Google Drive MCP サーバーのカスタム構築
上級
これはBuilding Blocks, AI分野の自動化ワークフローで、17個のノードを含みます。主にSet, Switch, GoogleDrive, ExtractFromFile, GoogleDriveTool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。 カスタム Google Drive MCP サーバーの構築
前提条件
- •Google Drive API認証情報
- •OpenAI API Key
使用ノード (17)
カテゴリー
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
{
"meta": {
"instanceId": "408f9fb9940c3cb18ffdef0e0150fe342d6e655c3a9fac21f0f644e8bedabcd9",
"templateCredsSetupCompleted": true
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"nodes": [
{
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"type": "n8n-nodes-base.stickyNote",
"position": [
-32,
-20
],
"parameters": {
"color": 7,
"width": 680,
"height": 660,
"content": "## 1. Set up an MCP Server Trigger\n[Read more about the MCP Server Trigger](https://docs.n8n.io/integrations/builtin/core-nodes/n8n-nodes-langchain.mcptrigger)"
},
"typeVersion": 1
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{
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"parameters": {
"color": 5,
"width": 380,
"height": 100,
"content": "### Always Authenticate Your Server!\nBefore going to production, it's always advised to enable authentication on your MCP server trigger."
},
"typeVersion": 1
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{
"id": "79586d35-0582-4da8-91da-5bc8451c2089",
"name": "別ワークフローから実行時",
"type": "n8n-nodes-base.executeWorkflowTrigger",
"position": [
800,
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"parameters": {
"workflowInputs": {
"values": [
{
"name": "operation"
},
{
"name": "folderId"
},
{
"name": "fileId"
}
]
}
},
"typeVersion": 1.1
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{
"id": "02aee033-58e8-4f33-a18d-b872840e81d8",
"name": "Google Drive MCP Server",
"type": "@n8n/n8n-nodes-langchain.mcpTrigger",
"position": [
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"webhookId": "a289c719-fb71-4b08-97c6-79d12645dc7e",
"parameters": {
"path": "a289c719-fb71-4b08-97c6-79d12645dc7e"
},
"typeVersion": 1
},
{
"id": "e0e50653-d98a-4ad4-a2ed-e1b73332c380",
"name": "付箋1",
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"position": [
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"parameters": {
"color": 7,
"width": 1340,
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"content": "## 2. Handle Multiple Binary Formats via Conversion and AI\n[Read more about the PostgreSQL Node](https://docs.n8n.io/integrations/builtin/app-nodes/n8n-nodes-base.postgres/)\n\nMCP clients (or rather, the AI agents) still expect and require text responses from our MCP server.\nN8N can provide the right conversion tools to parse most text formats such as PDF, CSV and XML.\nFor images, audio and video, consider using multimodal LLMs to describe or transcribe the file instead."
},
"typeVersion": 1
},
{
"id": "6be1ff49-5edc-42d2-87de-09d207ee7733",
"name": "ファイルをダウンロード1",
"type": "n8n-nodes-base.googleDrive",
"position": [
1160,
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],
"parameters": {
"fileId": {
"__rl": true,
"mode": "id",
"value": "={{ $json.fileId }}"
},
"options": {
"googleFileConversion": {
"conversion": {
"docsToFormat": "text/plain",
"slidesToFormat": "application/pdf"
}
}
},
"operation": "download"
},
"credentials": {
"googleDriveOAuth2Api": {
"id": "yOwz41gMQclOadgu",
"name": "Google Drive account"
}
},
"typeVersion": 3
},
{
"id": "91b0a549-0494-48a1-bdf3-6c2b91409d01",
"name": "FileType",
"type": "n8n-nodes-base.switch",
"position": [
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],
"parameters": {
"rules": {
"values": [
{
"outputKey": "pdf",
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "7b6958ce-d553-4379-a5d6-743f39b342d0",
"operator": {
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $binary.data.mimeType }}",
"rightValue": "application/pdf"
}
]
},
"renameOutput": true
},
{
"outputKey": "csv",
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
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"operator": {
"name": "filter.operator.equals",
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $binary.data.mimeType }}",
