构建自定义文件系统MCP服务器
中级
这是一个自动化工作流，包含 14 个节点。主要使用 Switch, ExecuteCommand, ExecuteCommandTool, McpTrigger, ToolWorkflow 等节点。 构建自定义文件系统MCP服务器
前置要求
- •无特殊前置要求，导入即可使用
使用的节点 (14)
分类
-
工作流预览
可视化展示节点连接关系，支持缩放和平移
导出工作流
复制以下 JSON 配置到 n8n 导入，即可使用此工作流
{
"meta": {
"instanceId": "408f9fb9940c3cb18ffdef0e0150fe342d6e655c3a9fac21f0f644e8bedabcd9"
},
"nodes": [
{
"id": "24be8907-684e-4b57-9642-6f4a45ca7af3",
"name": "便签",
"type": "n8n-nodes-base.stickyNote",
"position": [
-380,
-280
],
"parameters": {
"color": 7,
"width": 680,
"height": 660,
"content": "## 1. 设置 MCP 服务器触发器"
},
"typeVersion": 1
},
{
"id": "d5845d0a-648f-4bc1-b087-bc0d17506ed3",
"name": "便签3",
"type": "n8n-nodes-base.stickyNote",
"position": [
-380,
-400
],
"parameters": {
"color": 5,
"width": 380,
"height": 100,
"content": "### 始终验证您的服务器！"
},
"typeVersion": 1
},
{
"id": "fe9f1c8e-8334-4732-be3a-5ee49036e11e",
"name": "文件系统 MCP 服务器",
"type": "@n8n/n8n-nodes-langchain.mcpTrigger",
"position": [
-180,
-140
],
"webhookId": "0d93cfd5-2fbf-457e-9535-5bfc9a73ba9e",
"parameters": {
"path": "0d93cfd5-2fbf-457e-9535-5bfc9a73ba9e"
},
"typeVersion": 1
},
{
"id": "fb49782f-d8de-480b-a470-e37adb2e3036",
"name": "列出目录",
"type": "n8n-nodes-base.executeCommandTool",
"position": [
-300,
60
],
"parameters": {
"command": "=ls /home/node/{{ $fromAI('path', 'optional, leave blank for project root directory.') }}",
"toolDescription": "List directories under the project root folder. The project root directory is /home/node/"
},
"typeVersion": 1
},
{
"id": "8fa93054-bcf5-4fbc-9825-df16be063eb2",
"name": "创建目录",
"type": "n8n-nodes-base.executeCommandTool",
"position": [
-200,
160
],
"parameters": {
"command": "=mkdir -p /home/node/{{ $fromAI('filename', 'name of directory. Will be scoped under the /home/node/ project root directory. Optionally use path to create within subdirectories') }}",
"toolDescription": "Create directories under the project root folder. The project root folder is /home/node."
},
"typeVersion": 1
},
{
"id": "aafe884d-0e6e-476a-92fe-b2111f624417",
"name": "当被另一个工作流执行时",
"type": "n8n-nodes-base.executeWorkflowTrigger",
"position": [
400,
40
],
"parameters": {
"workflowInputs": {
"values": [
{
"name": "operation"
},
{
"name": "filenames",
"type": "array"
},
{
"name": "contents",
"type": "array"
}
]
}
},
"typeVersion": 1.1
},
{
"id": "d85925b6-d58d-43b5-a6ca-3e43cbc81121",
"name": "操作",
"type": "n8n-nodes-base.switch",
"position": [
580,
40
],
"parameters": {
"rules": {
"values": [
{
"outputKey": "writeOneOrMultipleFiles",
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "c1da2138-e2df-46d4-b1f4-97525c05e778",
"operator": {
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.operation }}",
"rightValue": "writeOneOrMultipleFiles"
}
]
},
"renameOutput": true
},
{
"outputKey": "readOneOrMultipleFiles",
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "cc02a5a2-609c-4dbe-bdb6-45f145947e47",
"operator": {
"name": "filter.operator.equals",
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.operation }}",
"rightValue": "readOneOrMultipleFiles"
}
]
},
"renameOutput": true
}
]
},
"options": {}
},
"typeVersion": 3.2
},
{
"id": "e9ec2928-5e33-4213-a53a-92b7d840d49e",
"name": "读取一个或多个文件",
"type": "n8n-nodes-base.executeCommand",
"position": [
840,
140
],
"parameters": {
"command": "=cat {{ $json.filenames.join(' ') }}"
},
"typeVersion": 1
},
{
"id": "77ba2a48-b4b9-4a23-818d-e028a7762514",
"name": "读取文件",
"type": "@n8n/n8n-nodes-langchain.toolWorkflow",
"position": [
40,
160
],
"parameters": {
"name": "readFil",
"workflowId": {
"__rl": true,
"mode": "id",
"value": "={{ $workflow.id }}"
},
"description": "=调用此工具读取文件内容。需包含文件扩展名",
"workflowInputs": {
"value": {
"contents": "[]",
"filenames": "={{ /*n8n-auto-generated-fromAI-override*/ $fromAI('filenames', `An array of filenames`, 'string') }}",
"operation": "readOneOrMultipleFiles"
},
"schema": [
{
"id": "operation",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "operation",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "filenames",
"type": "array",
"display": true,
"removed": false,
"required": false,
