OpenAI, LangChain, API 통합을 사용한 작업 자동화 초보자 가이드

• •HTTP Webhook 엔드포인트(n8n이 자동으로 생성)
• •대상 API의 인증 정보가 필요할 수 있음
• •OpenAI API Key

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  "nodes": [
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      "name": "시작하기 - 수동 트리거",
      "type": "n8n-nodes-base.manualTrigger",
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    {
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      "position": [
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      "parameters": {
        "color": 4,
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        "content": "## Welcome to n8n!\n\nThis is a **Sticky Note** - used for documentation.\n\n### What you'll learn:\n1. **Triggers** - How workflows start\n2. **Data Processing** - Manipulating data\n3. **Conditionals** - Making decisions\n4. **API Calls** - External integrations\n5. **AI Agents** - Using LangChain\n\n👉 Click \"Execute Workflow\" to start!"
      },
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    {
      "id": "7e354aac-bf00-4137-b6a2-fb96971b27a9",
      "name": "초기 데이터 설정",
      "type": "n8n-nodes-base.set",
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    {
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      "name": "Set Node 정보",
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      "position": [
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      ],
      "parameters": {
        "color": 5,
        "width": 340,
        "height": 592,
        "content": "## Set Node\n\n**Purpose:** Create or modify data fields\n\n**Key Features:**\n- Add new fields to your data\n- Set static or dynamic values\n- Support for strings, numbers, booleans, arrays, objects\n\n**Expressions:**\n- `={{ $now }}` - Current timestamp\n- `={{ $workflow.name }}` - Workflow name\n- `={{ $json.fieldName }}` - Access previous data"
      },
      "typeVersion": 1
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    {
      "id": "6ed38d45-da78-4c65-80c3-31622b13df7a",
      "name": "Code Node - 사용자 정의 처리",
      "type": "n8n-nodes-base.code",
      "position": [
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      ],
      "parameters": {
        "jsCode": "// Code Node - Write custom JavaScript\n\n// Access all input items\nconst items = $input.all();\n\n// Process each item\nconst results = items.map((item, index) => {\n  const data = item.json;\n  \n  return {\n    json: {\n      // Keep original data\n      ...data,\n      // Add new calculated fields\n      doubled_number: data.sample_number * 2,\n      message_length: data.message.length,\n      processed_at: new Date().toISOString(),\n      item_index: index,\n      // Example of string manipulation\n      uppercase_message: data.message.toUpperCase(),\n      // Example array\n      tags: ['beginner', 'tutorial', 'n8n']\n    }\n  };\n});\n\nreturn results;"
      },
      "typeVersion": 2
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    {
      "id": "1721a18e-125b-4b05-a49a-61751809244d",
      "name": "Code Node 정보",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
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      "parameters": {
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        "content": "## Code Node\n\n**Purpose:** Execute custom JavaScript\n\n**Available Context:**\n- `$input.all()` - All input items\n- `$input.first()` - First item only\n- `$json` - Current item data\n\n**Built-in Libraries:**\n- lodash, moment, luxon\n- mathjs, uuid, crypto\n\n**Pattern:**\n```javascript\nconst items = $input.all();\nconst results = items.map(item => ({\n  json: { ...item.json, newField: 'value' }\n}));\nreturn results;\n```"
      },
      "typeVersion": 1
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    {
      "id": "b1b6de48-2d84-4133-a9ca-c40efd8d40cb",
      "name": "IF 조건 - 데이터 라우팅",
      "type": "n8n-nodes-base.if",
      "position": [
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      "parameters": {
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        "conditions": {
          "options": {
            "leftValue": "",
            "caseSensitive": true,
            "typeValidation": "strict"
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          "combinator": "and",
          "conditions": [
            {
              "id": "condition-001",
              "operator": {
                "type": "number",
                "operation": "smaller"
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              "leftValue": "={{ $json.sample_number }}",
              "rightValue": 50
            }
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    {
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      "name": "IF Node 정보",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
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        "content": "## IF Node\n\n**Purpose:** Conditional branching\n\n**Outputs:**\n- ✅ **True** - Condition met\n- ❌ **False** - Condition not met\n\n**Comparison Types:**\n- Number: equals, larger, smaller\n- String: equals, contains, regex\n- Boolean: true, false\n- Array: contains, length\n\n**Logic:**\n- AND - All conditions must be true\n- OR - Any condition can be true"
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      "name": "False 분기 데이터",