"rightValue": "text/csv"
}
]
},
"renameOutput": true
},
{
"outputKey": "image",
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "589540e1-1439-41e3-ba89-b27f5e936190",
"operator": {
"type": "boolean",
"operation": "true",
"singleValue": true
},
"leftValue": "={{\n[\n 'image/jpeg',\n 'image/jpg',\n 'image/png',\n 'image/gif'\n].some(mimeType => $binary.data.mimeType === mimeType)\n}}",
"rightValue": ""
}
]
},
"renameOutput": true
},
{
"outputKey": "audio",
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
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"operator": {
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"operation": "contains"
},
"leftValue": "={{ $binary.data.mimeType }}",
"rightValue": "audio"
}
]
},
"renameOutput": true
},
{
"outputKey": "video",
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
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"operator": {
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"operation": "contains"
},
"leftValue": "={{ $binary.data.mimeType }}",
"rightValue": "video"
}
]
},
"renameOutput": true
}
]
},
"options": {}
},
"typeVersion": 3.2
},
{
"id": "d88ed202-1121-41db-859d-b31d53d46292",
"name": "Operation",
"type": "n8n-nodes-base.switch",
"position": [
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],
"parameters": {
"rules": {
"values": [
{
"outputKey": "ReadFile",
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
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"operator": {
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.operation }}",
"rightValue": "readFile"
}
]
},
"renameOutput": true
}
]
},
"options": {}
},
"typeVersion": 3.2
},
{
"id": "7e8791e6-24c2-441a-8efb-7f4375f2519b",
"name": "PDFから抽出",
"type": "n8n-nodes-base.extractFromFile",
"position": [
1620,
80
],
"parameters": {
"options": {},
"operation": "pdf"
},
"typeVersion": 1
},
{
"id": "2b33623c-cea4-4a83-80ef-f852b9a3d126",
"name": "CSVから抽出",
"type": "n8n-nodes-base.extractFromFile",
"position": [
1620,
260
],
"parameters": {
"options": {
"encoding": "utf-8",
"headerRow": false,
"relaxQuotes": true,
"includeEmptyCells": true
}
},
"typeVersion": 1
},
{
"id": "6ca2542d-225e-4a65-b5ce-3edafb11379c",
"name": "PDFレスポンスを取得",
"type": "n8n-nodes-base.set",
"position": [
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],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "a481cde3-b8ec-4d97-aa13-4668bd66c24d",
"name": "response",
"type": "string",
"value": "={{ $json.text }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "3d1c4aa6-cac1-4957-ab7e-3134368e4b53",
"name": "CSVレスポンスを取得",
"type": "n8n-nodes-base.set",
"position": [
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],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "a481cde3-b8ec-4d97-aa13-4668bd66c24d",
"name": "response",
"type": "string",
"value": "={{\n$input.all()\n .map(item => item.json.row.map(cell => `\"${cell}\"`).join(','))\n .join('\\n')\n}}"
}
]
}
},
"executeOnce": true,
"typeVersion": 3.4
},
{
"id": "141444f9-e937-41f9-ab97-09624646ddba",
"name": "GDriveからファイルを読み取り",
"type": "@n8n/n8n-nodes-langchain.toolWorkflow",
"position": [
400,
380
],
"parameters": {
"name": "ReadFile",
"workflowId": {
"__rl": true,
"mode": "id",
"value": "={{ $workflow.id }}"
},
"description": "Call this tool to download and read the contents of a file within google drive.",
"workflowInputs": {
"value": {
"fileId": "={{ /*n8n-auto-generated-fromAI-override*/ $fromAI('fileId', ``, 'string') }}",
"folderId": "={{ /*n8n-auto-generated-fromAI-override*/ $fromAI('folderId', ``, 'string') }}",
"operation": "readFile"
},
"schema": [
{
"id": "operation",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "operation",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "folderId",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "folderId",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "fileId",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "fileId",
"defaultMatch": false,
"canBeUsedToMatch": true
}
],
"mappingMode": "defineBelow",
"matchingColumns": [],
"attemptToConvertTypes": false,
