MilvusとCohereを使ったRAG AIエージェント
中級
これはSupport, AI, IT Ops分野の自動化ワークフローで、14個のノードを含みます。主にGoogleDrive, Agent, ExtractFromFile, GoogleDriveTrigger, ChatTriggerなどのノードを使用、AI技術を活用したスマート自動化を実現。 Googleドライブ向けにMilvus、Cohere、OpenAIを使用したRAGドキュメントQ&Aシステム
前提条件
- •Google Drive API認証情報
- •OpenAI API Key
使用ノード (14)
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": "2Eba0OHGtOmoTWOU",
"meta": {
"instanceId": "9219ebc7795bea866f70aa3d977d54417fdf06c41944be95e20cfb60f992db19",
"templateCredsSetupCompleted": true
},
"name": "RAG AI Agent with Milvus and Cohere",
"tags": [
{
"id": "yj7cF3GCsZiargFT",
"name": "rag",
"createdAt": "2025-05-03T17:14:30.099Z",
"updatedAt": "2025-05-03T17:14:30.099Z"
}
],
"nodes": [
{
"id": "361065cc-edbf-47da-8da7-c59b564db6f3",
"name": "デフォルトデータローダー",
"type": "@n8n/n8n-nodes-langchain.documentDefaultDataLoader",
"position": [
0,
320
],
"parameters": {
"options": {}
},
"typeVersion": 1
},
{
"id": "a01b9512-ced1-4e28-a2aa-88077ab79d9a",
"name": "Embeddings Cohere",
"type": "@n8n/n8n-nodes-langchain.embeddingsCohere",
"position": [
-140,
320
],
"parameters": {
"modelName": "embed-multilingual-v3.0"
},
"credentials": {
"cohereApi": {
"id": "8gcYMleu1b8Hm03D",
"name": "CohereApi account"
}
},
"typeVersion": 1
},
{
"id": "1da6ea4b-de88-44d3-a215-78c55b5592a2",
"name": "チャットメッセージ受信時",
"type": "@n8n/n8n-nodes-langchain.chatTrigger",
"position": [
-800,
520
],
"webhookId": "a4257301-3fb9-4b9d-a965-1fa66f314696",
"parameters": {
"options": {}
},
"typeVersion": 1.1
},
{
"id": "23004477-3f6d-4909-a626-0eba0557a5bd",
"name": "新規ファイル監視",
"type": "n8n-nodes-base.googleDriveTrigger",
"position": [
-800,
100
],
"parameters": {
"event": "fileCreated",
"options": {},
"pollTimes": {
"item": [
{
"mode": "everyMinute"
}
]
},
"triggerOn": "specificFolder",
"folderToWatch": {
"__rl": true,
"mode": "list",
"value": "15gjDQZiHZuBeVscnK8Ic_kIWt3mOaVfs",
"cachedResultUrl": "https://drive.google.com/drive/folders/15gjDQZiHZuBeVscnK8Ic_kIWt3mOaVfs",
"cachedResultName": "RAG template"
}
},
"credentials": {
"googleDriveOAuth2Api": {
"id": "r1DVmNxwkIL8JO17",
"name": "Google Drive account"
}
},
"typeVersion": 1
},
{
"id": "001fbdbe-dfcb-4552-bf09-de416b253389",
"name": "新規ダウンロード",
"type": "n8n-nodes-base.googleDrive",
"position": [
-580,
100
],
"parameters": {
"fileId": {
"__rl": true,
"mode": "id",
"value": "={{ $json.id }}"
},
"options": {},
"operation": "download"
},
"credentials": {
"googleDriveOAuth2Api": {
"id": "r1DVmNxwkIL8JO17",
"name": "Google Drive account"
}
},
"typeVersion": 3
},
{
"id": "c1116cba-beb9-4d28-843d-c5c21c0643de",
"name": "Milvusへの挿入",
"type": "@n8n/n8n-nodes-langchain.vectorStoreMilvus",
"position": [
-124,
100
],
"parameters": {
"mode": "insert",
"options": {
"clearCollection": false
},
"milvusCollection": {
"__rl": true,
"mode": "list",
"value": "collectionName",
"cachedResultName": "collectionName"
}
},
"credentials": {
"milvusApi": {
"id": "Gpsxqr2l9Qxu48h0",
"name": "Milvus account"
}
},
"typeVersion": 1.1
},
{
