AI Blog Post Generator with Web Search

The workflow JSON

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{
  "name": "AI Blog Post Generator with Web Search",
  "nodes": [
    {
      "parameters": {
        "toolDescription": "Use this tool to search the internet",
        "method": "POST",
        "url": "https://api.tavily.com/search",
        "sendBody": true,
        "specifyBody": "json",
        "jsonBody": "{\n    \"api_key\": \"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\",\n    \"query\": \"{searchTerm}\",\n    \"search_depth\": \"basic\",\n    \"include_answer\": true,\n    \"topic\": \"news\",\n    \"include_raw_content\": true,\n    \"max_results\": 3\n} ",
        "placeholderDefinitions": {
          "values": [
            {
              "name": "searchTerm",
              "description": "What the user requested to write the blog post about",
              "type": "string"
            }
          ]
        }
      },
      "type": "@n8n/n8n-nodes-langchain.toolHttpRequest",
      "typeVersion": 1.1,
      "position": [
        -240,
        360
      ],
      "id": "f0af74a9-9fde-4f1c-89c1-bb62df9bde7b",
      "name": "Tavily"
    },
    {
      "parameters": {
        "inputSource": "passthrough"
      },
      "type": "n8n-nodes-base.executeWorkflowTrigger",
      "typeVersion": 1.1,
      "position": [
        -700,
        80
      ],
      "id": "15fed980-0b2d-44e4-bea4-b4bf9fee8aba",
      "name": "When Executed by Another Workflow"
    },
    {
      "parameters": {
        "model": {
          "__rl": true,
          "mode": "list",
          "value": "gpt-4.1-mini"
        },
        "options": {}
      },
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "typeVersion": 1.2,
      "position": [
        -500,
        360
      ],
      "id": "b1361bc3-59e3-4d25-9541-4bfbb81bb0a9",
      "name": "OpenAI Chat Model",
      "credentials": {
        "openAiApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "assignments": {
          "assignments": [
            {
              "id": "14d9076e-27ea-4846-8b44-f83cf4022b9e",
              "name": "response",
              "value": "={{ $json.output }}",
              "type": "string"
            }
          ]
        },
        "options": {}
      },
      "type": "n8n-nodes-base.set",
      "typeVersion": 3.4,
      "position": [
        0,
        0
      ],
      "id": "aed27234-e758-4c8d-981d-d94c49cfe4bd",
      "name": "Sucesso"
    },
    {
      "parameters": {
        "assignments": {
          "assignments": [
            {
              "id": "f2a8ff2d-6b59-4ad6-a2e7-8705354f4105",
              "name": "response",
              "value": "Error occurred. Please try again.",
              "type": "string"
            }
          ]
        },
        "options": {}
      },
      "type": "n8n-nodes-base.set",
      "typeVersion": 3.4,
      "position": [
        0,
        180
      ],
      "id": "0907ae8c-8d4c-46f5-b525-83d58e9e863f",
      "name": "Erro"
    },
    {
      "parameters": {
        "promptType": "define",
        "text": "={{ $json.query}}",
        "options": {
          "systemMessage": "=# Vis\u00e3o Geral\nVoc\u00ea \u00e9 um redator de blogs habilidoso especializado em conte\u00fados envolventes, bem estruturados e informativos. Seu estilo de escrita \u00e9 claro, cativante e adaptado ao p\u00fablico-alvo. Voc\u00ea otimiza para legibilidade, SEO e valor, garantindo que os blogs sejam bem pesquisados, originais e livres de conte\u00fado irrelevante.\n\n## Ferramentas\nTavily - Use esta ferramenta para pesquisar na web sobre o tema solicitado para o post do blog.\n\n## Requisitos do Blog\nFormate todo o conte\u00fado do blog em HTML, utilizando cabe\u00e7alhos apropriados (<h1>, <h2>), par\u00e1grafos (<p>), listas com marcadores (<ul><li>) e links (<a href=\"URL\">) para cita\u00e7\u00f5es. Todas as cita\u00e7\u00f5es vindas da ferramenta Tavily devem ser preservadas, com hiperlinks clic\u00e1veis para que os leitores possam acessar as fontes originais.\n\nMantenha um tom natural e humano, utilize estruturas de frase variadas e inclua exemplos ou dados relevantes quando necess\u00e1rio. Estruture o conte\u00fado para f\u00e1cil leitura, com par\u00e1grafos concisos e fluxo l\u00f3gico. Sempre garanta precis\u00e3o factual e alinhe o tom com a marca ou prop\u00f3sito pretendido.\n"
        }
      },
      "type": "@n8n/n8n-nodes-langchain.agent",
      "typeVersion": 1.7,
      "position": [
        -440,
        80
      ],
      "id": "528bbf5a-87a8-4445-9f08-a8287e060be7",
      "name": "Criador de Conte\u00fado (Agente)",
      "onError": "continueErrorOutput"
    }
  ],
  "connections": {
    "Tavily": {
      "ai_tool": [
        [
          {
            "node": "Criador de Conte\u00fado (Agente)",
            "type": "ai_tool",
            "index": 0
          }
        ]
      ]
    },
    "When Executed by Another Workflow": {
      "main": [
        [
          {
            "node": "Criador de Conte\u00fado (Agente)",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "OpenAI Chat Model": {
      "ai_languageModel": [
        [
          {
            "node": "Criador de Conte\u00fado (Agente)",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    },
    "Criador de Conte\u00fado (Agente)": {
      "main": [
        [
          {
            "node": "Sucesso",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Erro",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": false,
  "settings": {
    "executionOrder": "v1"
  },
  "versionId": "387ef14a-bf9b-420d-80fb-e7aa7f6ab546",
  "meta": {
    "templateCredsSetupCompleted": true
  },
  "id": "J8Iul8lE1ihKrH76",
  "tags": []
}

Credentials you'll need

Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.

• openAiApi

About this workflow

AI Blog Post Generator with Web Search. Uses toolHttpRequest, executeWorkflowTrigger, lmChatOpenAi, agent. Event-driven trigger; 6 nodes.

Source: https://github.com/mesquitapetro-crypto/n8n-mcp-knowledge-base/blob/a6cc08e57184733dc87a55f53d291650cc52e9bc/workflows/ai-blog-post-generator-with-web-search.json — original creator credit. Request a take-down →

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