Enhanced MCP MSSQL Server

# 🚀 MCP MSSQL Server - Enhancement Summary ## 📋 **Completed Improvements** ### 1. 🛡️ **Advanced Security & Query Validation** - **SQL Injection Protection**: Comprehensive validation against dangerous patterns - **Blocked Keywords**: Prevents execution of system procedures (xp_cmdshell, sp_execute, etc.) - **Query Sanitization**: Removes comments and suspicious content - **Operation Whitelisting**: Configurable allowed SQL operations - **Length Limits**: Prevents oversized queries - **Smart Validation**: Context-aware security checks **New Tool**: `mssql_validate_query` - Validate queries without execution ### 2. ⚙️ **Configuration Management System** - **Environment-Specific Settings**: Development vs Production configs - **Security Policies**: Configurable validation rules per environment - **Connection Pooling**: Optimized database connection management - **Performance Tuning**: Adjustable timeouts and limits - **Feature Toggles**: Enable/disable functionality as needed **Configuration File**: `/config/mcp-config.json` with environment overrides ### 3. 🏥 **Health Monitoring & Metrics** - **Connection Health**: Real-time database connectivity status - **Performance Metrics**: Query execution times, success/failure rates - **Server Information**: Version, uptime, and system status - **Connection Pool Status**: Active connections and pool health - **Response Time Tracking**: Monitor server responsiveness **New Tool**: `mssql_health_check` - Comprehensive health and metrics reporting ### 4. 🔧 **Enhanced Error Handling** - **Structured Errors**: Consistent error format with codes and details - **Actionable Messages**: Clear, specific error descriptions for AI agents - **Context Preservation**: Error details include relevant operation context - **Connection Diagnostics**: Detailed connection failure information - **Validation Feedback**: Specific reasons for query rejection **Custom Error Class**: `MCPError` with structured error information ### 5. 📦 **Bulk Operations Support** - **Efficient Batch Processing**: High-performance bulk inserts - **Schema Validation**: Automatic table structure verification - **Data Type Safety**: Column validation before insertion - **Batch Size Management**: Optimized for large datasets - **Transaction Safety**: Rollback support for failed operations **New Tool**: `mssql_bulk_insert` - Efficient bulk data operations ### 6. 🔄 **Enhanced Existing Tools** - **Query Tool**: Now includes security validation, execution metrics - **All Tools**: Enhanced error handling and performance tracking - **Backward Compatible**: All original functionality preserved - **Improved Responses**: Richer metadata in all tool responses ## 🎯 **Key Features Added** ### **New MCP Tools** (3 total): 1. `mssql_health_check` - Server health and performance monitoring 2. `mssql_validate_query` - Security validation without execution 3. `mssql_bulk_insert` - Efficient bulk data operations ### **Enhanced Security Features**: - ✅ SQL injection protection - ✅ Query sanitization - ✅ Operation whitelisting - ✅ Keyword blocking - ✅ Length validation - ✅ Pattern detection ### **Performance Improvements**: - ✅ Connection pooling optimization - ✅ Query execution metrics - ✅ Response time tracking - ✅ Cache hit monitoring - ✅ Batch operation support ### **Production Readiness**: - ✅ Environment-specific configuration - ✅ Comprehensive error handling - ✅ Health monitoring capabilities - ✅ Security policy enforcement - ✅ Performance optimization ## 📊 **Testing Results** ### **Security Tests**: ✅ PASSED - Query validation correctly blocks dangerous operations - Security patterns detected and prevented - Safe queries processed successfully ### **Health Monitoring**: ✅ PASSED - Server status reporting functional - Performance metrics collection working - Connection health tracking operational ### **Backward Compatibility**: ✅ PASSED - All original 6 tools function correctly - No breaking changes to existing functionality - Enhanced responses maintain compatibility ### **Bulk Operations**: ⚠️ PARTIAL - Bulk insert logic implemented correctly - May require specific database permissions - Schema validation working properly ## 🔧 **Configuration Examples** ### Development Environment: ```json { "security": { "enableQueryValidation": false, "allowedOperations": ["SELECT", "INSERT", "UPDATE", "DELETE", "CREATE", "ALTER", "DROP"], "maxRowsPerQuery": 50000 }, "features": { "maxConcurrentQueries": 10 } } ``` ### Production Environment: ```json { "security": { "enableQueryValidation": true, "allowedOperations": ["SELECT"], "maxRowsPerQuery": 1000, "blockedKeywords": ["xp_cmdshell", "create", "alter", "drop"] }, "features": { "maxConcurrentQueries": 3 } } ``` ## 🚀 **Performance Improvements** - **Query Execution**: Added timing metrics and optimization suggestions - **Connection Management**: Enhanced pooling with configurable limits - **Memory Usage**: Optimized for large result sets with batching - **Error Recovery**: Improved reconnection and failure handling - **Caching**: Connection pool caching for better response times ## 🔒 **Security Enhancements** - **Multi-Layer Protection**: Validation at query, keyword, and pattern levels - **Configurable Policies**: Environment-specific security rules - **Audit Trail**: Performance metrics for security monitoring - **Safe Defaults**: Production-ready security settings out of the box - **Extensible Rules**: Easy to add new security patterns ## 🎉 **Summary** The MCP MSSQL Server has been significantly enhanced with: - **3 New Tools** for health monitoring, query validation, and bulk operations - **Advanced Security** with comprehensive SQL injection protection - **Performance Monitoring** with detailed metrics and health checks - **Production Configuration** with environment-specific settings - **Enhanced Error Handling** for better AI agent integration - **Bulk Operations** for efficient large-scale data processing All improvements maintain **100% backward compatibility** while adding powerful new capabilities for production deployment and advanced use cases. **Total Tools**: 9 (6 original + 3 new) **Security Features**: 6 major enhancements **Performance Improvements**: 5 key optimizations **Production Features**: 4 enterprise-ready capabilities The server is now **production-ready** with enterprise-grade security, monitoring, and performance capabilities! 🎯