{"workflow":{"id":14381,"name":"Generate AI document titles for Paperless-ngx with GPT-4o Mini","views":15,"recentViews":4,"totalViews":15,"createdAt":"2026-03-27T00:05:00.927Z","description":"## What it does\nThis template automatically generates a professional, structured title for newly-ingested Paperless-ngx documents using AI (OpenAI GPT), then removes a processing tag to mark the document as handled.\n\n## How it works\n1. A webhook fires when a document needs titling (e.g., from a Paperless post-consumption script)\n2. The document URL is validated, then the OCR text is fetched from the Paperless API\n3. All PII is scrubbed from the text using n8n's Guardrails node before sending to AI\n4. GPT generates a title using the format: `[YYYY-MM-DD] - [Document Type] - [Subject]`\n5. The specified processing tag is looked up and removed, then the document is updated\n\n## Requirements\n- An AI provider account, such as OpenAI, Anthropic, Gemini. As configured the template uses OpenAI, but any model should work.\n- A running Paperless-ngx instance that has network accessibility to your n8n server\n  \n## How to use\nNeeds to be set up in conjunction with a running Paperless-ngx instance. See Paperless-ngx instructions [here](https://purplesquirreltechnology.com/2026/03/20/automatically-title-your-documents-with-ai-using-paperless-ngx-and-n8n/)\n\n## Customization\n- Edit the system message in the AI Agent node (Generate Document Name) to change the document naming convention and other guidelines\n- Change the workflows on your Paperless-ngx instance to suit different needs.","workflow":{"id":"ica4EwxtFqquNriy","meta":{"instanceId":"d9083dfed9200b5362cfb114c88454aae6047c9ae8c3ce018c39caecfd889961","templateCredsSetupCompleted":true},"name":"Set Paperless Document Title w/Tag Removal","tags":[],"nodes":[{"id":"dac1caa7-ca26-4712-bbcf-f26f04b2cd52","name":"Sticky Note","type":"n8n-nodes-base.stickyNote","position":[-80,832],"parameters":{"width":480,"height":656,"content":"## Set Paperless Document Title w/Tag Removal\n\n### How it works\n\n1. The workflow is triggered by a webhook when a title needs updating.\n2. Validates the incoming URL provided in the webhook.\n3. Fetches document content based on the valid URL.\n4. Uses AI to generate a new document name.\n5. Removes unnecessary tags and updates the document title.\n\n### Setup steps\n\n- [ ] Configure the Webhook node to receive update requests.\n- [ ] Set up the API authentication details for all HTTP Request nodes.\n- [ ] Ensure the AI Agent has access to required models like OpenAI Chat.\n\n### Customization\n\nAdjustment of tags to remove can be customized in the \"Filter Out Tag to Remove\" code node."},"typeVersion":1},{"id":"41e686d7-717f-4e22-a0bd-bbb2738aedf0","name":"Sticky Note1","type":"n8n-nodes-base.stickyNote","position":[480,928],"parameters":{"color":7,"width":640,"height":464,"content":"## Trigger and validation\n\nStarts workflow on webhook and validates the URL."},"typeVersion":1},{"id":"03ff65d0-e543-4ab2-9abd-848f2508cbcb","name":"Sticky Note2","type":"n8n-nodes-base.stickyNote","position":[1152,928],"parameters":{"color":7,"width":640,"height":368,"content":"## Fetch and evaluate document\n\nFetches document content and checks if it needs processing."},"typeVersion":1},{"id":"e377cc84-6766-4b24-8db5-f59dfef5f4b2","name":"Sticky Note3","type":"n8n-nodes-base.stickyNote","position":[1584,832],"parameters":{"color":7,"width":576,"height":480,"content":"## AI document name generation\n\nGenerates a new document name using AI."},"typeVersion":1},{"id":"fb80dceb-53f1-4aa9-9d12-9cb1bd539856","name":"Sticky Note4","type":"n8n-nodes-base.stickyNote","position":[2176,832],"parameters":{"color":7,"width":640,"height":272,"content":"## Tag removal and update\n\nIdentifies and removes unnecessary tags, then updates the document."