Simple MCP FileServer by aezizhu - MCP Server

MCP FileBridge 🌉

🚀 Smart MCP server that bridges LLMs to files and images with zero hallucination. Perfect for Claude, GPT-4V, and all vision-enabled AI models.

🚀 Features

Core Capabilities

🔒 Enterprise Security: JWT authentication, role-based access control, rate limiting
📊 Advanced Monitoring: Prometheus metrics, health checks, distributed tracing
🔌 Plugin Architecture: Extensible plugin system with hot-reloading
⚡ High Performance: Redis caching, connection pooling, optimized processing
🖼️ Multimodal Processing: Advanced image analysis, OCR, EXIF metadata extraction
📝 Comprehensive Logging: Structured logging with multiple transports
🐳 Production Ready: Docker support, Kubernetes manifests, CI/CD pipelines

Technical Excellence

TypeScript First: Full type safety with strict compiler settings
Dependency Injection: Inversify.js for clean architecture
Validation: Joi/Zod schemas for request validation
Testing: Comprehensive test suite with Vitest and Playwright
Documentation: Auto-generated API docs with TypeDoc
Code Quality: ESLint, Prettier, Husky pre-commit hooks

🚀 Quick Start

Prerequisites

Node.js 18+
npm 9+
Redis (optional, for caching)
MongoDB (optional, for persistence)

Installation

# Clone the repository
git clone https://github.com/aezizhu/mcp-filebridge.git
cd mcp-filebridge

# Install dependencies
npm install

# Build the project
npm run build

# Start the server
npm start

Docker Quick Start

# Build and run with Docker
npm run docker:build
npm run docker:run

# Or use Docker Compose
docker-compose up -d

Basic Usage

# Health check
curl http://localhost:3000/health

# MCP Initialize
curl -X POST http://localhost:3000/mcp \\
  -H "Content-Type: application/json" \\
  -d '{
    "jsonrpc": "2.0",
    "method": "initialize",
    "params": {
      "protocolVersion": "2024-11-05",
      "capabilities": {},
      "clientInfo": {
        "name": "test-client",
        "version": "1.0.0"
      }
    },
    "id": 1
  }'

⚙️ Configuration

Environment Variables

# Server Configuration
NODE_ENV=production
HOST=0.0.0.0
PORT=3000

# Security
JWT_SECRET=your-super-secret-key
RATE_LIMIT_WINDOW_MS=900000
RATE_LIMIT_MAX_REQUESTS=100

# Cache Configuration
CACHE_TYPE=redis
REDIS_HOST=localhost
REDIS_PORT=6379
REDIS_PASSWORD=your-redis-password

# Database (Optional)
DATABASE_TYPE=mongodb
DATABASE_URL=mongodb://localhost:27017/mcp-server

# Monitoring
METRICS_ENABLED=true
TRACING_ENABLED=true
LOG_LEVEL=info

Configuration File

Create config/production.json:

{
  "server": {
    "host": "0.0.0.0",
    "port": 3000,
    "cors": {
      "enabled": true,
      "origin": ["https://yourdomain.com"],
      "methods": ["GET", "POST", "OPTIONS"],
      "allowedHeaders": ["Content-Type", "Authorization"],
      "credentials": true
    },
    "rateLimit": {
      "enabled": true,
      "windowMs": 900000,
      "maxRequests": 100,
      "message": "Too many requests"
    },
    "security": {
      "helmet": true,
      "authentication": {
        "enabled": true,
        "jwt": {
          "secret": "${JWT_SECRET}",
          "expiresIn": "24h"
        }
      }
    }
  },
  "logging": {
    "level": "info",
    "format": "json",
    "transports": [
      {
        "type": "console",
        "options": {}
      },
      {
        "type": "file",
        "options": {
          "filename": "logs/app.log",
          "maxsize": 10485760,
          "maxFiles": 5
        }
      }
    ]
  },
  "cache": {
    "enabled": true,
    "type": "redis",
    "ttl": 300,
    "redis": {
      "host": "${REDIS_HOST}",
      "port": "${REDIS_PORT}",
      "password": "${REDIS_PASSWORD}",
      "db": 0
    }
  },
  "monitoring": {
    "enabled": true,
    "metrics": {
      "enabled": true,
      "endpoint": "/metrics"
    },
    "health": {
      "enabled": true,
      "endpoint": "/health"
    }
  }
}

📚 API Documentation

MCP Protocol Methods

Initialize

Establishes connection and negotiates capabilities.

