LinkedIn Auto-Reply DMs with Smart Resource Matching

The workflow JSON

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{
  "id": "wk6WjT2zWgwUiTlK",
  "name": "LinkedIn Auto-Reply Workflow with Smart Resource Delivery",
  "tags": [],
  "nodes": [
    {
      "id": "5df2657c-0cc3-4cf8-8451-01a7a2aaa073",
      "name": "Every 5 Minutes",
      "type": "n8n-nodes-base.scheduleTrigger",
      "notes": "Runs every 5 minutes to check for new LinkedIn comments",
      "position": [
        -128,
        848
      ],
      "parameters": {
        "rule": {
          "interval": [
            {
              "field": "minutes"
            }
          ]
        }
      },
      "notesInFlow": true,
      "typeVersion": 1.2
    },
    {
      "id": "c15f846b-5b11-4e74-ab8f-09c2884ca023",
      "name": "Fetch Recent Posts",
      "type": "n8n-nodes-base.linkedIn",
      "notes": "Gets your 10 most recent LinkedIn posts",
      "position": [
        96,
        848
      ],
      "parameters": {
        "operation": "getAll",
        "authentication": "oAuth2"
      },
      "notesInFlow": true,
      "typeVersion": 1
    },
    {
      "id": "5a0de7f6-4adb-403d-9968-3929f0a7c089",
      "name": "Fetch Post Comments",
      "type": "n8n-nodes-base.linkedIn",
      "notes": "Retrieves all comments from each post (up to 20 per post)",
      "position": [
        320,
        848
      ],
      "parameters": {
        "resource": "comment",
        "authentication": "oAuth2"
      },
      "notesInFlow": true,
      "typeVersion": 1
    },
    {
      "id": "90fd1e95-4801-4c06-ad00-7c11eac13099",
      "name": "Remove Own Comments",
      "type": "n8n-nodes-base.filter",
      "notes": "Filters out your own comments to prevent self-messaging",
      "position": [
        544,
        848
      ],
      "parameters": {
        "options": {},
        "conditions": {
          "options": {
            "leftValue": "",
            "caseSensitive": false,
            "typeValidation": "strict"
          },
          "combinator": "and",
          "conditions": [
            {
              "id": "3c4d5e6f-7g8h-9i0j-1k2l-m3n4o5p6q7r8",
              "operator": {
                "type": "string",
                "operation": "notEquals"
              },
              "leftValue": "={{ $json.author.id }}",
              "rightValue": "={{ $('Fetch Recent Posts').item.json.author.id }}"
            }
          ]
        }
      },
      "notesInFlow": true,
      "typeVersion": 2
    },
    {
      "id": "adeb662f-0e35-450e-8212-9afa27386fca",
      "name": "Combine Comment and Post",
      "type": "n8n-nodes-base.merge",
      "notes": "Merges comment data with original post context",
      "position": [
        768,
        848
      ],
      "parameters": {
        "mode": "combine",
        "options": {}
      },
      "notesInFlow": true,
      "typeVersion": 3
    },
    {
      "id": "1eb2db53-0361-4847-8f89-2499aa679ad9",
      "name": "Track Processed Comments",
      "type": "n8n-nodes-base.code",
      "notes": "Prevents duplicate messages using workflow static data",
      "position": [
        992,
        848
      ],
      "parameters": {
        "mode": "runOnceForEachItem",
        "jsCode": "// Check if we've already sent a DM to this commenter on this post\nconst commentId = $input.item.json.id;\nconst authorId = $input.item.json.author.id;\nconst postId = $input.item.json.postId || 'unknown';\n\n// Create a unique key for this comment\nconst uniqueKey = `${postId}_${authorId}_${commentId}`;\n\n// Use workflow static data to store processed comments\nconst processedComments = $getWorkflowStaticData('global').processedComments || {};\n\nif (processedComments[uniqueKey]) {\n  // Already processed this comment\n  return { json: { skip: true, reason: 'Already processed' } };\n}\n\n// Mark as processed\nprocessedComments[uniqueKey] = {\n  timestamp: new Date().toISOString(),\n  processed: true\n};\n\n// Clean up old entries (older than 30 days)\nconst thirtyDaysAgo = Date.now() - (30 * 24 * 60 * 60 * 1000);\nfor (const key in processedComments) {\n  const entryTime = new Date(processedComments[key].timestamp).getTime();\n  if (entryTime < thirtyDaysAgo) {\n    delete processedComments[key];\n  }\n}\n\n// Save back to static data\n$getWorkflowStaticData('global').processedComments = processedComments;\n\nreturn { \n  json: { \n    skip: false, \n    ...($input.item.json),\n    uniqueKey \n  } \n};"
