AI駆動型WhatsAppチャットボット
上級
これはSupport Chatbot, AI RAG分野の自動化ワークフローで、35個のノードを含みます。主にSet, Code, Switch, WhatsApp, GoogleDocsなどのノードを使用。 ドキュメント用のRAG駆動 WhatsApp チャットボットを構築：GPT-4o-mini と MongoDB を使用
前提条件
- •ターゲットAPIの認証情報が必要な場合あり
- •OpenAI API Key
- •MongoDB接続文字列
使用ノード (35)
ワークフロープレビュー
ノード接続関係を可視化、ズームとパンをサポート
ワークフローをエクスポート
以下のJSON設定をn8nにインポートして、このワークフローを使用できます
{
"id": "vYWjlJAfDq1CLvwh",
"meta": {
"instanceId": "6c1bc30b5f087d2b3635d5a895d4ebe581394ab9a8f14e320c3671f4d1070a12",
"templateCredsSetupCompleted": true
},
"name": "AI-Powered WhatsApp Chatbot",
"tags": [],
"nodes": [
{
"id": "8b5a6eb6-0b15-489d-b122-3e49ead07d44",
"name": "ナレッジベースエージェント",
"type": "@n8n/n8n-nodes-langchain.agent",
"position": [
3140,
1020
],
"parameters": {
"text": "={{ $json.text }}",
"options": {
"systemMessage": ""
},
"promptType": "define"
},
"typeVersion": 1.9
},
{
"id": "7de6ec3d-0160-4e52-a457-cb8e4695a631",
"name": "OpenAI チャットモデル",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"position": [
3140,
1200
],
"parameters": {
"model": {
"__rl": true,
"mode": "list",
"value": "gpt-4o-mini"
},
"options": {}
},
"credentials": {
"openAiApi": {
"id": "t3h6MkO3IXeZM0oN",
"name": "OpenAi account"
}
},
"typeVersion": 1.2
},
{
"id": "ab9c5096-543a-4b6c-a67f-59e048fb6a49",
"name": "OpenAI 埋め込み",
"type": "@n8n/n8n-nodes-langchain.embeddingsOpenAi",
"position": [
3480,
1360
],
"parameters": {
"options": {}
},
"credentials": {
"openAiApi": {
"id": "t3h6MkO3IXeZM0oN",
"name": "OpenAi account"
}
},
"typeVersion": 1.2
},
{
"id": "3b4a0e5c-17f1-47e7-9501-0fc58fb09eba",
"name": "「ワークフロー実行」クリック時",
"type": "n8n-nodes-base.manualTrigger",
"position": [
800,
60
],
"parameters": {},
"typeVersion": 1
},
{
"id": "cf33740a-db43-4dd8-a4fc-f4304e2dca26",
"name": "シンプルメモリ",
"type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
"position": [
3240,
1200
],
"parameters": {
"sessionKey": "=memory_{{ $('WhatsApp Trigger').item.json.contacts[0].wa_id }}",
"sessionIdType": "customKey"
},
"typeVersion": 1.3
},
{
"id": "aac65924-febe-487f-8aaa-66160e1d68cd",
"name": "MongoDB ベクター検索",
"type": "@n8n/n8n-nodes-langchain.vectorStoreMongoDBAtlas",
"position": [
3360,
1200
],
"parameters": {
"mode": "retrieve-as-tool",
"options": {},
"toolName": "productDocs",
"mongoCollection": {
"__rl": true,
"mode": "list",
"value": "n8n-template",
"cachedResultName": "n8n-template"
},
