes": "This if node performs automated tasks as part of the workflow."}, {"id": "12a23527-39f3-4f72-8691-3d5cf59f9909", "name": "Split Out Labels", "type": "n8n-nodes-base.splitOut", "position": [980, 400], "parameters": {"options": {}, "fieldToSplitOut": "labelIds"}, "typeVersion": 1, "notes": "This splitOut node performs automated tasks as part of the workflow."}, {"id": "88ff6e22-d3d3-403d-b0b2-2674487140a7", "name": "Get Labels Names", "type": "n8n-nodes-base.gmail", "position": [980, 540], "parameters": {"labelId": "={{ $json.labelIds }}", "resource": "label", "operation": "get"}, "credentials": {"gmailOAuth2": {"id": "Sf5Gfl9NiFTNXFWb", "name": "Gmail account"}}, "typeVersion": 2.1, "notes": "This gmail node performs automated tasks as part of the workflow."}, {"id": "88accb8e-6531-40be-8d35-1bba594149af", "name": "Combine Label Names", "type": "n8n-nodes-base.aggregate", "position": [980, 680], "parameters": {"options": {}, "fieldsToAggregate": {"fieldToAggregate": [{"renameField": true, "outputFieldName": "labels", "fieldToAggregate": "name"}]}}, "typeVersion": 1, "notes": "This aggregate node performs automated tasks as part of the workflow."}, {"id": "d233ff33-cabf-434e-876d-879693ecaf58", "name": "Email with Label Names", "type": "n8n-nodes-base.merge", "position": [1160, 400], "parameters": {"mode": "combine", "options": {}, "combinationMode": "multiplex"}, "typeVersion": 2.1, "notes": "This merge node performs automated tasks as part of the workflow."}, {"id": "733fc285-e069-4e4e-b13e-dfc1c259ac12", "name": "Sticky Note6", "type": "n8n-nodes-base.stickyNote", "position": [2540, 460], "parameters": {"width": 192.26896179623753, "height": 213.73043662572252, "content": "\n\n\n\n\n\n\n\n\n\n\n\n**Need more attributes?**\nChange it here!"}, "typeVersion": 1, "notes": "This stickyNote node performs automated tasks as part of the workflow."}, {"id": "83aa6ed0-ce3b-48d7-aded-475c337ae86e", "name": "Sticky Note7", "type": "n8n-nodes-base.stickyNote", "position": [2880, 300], "parameters": {"width": 258.29345180972877, "height": 397.0641952938746, "content": "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\ud83d\udea8**Required**\n* Set Your Google Sheet URL here\n* Set the Name of your Sheet\n\n\n**Don't use GSheets?**\nSwap this for Excel, Airtable or a Database!"}, "typeVersion": 1, "notes": "This stickyNote node performs automated tasks as part of the workflow."}, {"id": "720070f6-2d6c-45ef-80c2-e950862a002b", "name": "Sticky Note8", "type": "n8n-nodes-base.stickyNote", "position": [740, 380], "parameters": {"width": 174.50671517518518, "height": 274.6295678979021, "content": "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\ud83d\udea8**Required**\n* Change the email filters here!"}, "typeVersion": 1, "notes": "This stickyNote node performs automated tasks as part of the workflow."}], "pinData": {}, "connections": {"3b40d506-aabc-4105-853a-a318375cea73": 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