      },
      "notesInFlow": true,
      "typeVersion": 2
    },
    {
      "id": "44a95a29-09f7-4b89-8b53-405ca6e501f0",
      "name": "Rate Limit Delay",
      "type": "n8n-nodes-base.wait",
      "notes": "Adds delay to avoid LinkedIn rate limits",
      "position": [
        1200,
        848
      ],
      "parameters": {
        "amount": 2
      },
      "notesInFlow": true,
      "typeVersion": 1.1
    },
    {
      "id": "c0b81984-43fb-4d57-b981-a93d12ba1648",
      "name": "Only New Comments",
      "type": "n8n-nodes-base.filter",
      "notes": "Filters to unprocessed comments only",
      "position": [
        1424,
        848
      ],
      "parameters": {
        "options": {},
        "conditions": {
          "options": {
            "leftValue": "",
            "caseSensitive": false,
            "typeValidation": "strict"
          },
          "combinator": "and",
          "conditions": [
            {
              "id": "7g8h9i0j-1k2l-3m4n-5o6p-q7r8s9t0u1v2",
              "operator": {
                "type": "boolean",
                "operation": "equals"
              },
              "leftValue": "={{ $json.skip }}",
              "rightValue": "false"
            }
          ]
        }
      },
      "notesInFlow": true,
      "typeVersion": 2
    },
    {
      "id": "a9acec03-c9c4-4d22-bc8d-68c9a1a9fa0d",
      "name": "Match Resource to Comment",
      "type": "n8n-nodes-base.code",
      "notes": "Analyzes comment content and selects most relevant resource",
      "position": [
        1648,
        848
      ],
      "parameters": {
        "mode": "runOnceForEachItem",
        "jsCode": "// Analyze comment to determine relevant resource\nconst commentText = ($input.item.json.text || '').toLowerCase();\nconst postText = ($input.item.json.postText || '').toLowerCase();\n\n// Keywords for different resource categories\nconst resourceMap = {\n  'ebook': {\n    keywords: ['learn', 'guide', 'tutorial', 'how to', 'beginner', 'start', 'ebook', 'book', 'read'],\n    resource: {\n      title: '\ud83d\udcda Free eBook: Complete Guide to LinkedIn Marketing',\n      url: 'https://yourwebsite.com/linkedin-marketing-ebook',\n      description: 'A comprehensive guide covering everything from profile optimization to content strategy.'\n    }\n  },\n  'webinar': {\n    keywords: ['watch', 'video', 'webinar', 'training', 'course', 'learn more', 'session'],\n    resource: {\n      title: '\ud83c\udfa5 Free Webinar: Advanced LinkedIn Strategies',\n      url: 'https://yourwebsite.com/webinar-registration',\n      description: 'Join our live webinar to learn advanced tactics from industry experts.'\n    }\n  },\n  'template': {\n    keywords: ['template', 'example', 'sample', 'format', 'structure', 'framework'],\n    resource: {\n      title: '\ud83d\udccb Free Templates: LinkedIn Content Calendar',\n      url: 'https://yourwebsite.com/content-templates',\n      description: 'Download our proven templates to plan and organize your LinkedIn content.'\n    }\n  },\n  'tool': {\n    keywords: ['tool', 'software', 'app', 'automate', 'automation', 'schedule', 'analytics'],\n    resource: {\n      title: '\ud83d\udee0\ufe0f Free Tool: LinkedIn Analytics Dashboard',\n      url: 'https://yourwebsite.com/analytics-tool',\n      description: 'Track your LinkedIn performance with our free analytics dashboard.'\n    }\n  },\n  'checklist': {\n    keywords: ['checklist', 'steps', 'process', 'list', 'tips', 'best practices'],\n    resource: {\n      title: '\u2705 Free Checklist: LinkedIn Profile Optimization',\n      url: 'https://yourwebsite.com/profile-checklist',\n      description: 'A step-by-step checklist to optimize your LinkedIn profile for maximum visibility.'\n    }\n  }\n};\n\n// Determine which resource to send\nlet selectedResource = null;\nlet maxMatches = 0;\n\nfor (const [category, data] of Object.entries(resourceMap)) {\n  let matches = 0;\n  for (const keyword of data.keywords) {\n    if (commentText.includes(keyword) || postText.includes(keyword)) {\n      matches++;\n    }\n  }\n  \n  if (matches > maxMatches) {\n    maxMatches = matches;\n    selectedResource = data.resource;\n  }\n}\n\n// Default resource if no specific match\nif (!selectedResource) {\n  selectedResource = {\n    title: '\ud83c\udf81 Free Resource Pack: LinkedIn Success Bundle',\n    url: 'https://yourwebsite.com/linkedin-bundle',\n    description: 'Get access to our complete resource pack including guides, templates, and tools.'\n  };\n}\n\nreturn {\n  json: {\n    ...($input.item.json),\n    selectedResource,\n    commenterName: $input.item.json.author?.firstName || 'there'\n  }\n};"