      "type": "n8n-nodes-base.set",
      "position": [
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      "parameters": {
        "options": {}
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    {
      "id": "35c673ad-958d-45fd-bf70-a659862ad007",
      "name": "두 분기 병합",
      "type": "n8n-nodes-base.merge",
      "position": [
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      ],
      "parameters": {
        "mode": "combine",
        "options": {}
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      "typeVersion": 3
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    {
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      "name": "Merge Node 정보",
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      "position": [
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      "parameters": {
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        "height": 540,
        "content": "## Merge Node\n\n**Purpose:** Combine data streams\n\n**Modes:**\n- **Append** - Stack items\n- **Combine by Position** - Merge paired items\n- **Combine by Fields** - Join on matching values\n- **Multiplex** - Create combinations\n\n**Use Cases:**\n- Reunite split branches\n- Join data from different sources\n- Create data combinations"
      },
      "typeVersion": 1
    },
    {
      "id": "e68f97f4-e769-4e19-b005-81afe32e19bd",
      "name": "HTTP 요청 - 사용자 조회",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        -16,
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      ],
      "parameters": {
        "url": "https://jsonplaceholder.typicode.com/users",
        "options": {}
      },
      "typeVersion": 4.2
    },
    {
      "id": "aec22fa9-c3b0-493f-9e7d-18396bbc89e7",
      "name": "HTTP 요청 정보",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
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      ],
      "parameters": {
        "color": 6,
        "width": 360,
        "height": 656,
        "content": "## HTTP Request Node\n\n**Purpose:** Call external APIs\n\n**Methods:**\n- GET - Retrieve data\n- POST - Create data\n- PUT/PATCH - Update data\n- DELETE - Remove data\n\n**Authentication:**\n- None, Basic Auth, OAuth2\n- API Key, Bearer Token\n\n**Example:** Fetching from JSONPlaceholder API\n\n💡 **Tip:** Test APIs with free endpoints first!"
      },
      "typeVersion": 1
    },
    {
      "id": "2a386f39-b829-4fa6-9feb-a3514cdce8e0",
      "name": "사용자 배열 분할",
      "type": "n8n-nodes-base.splitOut",
      "position": [
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      ],
      "parameters": {
        "options": {},
        "fieldToSplitOut": "data"
      },
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    {
      "id": "b7224087-b8e0-4aa3-ac02-420d8cf48e85",
      "name": "Split Out 정보",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
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      ],
      "parameters": {
        "color": 6,
        "width": 308,
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        "content": "## Split Out Node\n\n**Purpose:** Convert arrays to individual items\n\n**Example:**\nBefore: 1 item with array of 10 users\nAfter: 10 separate items\n\n**Why?**\n- Process each item individually\n- Apply conditions per item\n- Send separate API calls\n\n**Pattern:**\n```\nHTTP Request → Split Out → Process Each\n```"
      },
      "typeVersion": 1
    },
    {
      "id": "ae144427-e63f-47d6-9e3a-a01fff3eba3f",
      "name": "사용자 필드 추출",
      "type": "n8n-nodes-base.set",
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      ],
      "parameters": {
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        "assignments": {
          "assignments": [
            {
              "id": "assignment-001",
              "name": "user_name",
              "type": "string",
              "value": "={{ $json.name }}"
            },
            {
              "id": "assignment-002",
              "name": "user_email",
              "type": "string",
              "value": "={{ $json.email }}"
            },
            {
              "id": "assignment-003",
              "name": "company",
              "type": "string",
              "value": "={{ $json.company.name }}"
            }
          ]
        }
      },
      "typeVersion": 3.3
    },
    {
      "id": "9a02665d-32f7-41d3-8961-584d39a24fde",
      "name": "OpenAI API - 재미있는 사실 생성",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        864,
        944
      ],
      "parameters": {
        "url": "https://api.openai.com/v1/chat/completions",
        "options": {},
        "sendBody": true,
        "sendHeaders": true,
        "authentication": "predefinedCredentialType",
        "bodyParameters": {
          "parameters": [
            {
              "name": "model",
              "value": "gpt-4o-mini"
            },
            {
              "name": "messages",
              "value": "=[{\"role\": \"user\", \"content\": \"Generate a fun fact about {{ $json.user_name }}'s company: {{ $json.company }}\"}]"
            },
            {
              "name": "temperature",
              "value": "0.7"
            },
            {
              "name": "max_tokens",
              "value": "100"