"toolDescription": "retreive documentation",
"vectorIndexName": "data_index"
},
"typeVersion": 1.1
},
{
"id": "ba9ee299-ba87-4d3b-85ab-342eb1a36333",
"name": "ドキュメントセクションローダー",
"type": "@n8n/n8n-nodes-langchain.documentDefaultDataLoader",
"position": [
1340,
220
],
"parameters": {
"options": {
"metadata": {
"metadataValues": [
{
"name": "doc_id",
"value": "={{ $json.documentId }}"
}
]
}
},
"jsonData": "={{ $json.content }}",
"jsonMode": "expressionData"
},
"typeVersion": 1
},
{
"id": "903ed5a6-ef8d-4e8f-a8ed-69c471696ec7",
"name": "ドキュメントチャンカー",
"type": "@n8n/n8n-nodes-langchain.textSplitterRecursiveCharacterTextSplitter",
"position": [
1340,
360
],
"parameters": {
"options": {
"splitCode": "markdown"
},
"chunkSize": 3000,
"chunkOverlap": 200
},
"typeVersion": 1
},
{
"id": "b7d20587-58c9-4ed3-92af-7866d21929d0",
"name": "MongoDB ベクターストア挿入器",
"type": "@n8n/n8n-nodes-langchain.vectorStoreMongoDBAtlas",
"position": [
1240,
60
],
"parameters": {
"mode": "insert",
"options": {},
"mongoCollection": {
"__rl": true,
"mode": "list",
"value": "n8n-template",
"cachedResultName": "n8n-template"
},
"vectorIndexName": "data_index"
},
"typeVersion": 1.1
},
{
"id": "e3fdc76a-58d0-4313-a2e2-3a05e9e69587",
"name": "OpenAI 埋め込みジェネレーター",
"type": "@n8n/n8n-nodes-langchain.embeddingsOpenAi",
"position": [
1240,
220
],
"parameters": {
"options": {}
},
"typeVersion": 1.2
},
{
"id": "577f8392-10cd-44e0-9cac-17d87b2a76ba",
"name": "Google ドキュメントインポーター",
"type": "n8n-nodes-base.googleDocs",
"position": [
1020,
60
],
"parameters": {
"operation": "get",
"documentURL": "https://docs.google.com/document/d/1gvgp71e9edob8WLqFIYCdzC7kUq3pLO37VKb-a-vVW4/edit?tab=t.0"
},
"typeVersion": 2
},
{
"id": "b1f0160f-6b7d-4b6a-89e0-55f98f2d1279",
"name": "付箋",
"type": "n8n-nodes-base.stickyNote",
"position": [
420,
40
],
"parameters": {
"color": 5,
"content": "Run this workflow manually to import and index Google Docs product documentation into MongoDB with vector embeddings for fast search."
},
"typeVersion": 1
},
{
"id": "a0aee202-897a-4680-9b65-2a2b6cb39d19",
"name": "付箋1",
"type": "n8n-nodes-base.stickyNote",
"position": [
420,
980
],
"parameters": {
"color": 4,
"height": 280,
"content": "This workflow listens for WhatsApp messages (text, audio, image, documents), converts them into embeddings, searches MongoDB, and uses GPT-4o-mini to provide context-aware answers with conversation memory."