      },
      "notesInFlow": true,
      "typeVersion": 2
    },
    {
      "id": "fd16c4dd-d8e4-404e-8471-db0442b4f0f9",
      "name": "Build Personalized Message",
      "type": "n8n-nodes-base.code",
      "notes": "Generates personalized DM with commenter's name and resource",
      "position": [
        1872,
        848
      ],
      "parameters": {
        "mode": "runOnceForEachItem",
        "jsCode": "// Create personalized message\nconst commenterName = $input.item.json.commenterName;\nconst resource = $input.item.json.selectedResource;\n\nconst message = `Hi ${commenterName}! \ud83d\udc4b\n\nThank you so much for engaging with my post! I really appreciate your comment.\n\nI thought you might find this helpful:\n\n${resource.title}\n${resource.description}\n\n\ud83d\udd17 Access it here: ${resource.url}\n\nFeel free to reach out if you have any questions. Happy to help! \ud83d\ude80\n\nBest regards`;\n\nreturn {\n  json: {\n    ...($input.item.json),\n    messageToSend: message\n  }\n};"
      },
      "notesInFlow": true,
      "typeVersion": 2
    },
    {
      "id": "836850e7-067a-4863-8949-63686fde80b8",
      "name": "Send DM via LinkedIn",
      "type": "n8n-nodes-base.linkedIn",
      "notes": "Delivers the direct message to the commenter",
      "position": [
        2160,
        848
      ],
      "parameters": {
        "resource": "message",
        "authentication": "oAuth2"
      },
      "notesInFlow": true,
      "typeVersion": 1
    },
    {
      "id": "aabec416-e03f-43a6-a3a6-d258280ee933",
      "name": "Log Delivery Status",
      "type": "n8n-nodes-base.code",
      "notes": "Records successful message delivery for tracking",
      "position": [
        2384,
        848
      ],
      "parameters": {
        "mode": "runOnceForEachItem",
        "jsCode": "// Log successful send\nconst timestamp = new Date().toISOString();\nconst commenterName = $input.item.json.commenterName;\nconst resourceTitle = $input.item.json.selectedResource.title;\n\nconsole.log(`\u2705 SUCCESS: Sent resource \"${resourceTitle}\" to ${commenterName} at ${timestamp}`);\n\nreturn {\n  json: {\n    success: true,\n    timestamp,\n    commenterName,\n    resourceSent: resourceTitle,\n    commentId: $input.item.json.id\n  }\n};"
      },
      "notesInFlow": true,
      "typeVersion": 2
    },
    {
      "id": "94582886-f0ba-41ac-8682-b701e3df87d5",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -928,
        464
      ],
      "parameters": {
        "width": 636,
        "height": 776,
        "content": "## Auto-reply to LinkedIn comments with personalized resources\n\nThis workflow monitors your LinkedIn posts for new comments and automatically sends personalized direct messages with relevant resources to commenters.\n\n## How it works\n\n1. **Monitor posts**: Every 5 minutes, the workflow fetches your 10 most recent LinkedIn posts\n2. **Collect comments**: Retrieves all comments from each post (up to 20 per post)\n3. **Filter engagement**: Removes your own comments and tracks previously contacted users\n4. **Smart matching**: Analyzes comment text using keyword matching to determine the most relevant resource (eBook, webinar, template, tool, or checklist)\n5. **Personalize message**: Creates a custom DM with the commenter's name and selected resource\n6. **Send and track**: Delivers the message via LinkedIn and logs the interaction\n\n## Setup steps\n\n1. **Connect LinkedIn**: Add your LinkedIn OAuth2 credentials to these nodes:\n   - Fetch Recent Posts\n   - Fetch Post Comments\n   - Send DM via LinkedIn\n\n2. **Update resource URLs**: Open the \"Match Resource to Comment\" node and replace all `https://yourwebsite.com/...` URLs with your actual resource links\n\n3. **Customize message** (optional): Edit the \"Build Personalized Message\" node to adjust the DM template and tone\n\n4. **Test first**: Click \"Execute Workflow\" to test before activating. Check the execution log to verify it works correctly\n\n5. **Activate**: Once tested, toggle the workflow to \"Active\" to run automatically every 5 minutes\n\n"
