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Monitor Brand Reputation for Negative Pr on Reddit with Gemini + Langchain +…

Original n8n title: Monitor Brand Reputation for Negative Pr on Reddit with Gemini + Langchain + Sheets

Byiamvaar @iamvaar on n8n.io

This workflow automates the entire process of monitoring online reputation by scanning Reddit posts for negative sentiment about your company, filtering only the relevant criticism, and logging it directly into Google Sheets for easy tracking.

Cron / scheduled trigger★★★★☆ complexityAI-powered10 nodesGoogle SheetsHTTP RequestAgentLm Chat Google VertexOutput Parser Structured
AI & RAG Trigger: Cron / scheduled Nodes: 10 Complexity: ★★★★☆ AI nodes: yes Added:

This workflow corresponds to n8n.io template #7473 — we link there as the canonical source.

This workflow follows the Agent → Google Sheets recipe pattern — see all workflows that pair these two integrations.

The workflow JSON

Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →

Download .json
{
  "meta": {
    "templateCredsSetupCompleted": true
  },
  "nodes": [
    {
      "id": "5fd46f9a-1249-425f-87be-bdf4ade9942b",
      "name": "Schedule Trigger1",
      "type": "n8n-nodes-base.scheduleTrigger",
      "position": [
        128,
        96
      ],
      "parameters": {},
      "typeVersion": 1.2
    },
    {
      "id": "222a0498-76d4-400a-a2a8-03a56a7588cd",
      "name": "Extract Post Metadata1",
      "type": "n8n-nodes-base.set",
      "position": [
        576,
        96
      ],
      "parameters": {},
      "typeVersion": 3.4
    },
    {
      "id": "9738e2da-6af2-4c65-a129-dfbbadaafd01",
      "name": "Seperate array into individual posts1",
      "type": "n8n-nodes-base.splitOut",
      "position": [
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        96
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "f37847d0-7934-4a9e-aed2-3e77f0614dac",
      "name": "Append to Google Sheets",
      "type": "n8n-nodes-base.googleSheets",
      "position": [
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      ],
      "parameters": {},
      "typeVersion": 4.6
    },
    {
      "id": "663a5764-bb73-43b3-8fb2-131879c0f2de",
      "name": "Code",
      "type": "n8n-nodes-base.code",
      "position": [
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        96
      ],
      "parameters": {},
      "typeVersion": 2
    },
    {
      "id": "07a53cf0-3ad1-486a-bf99-7831ad1b313c",
      "name": "Look for Latest posts",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        352,
        96
      ],
      "parameters": {},
      "typeVersion": 4.2
    },
    {
      "id": "92b25221-e542-48f0-ad97-1a85b39d73d2",
      "name": "AI Agent",
      "type": "@n8n/n8n-nodes-langchain.agent",
      "position": [
        1040,
        96
      ],
      "parameters": {},
      "typeVersion": 2.1
    },
    {
      "id": "625b1e0a-fb13-45af-bf80-c4dd4280f26c",
      "name": "Google Vertex Chat Model",
      "type": "@n8n/n8n-nodes-langchain.lmChatGoogleVertex",
      "position": [
        1024,
        400
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "35e66e1d-4790-4d14-8984-5b7d461e2397",
      "name": "Structured Output Parser",
      "type": "@n8n/n8n-nodes-langchain.outputParserStructured",
      "position": [
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        400
      ],
      "parameters": {},
      "typeVersion": 1.3
    },
    {
      "id": "ccd6e80d-d6c4-4032-8498-b5cf0d34413b",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -816,
        -192
      ],
      "parameters": {
        "content": ""
      },
      "typeVersion": 1
    }
  ],
  "connections": {
    "Code": {
      "main": [
        [
          {
            "node": "Append to Google Sheets",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "AI Agent": {
      "main": [
        [
          {
            "node": "Code",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Schedule Trigger1": {
      "main": [
        [
          {
            "node": "Look for Latest posts",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Look for Latest posts": {
      "main": [
        [
          {
            "node": "Extract Post Metadata1",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Extract Post Metadata1": {
      "main": [
        [
          {
            "node": "Seperate array into individual posts1",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Google Vertex Chat Model": {
      "ai_languageModel": [
        [
          {
            "node": "AI Agent",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    },
    "Structured Output Parser": {
      "ai_outputParser": [
        [
          {
            "node": "AI Agent",
            "type": "ai_outputParser",
            "index": 0
          }
        ]
      ]
    },
    "Seperate array into individual posts1": {
      "main": [
        [
          {
            "node": "AI Agent",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}
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About this workflow

This workflow automates the entire process of monitoring online reputation by scanning Reddit posts for negative sentiment about your company, filtering only the relevant criticism, and logging it directly into Google Sheets for easy tracking.

Source: https://n8n.io/workflows/7473/ — original creator credit. Request a take-down →

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