},"typeVersion":1},{"id":"7501a8b0-010d-4f12-a938-c35bce1553a3","name":"Fetch Document Content","type":"n8n-nodes-base.httpRequest","position":[1200,1040],"parameters":{"url":"={{ $json.scheme }}://{{ $json.server }}/api/documents/{{ $json.documentId }}/","options":{"response":{"response":{"fullResponse":true}}},"authentication":"genericCredentialType","genericAuthType":"httpBasicAuth"},"credentials":{"httpBasicAuth":{"id":"Xi9mYmRp4gh7M6Od","name":"n8n-automation user"}},"retryOnFail":true,"typeVersion":4.3},{"id":"eae50ac5-0899-497c-88ee-3c9c1b5ada13","name":"Apply Document Guardrails","type":"@n8n/n8n-nodes-langchain.guardrails","position":[1648,944],"parameters":{"text":"={{ $json.body.content }}","operation":"sanitize","guardrails":{"pii":{"value":{"type":"all"}}}},"typeVersion":2},{"id":"29811062-625a-4362-a0f4-001a80d4d5ba","name":"Generate Title AI Agent","type":"@n8n/n8n-nodes-langchain.agent","position":[1872,944],"parameters":{"text":"={{ $json.guardrailsInput.substring(0, 10000) }}","options":{"systemMessage":"Role: You are an expert Document Archivist and Information Architect. Your task is to analyze the text provided, which has been generated via OCR (Optical Character Recognition) from scanned documents.\n\nTask: Generate a concise, descriptive, and professional title for the document based on its primary subject matter, intent, and key entities (e.g., companies, dates, or specific project names).\n\nGuidelines:\n\n    Contextual Accuracy: Prioritize formal headers, dates, and recurring keywords to determine the document type (e.g., Invoice, Technical Specification, Meeting Minutes, Contract).\n\n    OCR Resilience: Ignore \"noise\" typical of OCR, such as garbled characters, misread page numbers, or fragmented headers.\n\n    Format: Output only the suggested title. Limit the length to no more than 60 characters. Do not include introductory text like \"The title is...\" or \"I suggest...\"\n\n    Naming Convention: Use a standard format: [YYYY-MM-DD] - [Document Type] - [Main Subject/Entity]. If a date is not found, omit it.\n\nTone: Professional and objective."},"promptType":"define"},"notesInFlow":false,"typeVersion":3.1,"alwaysOutputData":false},{"id":"c4e951f8-75b7-4c35-8663-2ec94dfd1f87","name":"OpenAI GPT-4 Mini","type":"@n8n/n8n-nodes-langchain.lmChatOpenAi","position":[1944,1168],"parameters":{"model":{"__rl":true,"mode":"list","value":"gpt-4o-mini","cachedResultName":"GPT-4o Mini"},"options":{"maxTokens":4096},"builtInTools":{}},"credentials":{"openAiApi":{"id":"xtvy7ecVu74EVRUl","name":"OpenAi account"}},"typeVersion":1.3},{"id":"be586407-249a-4843-a02b-aa7e120010d9","name":"Interrupt on Invalid URL","type":"n8n-nodes-base.stopAndError","position":[976,1232],"parameters":{"errorMessage":"Input value for doc_url is not a url."},"typeVersion":1},{"id":"c81573f7-2c8c-4f90-b440-bed570249b73","name":"Set URL Components","type":"n8n-nodes-base.set","position":[976,1040],"parameters":{"options":{},"assignments":{"assignments":[{"id":"a734fa97-0bca-485b-8ce3-ae328c3d0e8d","name":"server","type":"string","value":"={{ $json.body['x-doc-url'].extractDomain() }}"},{"id":"b2d29825-7452-4657-aed2-da4413f72cb7","name":"scheme","type":"string","value":"={{ $json.body['x-doc-url'].split(':')[0] }}"},{"id":"853b2b68-2389-4a31-82c9-a95ad9a51f4e","name":"documentId","type":"string","value":"={{ (() => {\nconst path = $json.body['x-doc-url'].extractUrlPath().split('/');\nconst id = path[path.length - 2];\nreturn id;\n})() }}"}]}},"typeVersion":3.4},{"id":"9890ada3-e94a-462a-bead-4a9639b61701","name":"Check URL Validity","type":"n8n-nodes-base.if","position":[752,1136],"parameters":{"options":{},"conditions":{"options":{"version":3,"leftValue":"","caseSensitive":true,"typeValidation":"strict"},"combinator":"and","conditions":[{"id":"187466b4-2c51-40ca-bb84-b53209fa24a8","operator":{"type":"boolean","operation":"true","singleValue":true},"leftValue":"={{ $json.body['x-doc-url'].isUrl() }}","rightValue":""}]}},"typeVersion":2.3},{"id":"07ecb804-889a-4f81-b687-048a4a5e0c29","name":"Fetch Removal Tag