},
"typeVersion": 1
},
{
"id": "cc9e1076-fd72-48df-a930-5133bb6895ef",
"name": "付箋2",
"type": "n8n-nodes-base.stickyNote",
"position": [
1640,
40
],
"parameters": {
"height": 540,
"content": "Search Index Example \n\n{\n \"mappings\": {\n \"dynamic\": false,\n \"fields\": {\n \"_id\": {\n \"type\": \"string\"\n },\n \"text\": {\n \"type\": \"string\"\n },\n \"embedding\": {\n \"type\": \"knnVector\",\n \"dimensions\": 1536,\n \"similarity\": \"cosine\"\n },\n \"source\": {\n \"type\": \"string\"\n },\n \"doc_id\": {\n \"type\": \"string\"\n }\n }\n }\n}\n"
},
"typeVersion": 1
},
{
"id": "c8ec72a1-70de-4a91-9569-cd5773f6f77e",
"name": "WhatsApp トリガー",
"type": "n8n-nodes-base.whatsAppTrigger",
"position": [
800,
1020
],
"webhookId": "ab09ca3e-53b2-4079-9ddc-bccb2f69551b",
"parameters": {
"options": {},
"updates": [
"messages"
]
},
"credentials": {
"whatsAppTriggerApi": {
"id": "JZmd3JpbRgS6dKRd",
"name": "WhatsApp OAuth account"
}
},
"typeVersion": 1
},
{
"id": "bf60f6ef-e838-4961-8a21-ad0c6317e523",
"name": "OpenAI",
"type": "@n8n/n8n-nodes-langchain.openAi",
"position": [
1880,
780
],
"parameters": {
"options": {},
"resource": "audio",
"operation": "translate"
},
"credentials": {
"openAiApi": {
"id": "t3h6MkO3IXeZM0oN",
"name": "OpenAi account"
}
},
"typeVersion": 1.8
},
{
"id": "ed3a0719-8dd8-4f29-a15c-9910872682c5",
"name": "OpenAI1",
"type": "@n8n/n8n-nodes-langchain.openAi",
"position": [
1880,
1020
],
"parameters": {
"modelId": {
"__rl": true,
"mode": "list",
"value": "gpt-4o-mini",
"cachedResultName": "GPT-4O-MINI"
},
"options": {
"detail": "auto"
},
"resource": "image",
"inputType": "base64",
"operation": "analyze"
},
"credentials": {
"openAiApi": {
"id": "t3h6MkO3IXeZM0oN",
"name": "OpenAi account"
}
},
"typeVersion": 1.8
},
{
"id": "f8fb7589-56d8-43b2-81cd-09a0b578fb7b",
"name": "PDFから抽出",
"type": "n8n-nodes-base.extractFromFile",
"position": [
2480,
1480
],
"parameters": {
"options": {},
"operation": "pdf"
},
"typeVersion": 1
},
{
"id": "c7684d79-a21a-4914-bd11-8158210ae9bd",
"name": "XLSから抽出",
"type": "n8n-nodes-base.extractFromFile",
"position": [
2380,
1680
],
"parameters": {
"options": {},
"operation": "xls"
},
"typeVersion": 1
},
{
"id": "9fd46ff5-f7ac-4aaa-a4b0-1ef043115838",
"name": "XLSXから抽出",
"type": "n8n-nodes-base.extractFromFile",
"position": [
2380,
1840
],
"parameters": {
"options": {},
"operation": "xlsx",
"binaryPropertyName": "=data"
},
"typeVersion": 1
},
{
"id": "1b574602-e308-4f5d-bf38-480c68e90232",
"name": "JSON マップ",
"type": "n8n-nodes-base.set",
"position": [
2620,
1600
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "72ae0d20-616a-4a65-9b14-53bf53656091",
"name": "data",
"type": "string",
"value": "={{ $json }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "cd49a4c3-019b-4bf0-bf38-21a05421c890",
"name": "ファイル拡張子マップ",
"type": "n8n-nodes-base.code",
"position": [
1840,
1360
],
"parameters": {
"jsCode": "let requests = $(\"Download Document\").all()\n\nrequests.forEach((request) => {\n let mime_type = request.json.mime_type\n\n if (\n mime_type === \"text/calendar\" || \n mime_type === \"application/ics\" || \n mime_type === \"text/x-calendar\"\n ) {\n request.json.mime_type = \"mapped/calendar\"\n }\n\n if (\n mime_type === \"application/xml\" || \n mime_type === \"text/xml\") {\n request.json.mime_type = \"mapped/xml\"\n }\n\n if (!mime_type) {\n request.json.mime_type = $('Gets WhatsApp Document Source URL').first().json.mime_type\n }\n})\n\nreturn requests;"
},