      },
      "typeVersion": 1
    },
    {
      "id": "1c508416-773c-4c8f-9922-f3f7daa46745",
      "name": "Sticky Note4",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -176,
        688
      ],
      "parameters": {
        "color": 6,
        "width": 640,
        "height": 336,
        "content": "## \ud83d\udce5 Data Collection"
      },
      "typeVersion": 1
    },
    {
      "id": "e86e64a1-c3d7-4467-b08e-dbc92a62878e",
      "name": "Sticky Note5",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        480,
        688
      ],
      "parameters": {
        "color": 4,
        "width": 1088,
        "height": 320,
        "content": "## \ud83d\udd0d Smart Filtering"
      },
      "typeVersion": 1
    },
    {
      "id": "7d8d06dc-cd7a-4845-82d7-e1d26205f0f3",
      "name": "Sticky Note6",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1600,
        688
      ],
      "parameters": {
        "color": 6,
        "width": 464,
        "height": 336,
        "content": "## \ud83e\udde0 Resource Matching"
      },
      "typeVersion": 1
    },
    {
      "id": "5befb33e-7494-42a1-b4a4-ffdda316bed2",
      "name": "Sticky Note7",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        2096,
        688
      ],
      "parameters": {
        "color": 4,
        "width": 464,
        "height": 368,
        "content": "## \ud83d\udce8 Message Delivery"
      },
      "typeVersion": 1
    }
  ],
  "active": false,
  "settings": {
    "executionOrder": "v1"
  },
  "versionId": "bd52e147-07f1-4ca4-a13d-6845f7e71abd",
  "connections": {
    "Every 5 Minutes": {
      "main": [
        [
          {
            "node": "Fetch Recent Posts",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Rate Limit Delay": {
      "main": [
        [
          {
            "node": "Only New Comments",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Only New Comments": {
      "main": [
        [
          {
            "node": "Match Resource to Comment",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Fetch Recent Posts": {
      "main": [
        [
          {
            "node": "Fetch Post Comments",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Fetch Post Comments": {
      "main": [
        [
          {
            "node": "Remove Own Comments",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Remove Own Comments": {
      "main": [
        [
          {
            "node": "Combine Comment and Post",
            "type": "main",
            "index": 0
          },
          {
            "node": "Combine Comment and Post",
            "type": "main",
            "index": 1
          }
        ]
      ]
    },
    "Send DM via LinkedIn": {
      "main": [
        [
          {
            "node": "Log Delivery Status",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Combine Comment and Post": {
      "main": [
        [
          {
            "node": "Track Processed Comments",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Track Processed Comments": {
      "main": [
        [
          {
            "node": "Rate Limit Delay",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Match Resource to Comment": {
      "main": [
        [
          {
            "node": "Build Personalized Message",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Build Personalized Message": {
      "main": [
        [
          {
            "node": "Send DM via LinkedIn",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}

About this workflow

This automated n8n workflow enables intelligent auto-replies to LinkedIn comments by sending personalized direct messages (DMs) with relevant resources. When users comment on your posts, the workflow monitors engagement, filters valid interactions, analyzes comment content using…

Source: https://n8n.io/workflows/11110/ — original creator credit. Request a take-down →

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