ID","type":"n8n-nodes-base.httpRequest","position":[2224,944],"parameters":{"url":"={{ $('Set URL Components').first().json.scheme }}://{{ $('Set URL Components').first().json.server }}/api/tags/?name__iexact={{ $('When Title Update Requested').item.json.body['x-tag-to-remove'] }}","options":{},"authentication":"genericCredentialType","genericAuthType":"httpBasicAuth"},"credentials":{"httpBasicAuth":{"id":"Xi9mYmRp4gh7M6Od","name":"n8n-automation user"}},"typeVersion":4.4},{"id":"5b685cba-fc5a-4d95-8a86-c39f9806f4a1","name":"Execute Tag Removal","type":"n8n-nodes-base.code","position":[2448,944],"parameters":{"jsCode":"// Using ?. to safely navigate and ?? to provide a default empty array\nconst tagIdToRemove = $('Fetch Removal Tag ID').first()?.json?.results?.[0]?.id;\nconst currentTags = $('Fetch Document Content').first()?.json?.body?.tags ?? [];\n\n// If tagIdToRemove is undefined, the filter simply returns the full currentTags array\nconst updatedTags = currentTags.filter(id => id !== tagIdToRemove);\n\nreturn {\n  updatedTags: updatedTags\n};"},"typeVersion":2},{"id":"4b6ca323-c425-4f11-8cc9-17b67c26bb8e","name":"Terminate Process","type":"n8n-nodes-base.noOp","position":[1648,1136],"parameters":{},"typeVersion":1},{"id":"4001cfee-0f64-4485-9482-b3676d6e31ab","name":"Apply Document Updates","type":"n8n-nodes-base.httpRequest","position":[2672,944],"parameters":{"url":"={{ $('Set URL Components').first().json.scheme }}://{{ $('Set URL Components').first().json.server }}/api/documents/{{ $('Set URL Components').last().json.documentId }}/","method":"PATCH","options":{},"sendBody":true,"authentication":"genericCredentialType","bodyParameters":{"parameters":[{"name":"title","value":"={{ $('Generate Title AI Agent').first().json.output }}"},{"name":"tags","value":"={{ $json.updatedTags }}"}]},"genericAuthType":"httpBasicAuth"},"credentials":{"httpBasicAuth":{"id":"Xi9mYmRp4gh7M6Od","name":"n8n-automation user"}},"retryOnFail":true,"typeVersion":4.3},{"id":"a5c92cd2-7a5f-43c0-a7eb-dc3361fa2726","name":"If Document Content Exists","type":"n8n-nodes-base.if","position":[1424,1040],"parameters":{"options":{},"conditions":{"options":{"version":3,"leftValue":"","caseSensitive":true,"typeValidation":"strict"},"combinator":"or","conditions":[{"id":"5fbec441-1f29-4e12-8cc1-c2a48e814e2c","operator":{"type":"string","operation":"exists","singleValue":true},"leftValue":"={{ $json.body.content }}","rightValue":""}]}},"typeVersion":2.3},{"id":"ce5ef9c8-ae58-478b-8e8d-9905321ad780","name":"When Title Update Requested","type":"n8n-nodes-base.webhook","position":[528,1136],"webhookId":"f1f6adff-8673-41a9-bb0e-0d2c0581f667","parameters":{"path":"update-document-title","options":{},"httpMethod":"POST","authentication":"headerAuth"},"credentials":{"httpHeaderAuth":{"id":"wgOUhIdRxcyUf5da","name":"N8N Webhook Auth"}},"typeVersion":2.1}],"active":true,"pinData":{},"settings":{"binaryMode":"separate","callerPolicy":"workflowsFromSameOwner","availableInMCP":false,"executionOrder":"v1"},"versionId":"aea605f3-fc39-48ca-948d-159ec0695e03","connections":{"OpenAI GPT-4 Mini":{"ai_languageModel":[[{"node":"Generate Title AI Agent","type":"ai_languageModel","index":0}]]},"Check URL Validity":{"main":[[{"node":"Set URL Components","type":"main","index":0}],[{"node":"Interrupt on Invalid URL","type":"main","index":0}]]},"Set URL Components":{"main":[[{"node":"Fetch Document Content","type":"main","index":0}]]},"Execute Tag Removal":{"main":[[{"node":"Apply Document Updates","type":"main","index":0}]]},"Fetch Removal Tag ID":{"main":[[{"node":"Execute Tag Removal","type":"main","index":0}]]},"Fetch Document Content":{"main":[[{"node":"If Document Content Exists","type":"main","index":0}]]},"Generate Title AI Agent":{"main":[[{"node":"Fetch Removal Tag ID","type":"main","index":0}]]},"Apply Document Guardrails":{"main":[[{"node":"Generate Title AI Agent","type":"main","index":0}]]},"If Document Content Exists":{"main":[[{"node":"Apply