"id": "2dbc7139-46f6-41d8-8c13-9fafad5aec55",
"name": "RAGエージェント",
"type": "@n8n/n8n-nodes-langchain.agent",
"position": [
-540,
520
],
"parameters": {
"options": {}
},
"typeVersion": 1.8
},
{
"id": "a103506e-9019-41f2-9b0d-9b831434c9e9",
"name": "Milvusからの検索",
"type": "@n8n/n8n-nodes-langchain.vectorStoreMilvus",
"position": [
-340,
740
],
"parameters": {
"mode": "retrieve-as-tool",
"topK": 10,
"toolName": "vector_store",
"toolDescription": "You are an AI agent that responds based on information received from a vector database.",
"milvusCollection": {
"__rl": true,
"mode": "list",
"value": "collectionName",
"cachedResultName": "collectionName"
}
},
"credentials": {
"milvusApi": {
"id": "Gpsxqr2l9Qxu48h0",
"name": "Milvus account"
}
},
"typeVersion": 1.1
},
{
"id": "74ccdff1-b976-4e1c-a2c4-237ffff19e34",
"name": "OpenAI 4o",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"position": [
-580,
740
],
"parameters": {
"model": {
"__rl": true,
"mode": "list",
"value": "gpt-4o",
"cachedResultName": "gpt-4o"
},
"options": {}
},
"credentials": {
"openAiApi": {
"id": "vupAk5StuhOafQcb",
"name": "OpenAi account"
}
},
"typeVersion": 1.2
},
{
"id": "36e35eaf-f723-4eeb-9658-143d5bc390a0",
"name": "メモリ",
"type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
"position": [
-460,
740
],
"parameters": {},
"typeVersion": 1.3
},
{
"id": "ec7b6b92-065c-455c-a3f0-17586d9e48d7",
"name": "Cohere埋め込み",
"type": "@n8n/n8n-nodes-langchain.embeddingsCohere",
"position": [
-220,
900
],
"parameters": {
"modelName": "embed-multilingual-v3.0"
},
"credentials": {
"cohereApi": {
"id": "8gcYMleu1b8Hm03D",
"name": "CohereApi account"
}
},
"typeVersion": 1
},
{
"id": "3c3a8900-0b98-4479-8602-16b21e011ba1",
"name": "チャンク設定",
"type": "@n8n/n8n-nodes-langchain.textSplitterRecursiveCharacterTextSplitter",
"position": [
80,
480
],
"parameters": {
"options": {},
"chunkSize": 700,
"chunkOverlap": 60
},
"typeVersion": 1
},
{
"id": "3a43bf1a-7e22-4b5e-bbb1-6bb2c1798c07",
"name": "ファイルからの抽出",
"type": "n8n-nodes-base.extractFromFile",
"position": [
-360,
100
],
"parameters": {
"options": {},
"operation": "pdf"
},
"typeVersion": 1
},
{
"id": "e0c9d4d7-5e3e-4e47-bb1f-dbdca360b20a",
"name": "付箋ノート",
"type": "n8n-nodes-base.stickyNote",
"position": [
-1440,
120
],
"parameters": {
"color": 2,
"width": 540,
"height": 600,
"content": "## Why Milvus\nBased on comparisons and user feedback, **Milvus is often considered a more performant and scalable vector database solution compared to Supabase**, particularly for demanding use cases involving large datasets, high-volume vector search operations, and multilingual support.\n\n\n### Requirements\n- Create an account on [Zilliz](https://zilliz.com/) to generate the Milvus cluster. \n- There is no need to create docker containers or your own instance, Zilliz provides the cloud infraestructure to build it easily\n- Get your credentials ready from Drive, Milvus (Zilliz), and [Cohere](https://cohere.com)\n\n### Usage\nEvery time a new pdf is added into the Drive folder, it will be inserted into the Milvus Vector Store, allowing for the interaction with the RAG agent in seconds.