"convertFieldsToString": false
}
},
"typeVersion": 2.1
},
{
"id": "b5851527-0b57-447b-ac8c-10408a684862",
"name": "GDriveからファイルを検索",
"type": "n8n-nodes-base.googleDriveTool",
"position": [
240,
380
],
"parameters": {
"limit": 10,
"filter": {
"driveId": {
"mode": "list",
"value": "My Drive"
},
"whatToSearch": "files"
},
"options": {},
"resource": "fileFolder",
"queryString": "={{ /*n8n-auto-generated-fromAI-override*/ $fromAI('Search_Query', ``, 'string') }}"
},
"credentials": {
"googleDriveOAuth2Api": {
"id": "yOwz41gMQclOadgu",
"name": "Google Drive account"
}
},
"typeVersion": 3
},
{
"id": "98197c91-c7e9-4fbb-a2b1-c16c873fa0a1",
"name": "画像を解析",
"type": "@n8n/n8n-nodes-langchain.openAi",
"position": [
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],
"parameters": {
"modelId": {
"__rl": true,
"mode": "list",
"value": "gpt-4o-mini",
"cachedResultName": "GPT-4O-MINI"
},
"options": {},
"resource": "image",
"inputType": "base64",
"operation": "analyze"
},
"credentials": {
"openAiApi": {
"id": "8gccIjcuf3gvaoEr",
"name": "OpenAi account"
}
},
"typeVersion": 1.8
},
{
"id": "b44a787a-c670-47e1-b87e-d880425ce610",
"name": "音声を文字起こし",
"type": "@n8n/n8n-nodes-langchain.openAi",
"position": [
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],
"parameters": {
"options": {},
"resource": "audio",
"operation": "transcribe"
},
"credentials": {
"openAiApi": {
"id": "8gccIjcuf3gvaoEr",
"name": "OpenAi account"
}
},
"typeVersion": 1.8
},
{
"id": "1e1a358d-769e-48c9-bf27-6a3cfaaacb14",
"name": "付箋2",
"type": "n8n-nodes-base.stickyNote",
"position": [
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],
"parameters": {
"width": 440,
"height": 1060,
"content": "## Try It Out!\n### This n8n demonstrates how to build a simple Google Drive MCP server to search and get contents of files from Google Drive.\n\nThis MCP example is based off an official MCP reference implementation which can be found here -https://github.com/modelcontextprotocol/servers/tree/main/src/gdrive\n\n### How it works\n* A MCP server trigger is used and connected to 1x Google Drive tool and 1x Custom Workflow tool.\n* The Google Drive tool is set to perform a search on files within our Google Drive folder.\n* The Custom Workflow tool downloads target files found in our drive and converts the binaries to their text representation. Eg. PDFs have only their text contents extracted and returned to the MCP client.\n\n### How to use\n* This Google Drive MCP server allows any compatible MCP client to manage a person or shared Google Drive. Simple select a drive or for better control, specify a folder within the drive to scope the operations to.\n* Connect your MCP client by following the n8n guidelines here - https://docs.n8n.io/integrations/builtin/core-nodes/n8n-nodes-langchain.mcptrigger/#integrating-with-claude-desktop\n* Try the following queries in your MCP client:\n * \"Please help me search for last month's expense reports.\"\n * \"What does the company policy document say about cancellations and refunds?\"\n\n### Requirements\n* Google Drive for documents.\n* OpenAI for image and audio understanding.\n* MCP Client or Agent for usage such as Claude Desktop - https://claude.ai/download\n\n### Customising this workflow\n* Add additional capabilities such as renaming, moving and/or deleting files.\n* Remember to set the MCP server to require credentials before going to production and sharing this MCP server with others!"
},
"typeVersion": 1
}
],
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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 - ビルディングブロック, 人工知能
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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内部Wiki
ワークフロー情報
難易度
上級
ノード数17
カテゴリー2
ノードタイプ10
作成者
Jimleuk
@jimleukFreelance consultant based in the UK specialising in AI-powered automations. I work with select clients tackling their most challenging projects. For business enquiries, send me an email at hello@jimle.uk LinkedIn: https://www.linkedin.com/in/jimleuk/ X/Twitter: https://x.com/jimle_uk
外部リンク
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