MCP Knowledge Base
A knowledge base server that processes local documents (PDF, DOCX, TXT, HTML) and answers questions based on their content using similarity search.
MCP 知识库服务器
这是一个基于 Model Context Protocol (MCP) 的知识库服务器,可以处理本地文档并根据文档内容回答问题。
功能特性
- 支持多种文档格式:PDF、DOCX、TXT、HTML
- 自动文档索引和搜索
- 基于相似度的文档检索
- 完整的 MCP 协议支持
- 中文文档处理支持
ModelScope MCP 服务配置
{
"name": "mcp-knowledge-base",
"version": "1.0.0",
"description": "基于本地文档的知识库问答MCP服务器",
"author": "yjy",
"license": "MIT",
"repository": {
"type": "git",
"url": "https://github.com/ikungsjl/mcp-knowledge-base.git"
},
"keywords": ["mcp", "knowledge-base", "document-processing", "qa"],
"main": "dist/index.js",
"type": "module",
"scripts": {
"build": "tsc",
"start": "node dist/index.js",
"dev": "tsx src/index.ts"
},
"dependencies": {
"@modelcontextprotocol/sdk": "^0.4.0",
"pdf-parse": "^1.1.1",
"mammoth": "^1.6.0",
"cheerio": "^1.0.0-rc.12",
"natural": "^6.10.4",
"fs-extra": "^11.2.0",
"glob": "^10.3.10"
},
"devDependencies": {
"@types/node": "^20.10.0",
"@types/fs-extra": "^11.0.4",
"@types/natural": "^5.1.5",
"@types/pdf-parse": "^1.1.4",
"typescript": "^5.3.0",
"tsx": "^4.6.0"
},
"mcp": {
"server": {
"command": "node",
"args": ["dist/index.js"],
"env": {}
},
"tools": [
{
"name": "add_document",
"description": "添加单个文档到知识库",
"inputSchema": {
"type": "object",
"properties": {
"file_path": {
"type": "string",
"description": "文档文件路径"
}
},
"required": ["file_path"]
}
},
{
"name": "add_directory",
"description": "添加目录中的所有文档到知识库",
"inputSchema": {
"type": "object",
"properties": {
"directory_path": {
"type": "string",
"description": "目录路径"
}
},
"required": ["directory_path"]
}
},
{
"name": "query_knowledge_base",
"description": "查询知识库",
"inputSchema": {
"type": "object",
"properties": {
"question": {
"type": "string",
"description": "查询问题"
},
"max_results": {
"type": "number",
"description": "最大返回结果数",
"default": 5
},
"threshold": {
"type": "number",
"description": "相似度阈值",
"default": 0.1
}
},
"required": ["question"]
}
},
{
"name": "list_documents",
"description": "列出知识库中的所有文档",
"inputSchema": {
"type": "object",
"properties": {}
}
},
{
"name": "get_document",
"description": "获取特定文档信息",
"inputSchema": {
"type": "object",
"properties": {
"document_id": {
"type": "string",
"description": "文档ID"
}
},
"required": ["document_id"]
}
},
{
"name": "remove_document",
"description": "从知识库中移除文档",
"inputSchema": {
"type": "object",
"properties": {
"document_id": {
"type": "string",
"description": "文档ID"
}
},
"required": ["document_id"]
}
},
{
"name": "clear_knowledge_base",
"description": "清空知识库",
"inputSchema": {
"type": "object",
"properties": {}
}
},
{
"name": "get_stats",
"description": "获取知识库统计信息",
"inputSchema": {
"type": "object",
"properties": {}
}
}
]
}
}
安装
- 克隆项目并安装依赖:
npm install
- 构建项目:
npm run build
使用方法
1. 启动服务器
npm start
2. 在 MCP 客户端中配置
在你的 MCP 客户端配置文件中添加:
{
"mcpServers": {
"knowledge-base": {
"command": "node",
"args": ["dist/index.js"],
"env": {}
}
}
}
3. 可用的工具
添加文档
add_document: 添加单个文档到知识库add_directory: 添加目录中的所有文档到知识库
查询知识库
query_knowledge_base: 查询知识库并获取答案
管理文档
list_documents: 列出所有文档get_document: 获取特定文档信息remove_document: 移除文档clear_knowledge_base: 清空知识库get_stats: 获取统计信息
配置
服务器会自动创建以下目录:
documents/: 存储文档文件index/: 存储索引数据
开发
# 开发模式
npm run dev
# 测试
npm test
项目结构
src/
├── types.ts # 类型定义
├── document-processor.ts # 文档处理器
├── knowledge-base.ts # 知识库核心
├── mcp-server.ts # MCP 服务器
└── index.ts # 入口文件
许可证
MIT
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