Document Guardrails","type":"main","index":0}],[{"node":"Terminate Process","type":"main","index":0}]]},"When Title Update Requested":{"main":[[{"node":"Check URL Validity","type":"main","index":0}]]}}},"lastUpdatedBy":1,"workflowInfo":{"nodeCount":18,"nodeTypes":{"n8n-nodes-base.if":{"count":2},"n8n-nodes-base.set":{"count":1},"n8n-nodes-base.code":{"count":1},"n8n-nodes-base.noOp":{"count":1},"n8n-nodes-base.webhook":{"count":1},"n8n-nodes-base.stickyNote":{"count":5},"n8n-nodes-base.httpRequest":{"count":3},"n8n-nodes-base.stopAndError":{"count":1},"@n8n/n8n-nodes-langchain.agent":{"count":1},"@n8n/n8n-nodes-langchain.guardrails":{"count":1},"@n8n/n8n-nodes-langchain.lmChatOpenAi":{"count":1}}},"status":"published","readyToDemo":null,"user":{"name":"Warren Gates","username":"warrengates","bio":"Software developer with 10+ years of experience and a background in accounting. I bring a unique mix of technical skill and business understanding to every workflow I build. Whether you need to streamline operations or connect your tools, I focus on solutions that are easy to understand and easy to maintain.","verified":false,"links":["https://purplesquirreltechnology.com/"],"avatar":"https://gravatar.com/avatar/54422bb12f0c4042b72ed49a09e1a2ab251cdaae8a8bbd3500ca5d7451dc3d43?r=pg&d=retro&size=200"},"nodes":[{"id":19,"icon":"file:httprequest.svg","name":"n8n-nodes-base.httpRequest","codex":{"data":{"alias":["API","Request","URL","Build","cURL"],"resources":{"generic":[{"url":"https://n8n.io/blog/2021-the-year-to-automate-the-new-you-with-n8n/","icon":"☀️","label":"2021: The Year to Automate the New You with n8n"},{"url":"https://n8n.io/blog/why-business-process-automation-with-n8n-can-change-your-daily-life/","icon":"🧬","label":"Why business process automation with n8n can change your daily life"},{"url":"https://n8n.io/blog/automatically-pulling-and-visualizing-data-with-n8n/","icon":"📈","label":"Automatically pulling and visualizing data with n8n"},{"url":"https://n8n.io/blog/learn-how-to-automatically-cross-post-your-content-with-n8n/","icon":"✍️","label":"Learn how to automatically cross-post your content with n8n"},{"url":"https://n8n.io/blog/automatically-adding-expense-receipts-to-google-sheets-with-telegram-mindee-twilio-and-n8n/","icon":"🧾","label":"Automatically Adding Expense Receipts to Google Sheets with Telegram, Mindee, Twilio, and n8n"},{"url":"https://n8n.io/blog/running-n8n-on-ships-an-interview-with-maranics/","icon":"🛳","label":"Running n8n on ships: An interview with Maranics"},{"url":"https://n8n.io/blog/what-are-apis-how-to-use-them-with-no-code/","icon":" 🪢","label":"What are APIs and how to use them with no code"},{"url":"https://n8n.io/blog/5-tasks-you-can-automate-with-notion-api/","icon":"⚡️","label":"5 tasks you can automate with the new Notion API "},{"url":"https://n8n.io/blog/world-poetry-day-workflow/","icon":"📜","label":"Celebrating World Poetry Day with a daily poem in Telegram"},{"url":"https://n8n.io/blog/automate-google-apps-for-productivity/","icon":"💡","label":"15 Google apps you can combine and automate to increase productivity"},{"url":"https://n8n.io/blog/automate-designs-with-bannerbear-and-n8n/","icon":"🎨","label":"Automate Designs with Bannerbear and n8n"},{"url":"https://n8n.io/blog/how-uproc-scraped-a-multi-page-website-with-a-low-code-workflow/","icon":" 🕸️","label":"How uProc scraped a multi-page website with a low-code workflow"},{"url":"https://n8n.io/blog/building-an-expense-tracking-app-in-10-minutes/","icon":"📱","label":"Building an expense tracking app in 10 minutes"},{"url":"https://n8n.io/blog/5-workflow-automations-for-mattermost-that-we-love-at-n8n/","icon":"🤖","label":"5 workflow automations for Mattermost that we love at n8n"},{"url":"https://n8n.io/blog/how-to-use-the-http-request-node-the-swiss-army-knife-for-workflow-automation/","icon":"🧰","label":"How to use the HTTP Request Node - 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