"typeVersion": 2
},
{
"id": "57a371b1-86b7-4191-a8a7-aa1c2a9fca40",
"name": "ドキュメントプロンプトマップ",
"type": "n8n-nodes-base.set",
"position": [
2860,
1420
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "da68bcca-a2a6-4676-8649-6fb1b664e44c",
"name": "text",
"type": "string",
"value": "=Parsed text: {{ $json.text || $json.data || $json }}\n\nCaption text: {{ $('Route Types').item.json.messages[0].document.caption }}\n\nMimeType: {{ $('Gets WhatsApp Document Source URL').item.json.mime_type }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "3cd05ec3-e093-4be1-98c2-b34513770e37",
"name": "画像プロンプトマップ",
"type": "n8n-nodes-base.set",
"position": [
2100,
1020
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "48af2dcc-4ce9-45fc-abfc-54f803930092",
"name": "text",
"type": "string",
"value": "=User image description: {{ $json.content }}\n\nUser image caption: {{ $('Route Types').item.json.messages[0].image.caption }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "693f234d-dbe3-4330-ade1-d7e3d9e5d9dd",
"name": "テキストプロンプトマップ",
"type": "n8n-nodes-base.set",
"position": [
1440,
580
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "38aec976-a32c-4b0e-85f4-c90adc16abc9",
"name": "text",
"type": "string",
"value": "={{ $json.messages[0].text.body }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "577e4532-bd7e-4f7d-a2d2-3abdaf9d2c67",
"name": "WhatsApp ボイスメールソースURL取得",
"type": "n8n-nodes-base.whatsApp",
"position": [
1440,
780
],
"webhookId": "bbe62f3d-8788-49d4-aae6-9e9411446d44",
"parameters": {
"resource": "media",
"operation": "mediaUrlGet",
"mediaGetId": "={{ $json.messages[0].audio.id}}"
},
"credentials": {
"whatsAppApi": {
"id": "LSWzVTg64cAdpkcw",
"name": "WhatsApp account 3"
}
},
"typeVersion": 1
},
{
"id": "acad9ee7-4928-4629-908f-4741a1aadc82",
"name": "WhatsApp 画像ソースURL取得",
"type": "n8n-nodes-base.whatsApp",
"position": [
1440,
1020
],
"webhookId": "c2982df4-1d8d-4669-a724-44ae17d11e6c",
"parameters": {
"resource": "media",
"operation": "mediaUrlGet",
"mediaGetId": "={{ $json.messages[0].image.id }}"
},
"credentials": {
"whatsAppApi": {
"id": "LSWzVTg64cAdpkcw",
"name": "WhatsApp account 3"
}
},
"typeVersion": 1
},
{
"id": "a5fe7973-74e9-4343-b3a4-bfe5ee4b40bb",
"name": "WhatsApp ドキュメントソースURL取得",
"type": "n8n-nodes-base.whatsApp",
"position": [
1440,
1360
],
"webhookId": "c2982df4-1d8d-4669-a724-44ae17d11e6c",
"parameters": {
"resource": "media",
"operation": "mediaUrlGet",
"mediaGetId": "={{ $json.messages[0].document.id }}"
},
"credentials": {
"whatsAppApi": {
"id": "LSWzVTg64cAdpkcw",
"name": "WhatsApp account 3"
}
},
"typeVersion": 1
},
{
"id": "1347ee86-eeb4-4d7d-909a-df956b131ac1",
"name": "ボイスメールダウンロード",
"type": "n8n-nodes-base.httpRequest",
"position": [
1660,
780
],
"parameters": {
"url": "={{ $json.url }}",
"options": {},
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth"
},
"credentials": {
"httpHeaderAuth": {
"id": "HbkIqe4va08FNkZq",
"name": "Header Auth account"
}
},
"typeVersion": 4.2
},
{
"id": "de8d1488-d892-499f-b5f4-f5c6e97b8296",
"name": "画像ダウンロード",
"type": "n8n-nodes-base.httpRequest",
"position": [
1660,
1020
],
"parameters": {
"url": "={{ $json.url }}",
"options": {},
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth"
},
"credentials": {
"httpHeaderAuth": {
"id": "HbkIqe4va08FNkZq",
"name": "Header Auth account"
}
},
"typeVersion": 4.2
},
{
"id": "5cf698c8-ae35-4c8a-804b-4c5ab2424468",
"name": "ドキュメントダウンロード",
"type": "n8n-nodes-base.httpRequest",
"position": [
1660,