"displayName": "filenames",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "contents",
"type": "array",
"display": true,
"removed": false,
"required": false,
"displayName": "contents",
"defaultMatch": false,
"canBeUsedToMatch": true
}
],
"mappingMode": "defineBelow",
"matchingColumns": [],
"attemptToConvertTypes": false,
"convertFieldsToString": false
}
},
"typeVersion": 2.1
},
{
"id": "2ddf9a9a-cade-41c0-a068-482345452d4b",
"name": "写入文件",
"type": "@n8n/n8n-nodes-langchain.toolWorkflow",
"position": [
140,
60
],
"parameters": {
"name": "write_file",
"workflowId": {
"__rl": true,
"mode": "id",
"value": "={{ $workflow.id }}"
},
"description": "调用此工具将内容写入一个或多个文件。文件名和内容通过各自的数组索引匹配。例如：要写入单个文件，使用 { filenames: [<文件名1>,<文件名2>], contents: [<内容1>,<内容2>] }",
"workflowInputs": {
"value": {
"contents": "={{ /*n8n-auto-generated-fromAI-override*/ $fromAI('contents', `An array of strings for content to be written`, 'string') }}",
"filenames": "={{ /*n8n-auto-generated-fromAI-override*/ $fromAI('filenames', `An array of strings for filenames`, 'string') }}",
"operation": "writeOneOrMultipleFiles"
},
"schema": [
{
"id": "operation",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "operation",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "filenames",
"type": "array",
"display": true,
"removed": false,
"required": false,
"displayName": "filenames",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "contents",
"type": "array",
"display": true,
"removed": false,
"required": false,
"displayName": "contents",
"defaultMatch": false,
"canBeUsedToMatch": true
}
],
"mappingMode": "defineBelow",
"matchingColumns": [],
"attemptToConvertTypes": false,
"convertFieldsToString": false
}
},
"typeVersion": 2.1
},
{
"id": "a5d9e11b-0583-4c67-b30b-be1d4185b891",
"name": "写入一个或多个文件",
"type": "n8n-nodes-base.executeCommand",
"position": [
840,
-60
],
"parameters": {
"command": "={{\n$json.filenames.map((filename,idx) =>\n `echo \"${$json.contents[idx] ?? ''}\" > /home/node/${filename}`\n).join('\\n')\n}}"
},
"typeVersion": 1
},
{
"id": "de2f715c-b6d1-4702-9d39-2527108b5706",
"name": "搜索目录",
"type": "n8n-nodes-base.executeCommandTool",
"position": [
-80,
240
],
"parameters": {
"command": "=find /home/node/ -name \"{{ $fromAI('filename', 'A name search paramter for the linux find tool') }}\"\n",
"toolDescription": "Search the project folder for a file by name. The project root directory is /home/node/"
},
"typeVersion": 1
},
{
"id": "a4918bb1-8882-45c8-a05c-a3e22912cc0f",
"name": "便签1",
"type": "n8n-nodes-base.stickyNote",
"position": [
320,
-280
],
"parameters": {
"color": 7,
"width": 740,
"height": 660,
"content": "## 2. 使用自定义工作流工具处理更复杂的命令"
},
"typeVersion": 1
},
{
"id": "ebf6c15b-e4e0-4db0-bb4e-36e204fb6a47",
"name": "便签2",
"type": "n8n-nodes-base.stickyNote",
"position": [
-880,
-740
],
"parameters": {
"width": 460,
"height": 1120,
"content": "## 试试看！"
},
"typeVersion": 1
}
],
"pinData": {},
"connections": {
"Operation": {
"main": [
[
{
"node": "writeOneOrMultipleFiles",
"type": "main",
"index": 0
}
],
[
{
"node": "readOneOrMultipleFiles",
"type": "main",
"index": 0
}
]
]
},
"ReadFiles": {
"ai_tool": [
[
{
"node": "FileSystem MCP Server",
"type": "ai_tool",
"index": 0
}
]
]
},
"WriteFiles": {
"ai_tool": [
[
{
"node": "FileSystem MCP Server",
"type": "ai_tool",
"index": 0
}
]
]
},
"ListDirectory": {
"ai_tool": [
[
{
"node": "FileSystem MCP Server",
"type": "ai_tool",
"index": 0
}
]
]
},
"CreateDirectory": {
"ai_tool": [
[
{
"node": "FileSystem MCP Server",
"type": "ai_tool",
"index": 0
}
]
]
},
"SearchDirectory": {
"ai_tool": [
[
{
"node": "FileSystem MCP Server",
"type": "ai_tool",
"index": 0
}
]
]
},
"When Executed by Another Workflow": {
"main": [
[
{
"node": "Operation",
"type": "main",
"index": 0
}
]
]
}
}
}常见问题
如何使用这个工作流？
复制上方的 JSON 配置代码，在您的 n8n 实例中创建新工作流并选择「从 JSON 导入」，粘贴配置后根据需要修改凭证设置即可。
这个工作流适合什么场景？
中级
需要付费吗？
本工作流完全免费，您可以直接导入使用。但请注意，工作流中使用的第三方服务（如 OpenAI API）可能需要您自行付费。
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工作流信息
难度等级
中级
节点数量14
分类-
节点类型7
作者
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
外部链接
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