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          ]
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        "headerParameters": {
          "parameters": [
            {
              "name": "Content-Type",
              "value": "application/json"
            }
          ]
        },
        "nodeCredentialType": "openAiApi"
      },
      "typeVersion": 4.2
    },
    {
      "id": "f06c7f4c-8577-472d-bdd2-ffea5d6f4abf",
      "name": "OpenAI 정보",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
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      ],
      "parameters": {
        "color": 6,
        "width": 360,
        "height": 652,
        "content": "## OpenAI Integration\n\n**Purpose:** AI-powered processing\n\n**Setup:**\n1. Add OpenAI credentials\n2. Use HTTP Request node\n3. Configure model & parameters\n\n**Models:**\n- gpt-4o - Most capable\n- gpt-4o-mini - Fast & cost-effective\n- gpt-3.5-turbo - Legacy\n\n**Parameters:**\n- temperature: 0-1 (creativity)\n- max_tokens: Response length"
      },
      "typeVersion": 1
    },
    {
      "id": "27523b11-3a92-4b5f-b457-811ee30e188f",
      "name": "Webhook - 데이터 수신",
      "type": "n8n-nodes-base.webhook",
      "position": [
        1344,
        944
      ],
      "webhookId": "88d6f248-451b-477a-b754-1b9ce326e67c",
      "parameters": {
        "path": "beginner-webhook",
        "options": {},
        "httpMethod": "POST",
        "responseMode": "responseNode"
      },
      "typeVersion": 2
    },
    {
      "id": "40cee779-e780-4766-a057-3457c27dc1ea",
      "name": "Webhooks 정보",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        1264,
        480
      ],
      "parameters": {
        "color": 7,
        "width": 492,
        "height": 660,
        "content": "## Webhook Node\n\n**Purpose:** HTTP endpoint for external systems\n\n**URL Pattern:**\n`https://your-instance/webhook/path-name`\n\n**Use Cases:**\n- Receive form submissions\n- Handle API callbacks\n- Integrate with third-party services\n\n**Test It:**\n```bash\ncurl -X POST \\\n  https://your-n8n/webhook/beginner-webhook \\\n  -H 'Content-Type: application/json' \\\n  -d '{\"name\":\"Test\",\"value\":123}'\n```"
      },
      "typeVersion": 1
    },
    {
      "id": "5d91498e-32e9-4f9e-89aa-3d4a079f1109",
      "name": "Webhook 응답 전송",
      "type": "n8n-nodes-base.respondToWebhook",
      "position": [
        1552,
        944
      ],
      "parameters": {
        "options": {},
        "respondWith": "json",
        "responseBody": "={{ { \"status\": \"success\", \"received\": $json.body, \"processed_at\": $now.toISO() } }}"
      },
      "typeVersion": 1.1
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    {
      "id": "2bf3244b-8dfd-4cb8-8daa-47e6617d91f0",
      "name": "채팅 트리거 - AI 어시스턴트",
      "type": "@n8n/n8n-nodes-langchain.chatTrigger",
      "position": [
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      ],
      "webhookId": "beginner-chat-assistant",
      "parameters": {
        "public": true,
        "options": {
          "title": "n8n Beginner's Assistant",
          "subtitle": "Your AI helper for learning n8n",
          "responseMode": "lastNode"
        },
        "initialMessages": "Hello! I'm an n8n AI assistant. Ask me anything about n8n workflows!\n\nTry asking:\n- How do I use the IF node?\n- What's the Code node for?\n- How do I call external APIs?"
      },
      "typeVersion": 1.1
    },
    {
      "id": "ac85dfaf-f606-44b5-b2eb-65f3988f1874",
      "name": "채팅 + AI 정보",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
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      ],
      "parameters": {
        "color": 3,
        "width": 380,
        "height": 576,
        "content": "## Chat Trigger + AI Agent\n\n**Purpose:** Create AI chatbots\n\n**Components:**\n1. **Chat Trigger** - Receives messages\n2. **AI Agent** - Processes with AI\n3. **Memory** - Remembers context\n4. **Tools** - Actions agent can take\n\n**Perfect for:**\n- Customer support bots\n- Internal assistants\n- Interactive tutorials\n\n**Try it:** Open the chat interface and ask questions!"
      },
      "typeVersion": 1
    },
    {
      "id": "597eee76-e669-439b-a063-d1efc915d67f",
      "name": "Window Buffer Memory",
      "type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
      "position": [
        192,
        1536
      ],
      "parameters": {
        "contextWindowLength": 10
      },
      "typeVersion": 1.2
    },
    {
      "id": "29e89cad-0ecb-4bd4-9c70-1b11a78a8dad",
      "name": "OpenAI 채팅 모델",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
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      ],
      "parameters": {
        "options": {
          "maxTokens": 500,
          "temperature": 0.7
        }
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    },
    {
      "id": "c835131a-07ec-4e77-82bc-aaf9644d17b7",
      "name": "도구: 현재 시간",
      "type": "@n8n/n8n-nodes-langchain.toolCode",
      "position": [
        448,
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      ],
      "parameters": {
        "name": "get_current_time",
        "description": "Returns the current date and time. Use this when users ask about the current time, date, day of week, etc."