1360
],
"parameters": {
"url": "={{ $json.url }}",
"options": {
"response": {
"response": {}
}
},
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth"
},
"credentials": {
"httpHeaderAuth": {
"id": "HbkIqe4va08FNkZq",
"name": "Header Auth account"
}
},
"typeVersion": 4.2
},
{
"id": "b6d7f091-5ec9-44e0-aba5-7c5468cc0790",
"name": "タイプ振り分け",
"type": "n8n-nodes-base.switch",
"position": [
1020,
1000
],
"parameters": {
"rules": {
"values": [
{
"outputKey": "Text",
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "2fc5c912-629b-4cbe-b5e3-7e3f0651c628",
"operator": {
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.messages[0].type }}",
"rightValue": "text"
}
]
},
"renameOutput": true
},
{
"outputKey": "Audio",
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "26a3d85c-0815-48ff-85ce-713129a1107c",
"operator": {
"name": "filter.operator.equals",
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.messages[0].type }}",
"rightValue": "audio"
}
]
},
"renameOutput": true
},
{
"outputKey": "Image",
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "840b95b8-6559-4fb7-b32c-651451d6d0d2",
"operator": {
"name": "filter.operator.equals",
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.messages[0].type }}",
"rightValue": "image"
}
]
},
"renameOutput": true
},
{
"outputKey": "Document",
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "3e7a07f9-b785-450c-8c68-f6b276838503",
"operator": {
"name": "filter.operator.equals",
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.messages[0].type }}",
"rightValue": "document"
}
]
},
"renameOutput": true
}
]
},
"options": {}
},
"typeVersion": 3.2
},
{
"id": "002800e0-712e-4ab8-a1fd-befbe2f0681b",
"name": "ドキュメントタイプ振り分け",
"type": "n8n-nodes-base.switch",
"position": [
2100,
1200
],
"parameters": {
"rules": {
"values": [
{
"outputKey": "CSV",
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "14e23243-cd44-4cb1-99bd-9e6905d511ad",
"operator": {
"name": "filter.operator.equals",
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.mime_type }}",
"rightValue": "text/csv"
}
]
},
"renameOutput": true
},
{
"outputKey": "HTML",
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "6d7616c5-6bdd-47b7-923e-639491d15a4e",
"operator": {
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.mime_type }}",
"rightValue": "text/html"
}
]
},
"renameOutput": true
},
{
"outputKey": "Calendar",
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "a2174e02-378a-41ff-b269-61f4fc3f1de9",
"operator": {
"name": "filter.operator.equals",
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.mime_type }}",
"rightValue": "=mapped/calendar"
}
]
},
"renameOutput": true
},
{
"outputKey": "RTF",
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "f3b406d7-362d-473e-8edd-c3e5f2d9c44c",
"operator": {
"name": "filter.operator.equals",
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.mime_type }}",
"rightValue": "text/rtf"
}
]
},
"renameOutput": true
},
{
"outputKey": "TXT",
"conditions": {
"options": {
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}よくある質問
このワークフローの使い方は？
上記のJSON設定コードをコピーし、n8nインスタンスで新しいワークフローを作成して「JSONからインポート」を選択、設定を貼り付けて認証情報を必要に応じて変更してください。
このワークフローはどんな場面に適していますか？
上級 - サポートチャットボット, AI RAG検索拡張
有料ですか？
このワークフローは完全無料です。ただし、ワークフローで使用するサードパーティサービス（OpenAI APIなど）は別途料金が発生する場合があります。
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ノードタイプ18
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@shahzaib191外部リンク
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