\n\n## Calculate your company's RAG costs\n\nWant to run Milvus on your own server on n8n? Zilliz provides a great [cost calculator](https://zilliz.com/rag-cost-calculator/)\n\n### Get in touch with us\nWant to implement a RAG AI agent for your company? [Shoot us a message](https://1node.ai)\n"
},
"typeVersion": 1
}
],
"active": true,
"pinData": {},
"settings": {
"executionOrder": "v1"
},
"versionId": "8b5fc2b8-50f7-425c-8fc8-94ba4f76ecf3",
"connections": {
"36e35eaf-f723-4eeb-9658-143d5bc390a0": {
"ai_memory": [
[
{
"node": "2dbc7139-46f6-41d8-8c13-9fafad5aec55",
"type": "ai_memory",
"index": 0
}
]
]
},
"74ccdff1-b976-4e1c-a2c4-237ffff19e34": {
"ai_languageModel": [
[
{
"node": "2dbc7139-46f6-41d8-8c13-9fafad5aec55",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"3c3a8900-0b98-4479-8602-16b21e011ba1": {
"ai_textSplitter": [
[
{
"node": "361065cc-edbf-47da-8da7-c59b564db6f3",
"type": "ai_textSplitter",
"index": 0
}
]
]
},
"001fbdbe-dfcb-4552-bf09-de416b253389": {
"main": [
[
{
"node": "3a43bf1a-7e22-4b5e-bbb1-6bb2c1798c07",
"type": "main",
"index": 0
}
]
]
},
"23004477-3f6d-4909-a626-0eba0557a5bd": {
"main": [
[
{
"node": "001fbdbe-dfcb-4552-bf09-de416b253389",
"type": "main",
"index": 0
}
]
]
},
"ec7b6b92-065c-455c-a3f0-17586d9e48d7": {
"ai_embedding": [
[
{
"node": "a103506e-9019-41f2-9b0d-9b831434c9e9",
"type": "ai_embedding",
"index": 0
}
]
]
},
"a01b9512-ced1-4e28-a2aa-88077ab79d9a": {
"ai_embedding": [
[
{
"node": "c1116cba-beb9-4d28-843d-c5c21c0643de",
"type": "ai_embedding",
"index": 0
}
]
]
},
"3a43bf1a-7e22-4b5e-bbb1-6bb2c1798c07": {
"main": [
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{
"node": "c1116cba-beb9-4d28-843d-c5c21c0643de",
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]
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},
"361065cc-edbf-47da-8da7-c59b564db6f3": {
"ai_document": [
[
{
"node": "c1116cba-beb9-4d28-843d-c5c21c0643de",
"type": "ai_document",
"index": 0
}
]
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},
"a103506e-9019-41f2-9b0d-9b831434c9e9": {
"ai_tool": [
[
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},
"1da6ea4b-de88-44d3-a215-78c55b5592a2": {
"main": [
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"type": "main",
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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?
中級 - サポート, 人工知能, IT運用
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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ワークフロー情報
難易度
中級
ノード数14
カテゴリー3
ノードタイプ12
作成者
Aitor | 1node.ai
@aitoralonsoHi, I’m Aitor, cofounder of 1node.ai. We help businesses integrate full-scale AI solutions that save time, cut costs, and increase revenue. Guaranteed. Need help building smarter workflows? Visit 1node.ai and let's connect.
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