      },
      "typeVersion": 1
    },
    {
      "id": "68818e55-db72-4660-9810-709877f2f90b",
      "name": "도구: 계산기",
      "type": "@n8n/n8n-nodes-langchain.toolCode",
      "position": [
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      ],
      "parameters": {
        "name": "calculate",
        "jsCode": "// Parse input string and calculate\nconst input = $input;\nconst expression = typeof input === 'string' ? input : JSON.stringify(input);\n\ntry {\n  // Simple eval for basic math (in production, use a proper math parser)\n  const result = eval(expression.replace(/[^0-9+\\-*/().\\s]/g, ''));\n  return JSON.stringify({ result: result, expression: expression });\n} catch (error) {\n  return JSON.stringify({ error: 'Invalid mathematical expression', input: expression });\n}",
        "description": "Performs mathematical calculations. Input should be a mathematical expression as a string, like '5 + 3' or '10 * 2'."
      },
      "typeVersion": 1
    },
    {
      "id": "9bfbc587-b48c-445d-afa4-32ed86183ce5",
      "name": "AI 에이전트 - n8n 어시스턴트",
      "type": "@n8n/n8n-nodes-langchain.agent",
      "position": [
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      ],
      "parameters": {
        "options": {
          "systemMessage": "=You are a helpful n8n workflow assistant for beginners.\n\nYour role:\n- Explain n8n concepts in simple terms\n- Provide examples and best practices\n- Help users understand nodes and their connections\n- Be encouraging and patient\n\nKey Topics:\n- Triggers (Manual, Webhook, Schedule, Chat)\n- Data Processing (Set, Code, Edit Fields)\n- Logic (IF, Switch, Merge)\n- Integrations (HTTP Request, APIs)\n- AI Features (Chat Trigger, AI Agent, Tools)\n\nAlways:\n- Use clear, beginner-friendly language\n- Provide practical examples\n- Suggest next learning steps"
        },
        "hasOutputParser": true
      },
      "typeVersion": 1.7
    },
    {
      "id": "3c1d13db-6558-4296-9928-cebe9163de4c",
      "name": "AI 도구 정보",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        400,
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      ],
      "parameters": {
        "color": 3,
        "width": 360,
        "height": 588,
        "content": "## AI Agent Tools\n\n**Purpose:** Give AI capabilities\n\n**Tool Types:**\n- **Code Tools** - Custom JavaScript\n- **Workflow Tools** - Call other workflows\n- **HTTP Tools** - API calls\n- **Vector Store** - Knowledge retrieval\n- **Calculator** - Math operations\n\n**How it works:**\n1. User asks question\n2. AI decides which tool to use\n3. Tool executes and returns result\n4. AI formats response"
      },
      "typeVersion": 1
    },
    {
      "id": "098527ad-4c10-4865-8fd4-922bf0e8a3ef",
      "name": "스케줄 - 매주 월요일 오전 9시",
      "type": "n8n-nodes-base.scheduleTrigger",
      "position": [
        -400,
        976
      ],
      "parameters": {
        "rule": {
          "interval": [
            {
              "field": "cronExpression",
              "expression": "0 9 * * 1"
            }
          ]
        }
      },
      "typeVersion": 1.2
    },
    {
      "id": "051f647b-7a26-495a-b268-3c32f4b97185",
      "name": "스케줄 정보",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
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      ],
      "parameters": {
        "color": 7,
        "width": 360,
        "height": 660,
        "content": "## Schedule Trigger\n\n**Purpose:** Run workflows on schedule\n\n**Options:**\n- **Seconds/Minutes** - Short intervals\n- **Hours** - Hourly tasks\n- **Days** - Daily jobs\n- **Weeks** - Weekly reports\n- **Cron** - Custom schedules\n\n**Example Cron:**\n- `0 9 * * 1` - Monday 9 AM\n- `0 */6 * * *` - Every 6 hours\n- `0 0 1 * *` - First day of month\n\n**Use Cases:**\n- Daily reports\n- Data synchronization\n- Cleanup tasks"
      },
      "typeVersion": 1
    },
    {
      "id": "1d7cb17d-2ef8-4500-8199-e48e3505b831",
      "name": "최종 요약",
      "type": "n8n-nodes-base.set",
      "position": [
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      "parameters": {
        "options": {},
        "assignments": {
          "assignments": [
            {
              "id": "final-summary",
              "name": "workflow_summary",
              "type": "string",
              "value": "=Workflow executed successfully!\n\nProcessed items: {{ $items().length }}\nTimestamp: {{ $now.toISO() }}\n\nThis beginner workflow demonstrated:\n- Data creation and manipulation\n- Conditional logic\n- API integrations\n- AI capabilities\n\nNext: Explore n8n documentation and build your own workflows!"
            }
          ]
        }
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      "typeVersion": 3.3
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