{
  "jsonrpc": "2.0",
  "method": "initialize",
  "params": {
    "protocolVersion": "2024-11-05",
    "capabilities": {},
    "clientInfo": {
      "name": "client-name",
      "version": "1.0.0"
    }
  },
  "id": 1
}

Tools

List Tools

{
  "jsonrpc": "2.0",
  "method": "tools/list",
  "id": 2
}

Execute Tool

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "analyze_image",
    "arguments": {
      "path": "/path/to/image.jpg",
      "include_ocr": true,
      "return_base64": true
    }
  },
  "id": 3
}

Available Tools

File Operations

read_file: Read text or binary files
write_file: Write content to files
list_directory: List directory contents with metadata

Image Analysis

analyze_image: Technical image analysis without hallucination
- Extracts metadata (dimensions, format, EXIF)
- OCR text extraction with Tesseract.js
- Base64 encoding for LLM vision analysis
- Supports: JPEG, PNG, GIF, BMP, WebP, TIFF, SVG

Network Operations

download_image: Download images from URLs
fetch_url: Fetch content from web URLs

System Operations

get_server_info: Server status and statistics
health_check: Comprehensive health assessment

Response Format

All responses follow JSON-RPC 2.0 specification:

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "content": [
      {
        "type": "text",
        "text": "Response content here"
      }
    ]
  }
}

Error responses:

{
  "jsonrpc": "2.0",
  "id": 1,
  "error": {
    "code": -32603,
    "message": "Internal error",
    "data": {
      "timestamp": "2024-01-01T00:00:00.000Z",
      "server": "@aezizhu/mcp-enterprise-server"
    }
  }
}

🔌 Plugin Development

Creating a Plugin

// plugins/my-plugin/index.ts
import { Plugin, PluginContext, Tool } from '@aezizhu/mcp-enterprise-server';

export default class MyPlugin implements Plugin {
  name = 'my-plugin';
  version = '1.0.0';
  
  async initialize(context: PluginContext): Promise<void> {
    context.logger.info('MyPlugin initialized');
    
    // Register tools
    context.toolRegistry.register({
      name: 'my_tool',
      description: 'My custom tool',
      inputSchema: {
        type: 'object',
        properties: {
          input: { type: 'string' }
        },
        required: ['input']
      },
      handler: this.handleMyTool.bind(this)
    });
  }
  
  private async handleMyTool(args: { input: string }): Promise<any> {
    return {
      content: [{
        type: 'text',
        text: `Processed: ${args.input}`
      }]
    };
  }
}

Plugin Manifest

{
  "name": "my-plugin",
  "version": "1.0.0",
  "description": "My custom MCP plugin",
  "author": "Your Name",
  "main": "dist/index.js",
  "mcpVersion": "2024-11-05",
  "capabilities": ["tools", "resources"],
  "configuration": {
    "type": "object",
    "properties": {
      "apiKey": { "type": "string" },
      "endpoint": { "type": "string" }
    }
  }
}

🐳 Deployment

Docker

# Dockerfile included in repository
FROM node:18-alpine
WORKDIR /app
COPY package*.json ./
RUN npm ci --only=production
COPY dist ./dist
EXPOSE 3000
CMD ["node", "dist/index.js"]

Kubernetes

# k8s/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: mcp-enterprise-server
spec:
  replicas: 3
  selector:
    matchLabels:
      app: mcp-enterprise-server
  template:
    metadata:
      labels:
        app: mcp-enterprise-server
    spec:
      containers:
      - name: mcp-server
        image: aezizhu/mcp-enterprise-server:latest
        ports:
        - containerPort: 3000
        env:
        - name: NODE_ENV
          value: "production"
        - name: REDIS_HOST
          value: "redis-service"
        resources:
          requests:
            memory: "256Mi"
            cpu: "250m"
          limits:
            memory: "512Mi"
            cpu: "500m"
        livenessProbe:
          httpGet:
            path: /health
            port: 3000
          initialDelaySeconds: 30
          periodSeconds: 10
        readinessProbe:
          httpGet:
            path: /health
            port: 3000
          initialDelaySeconds: 5
          periodSeconds: 5

Docker Compose

version: '3.8'
services:
  mcp-server:
    build: .
    ports:
      - "3000:3000"
    environment:
      - NODE_ENV=production
      - REDIS_HOST=redis
      - DATABASE_URL=mongodb://mongodb:27017/mcp
    depends_on:
      - redis
      - mongodb
    restart: unless-stopped
    
  redis:
    image: redis:7-alpine
    ports:
      - "6379:6379"
    volumes:
      - redis_data:/data
    restart: unless-stopped
    
  mongodb:
    image: mongo:7
    ports:
      - "27017:27017"
    volumes:
      - mongodb_data:/data/db
    restart: unless-stopped
    
  prometheus:
    image: prom/prometheus
    ports:
      - "9090:9090"
    volumes:
      - ./monitoring/prometheus.yml:/etc/prometheus/prometheus.yml
    restart: unless-stopped

volumes:
  redis_data:
  mongodb_data:

📊 Monitoring

Metrics

The server exposes Prometheus metrics at /metrics:

Request metrics: mcp_requests_total, mcp_request_duration_seconds
Tool metrics: mcp_tool_executions_total, mcp_tool_duration_seconds
System metrics: mcp_memory_usage_bytes, mcp_cpu_usage_percent
Cache metrics: mcp_cache_hits_total, mcp_cache_misses_total

Health Checks

Health endpoint at /health provides:

{
  "status": "healthy",
  "timestamp": "2024-01-01T00:00:00.000Z",
  "uptime": 86400000,
  "version": "1.0.0",
  "services": {
    "cache": true,
    "plugins": true,
    "tools": true,
    "resources": true
  },
  "metrics": {
    "requests_per_second": 10.5,
    "average_response_time": 150,
    "memory_usage_mb": 256,
    "cpu_usage_percent": 15.2
  }
}

Grafana Dashboard

Import the included Grafana dashboard from monitoring/grafana-dashboard.json for comprehensive monitoring visualization.

🔒 Security

Authentication

JWT-based authentication with configurable expiration:

# Get token
curl -X POST http://localhost:3000/auth/login \\
  -H "Content-Type: application/json" \\
  -d '{"username": "admin", "password": "password"}'

# Use token
curl -X POST http://localhost:3000/mcp \\
  -H "Authorization: Bearer YOUR_JWT_TOKEN" \\
  -H "Content-Type: application/json" \\
  -d '{"jsonrpc": "2.0", "method": "tools/list", "id": 1}'

Authorization

Role-based access control (RBAC):

{
  "roles": {
    "admin": ["*"],
    "user": ["tools:read", "tools:execute", "resources:read"],
    "readonly": ["tools:read", "resources:read"]
  }
}

Security Headers

Automatic security headers via Helmet.js:

Content Security Policy
HSTS
X-Frame-Options
X-Content-Type-Options
Referrer Policy

Rate Limiting

Configurable rate limiting per IP/user:

Default: 100 requests per 15 minutes
Customizable per endpoint
Redis-backed for distributed deployments

🧪 Testing

Unit Tests

# Run all tests
npm test

# Run with coverage
npm run test:coverage

# Watch mode
npm run test:watch

Integration Tests

# Run integration tests
npm run test:integration

E2E Tests

# Run end-to-end tests
npm run test:e2e

Performance Testing

# Run benchmarks
npm run benchmark

🔧 Development

Setup Development Environment

# Install dependencies
npm install

# Start development server with hot reload
npm run start:dev

# Run type checking
npm run typecheck

# Lint code
npm run lint

# Format code
npm run format

Project Structure

src/
├── core/                 # Core server components
│   ├── server.ts        # Main server class
│   ├── tool-registry.ts # Tool management
│   └── resource-registry.ts
├── services/            # Business logic services
│   ├── config.service.ts
│   ├── logger.service.ts
│   ├── metrics.service.ts
│   └── cache.service.ts
├── middleware/          # Express middleware
│   ├── auth.middleware.ts
│   ├── validation.middleware.ts
│   └── error-handler.ts
├── plugins/            # Plugin system
│   ├── base-plugin.ts
│   └── plugin-manager.ts
├── tools/              # Built-in tools
│   ├── file-tools.ts
│   ├── image-tools.ts
│   └── system-tools.ts
├── types/              # TypeScript definitions
│   └── mcp.ts
└── utils/              # Utility functions
    ├── validation.ts
    └── helpers.ts

📈 Performance

Benchmarks

Throughput: 1000+ requests/second
Latency: <100ms average response time
Memory: <512MB under load
Concurrent connections: 10,000+

Optimization Features

Connection pooling: Reuse database connections
Response caching: Redis-backed caching layer
Compression: Gzip compression for responses
Streaming: Large file streaming support
Clustering: Multi-process support

🤝 Contributing

We welcome contributions! Please see for guidelines.

Development Workflow

Fork the repository
Create a feature branch: git checkout -b feature/amazing-feature
Make changes and add tests
Run the validation suite: npm run validate
Commit changes: git commit -m 'Add amazing feature'
Push to branch: git push origin feature/amazing-feature
Open a Pull Request

Code Standards

TypeScript: Strict mode enabled
ESLint: Airbnb configuration with security rules
Prettier: Consistent code formatting
Conventional Commits: Semantic commit messages
Test Coverage: Minimum 80% coverage required

📄 License

This project is licensed under the MIT License - see the file for details.

🙏 Acknowledgments

Model Context Protocol specification
OpenAI for vision model inspiration
Anthropic for Claude integration patterns
Open source community for excellent libraries

📞 Support

Documentation:
Issues: GitHub Issues
Discussions: GitHub Discussions
Email: aezizhu@example.com

Built with ❤️ by aezizhu - Enterprise-grade MCP server for production environments