MCP API Server

# Implementation Plan - [x] 1. Create basic HTML structure and styling foundation - Create the main HTML file with semantic structure for all UI panels - Implement responsive CSS layout using CSS Grid and Flexbox - Add base styling for forms, buttons, and interactive elements - Include CSS variables for consistent theming and colors - _Requirements: 6.1, 6.2, 6.3_ - [x] 2. Implement core JavaScript modules and utilities - [x] 2.1 Create ValidationUtils module with input validation functions - Write URL validation function with proper regex patterns - Implement JSON schema validation for tool parameters - Create header validation and sanitization functions - Add validation error formatting utilities - _Requirements: 3.5, 1.4_ - [x] 2.2 Create HistoryManager module for interaction tracking - Implement interaction storage with timestamp and metadata - Add history filtering and search functionality - Create history export functionality for debugging - Implement history size limits and cleanup - _Requirements: 4.1, 4.2, 4.3, 4.4_ - [x] 3. Build MCP protocol communication layer - [x] 3.1 Implement MCPClient class with connection management - Create connection state management with status tracking - Implement JSON-RPC message formatting and ID correlation - Add WebSocket/HTTP communication with error handling - Create event-driven interface for message handling - _Requirements: 1.1, 1.2, 1.3, 1.4, 5.1_ - [x] 3.2 Add MCP protocol handshake and initialization - Implement server capability negotiation - Add server information retrieval and display - Create connection retry logic with exponential backoff - Handle protocol version compatibility checks - _Requirements: 1.2, 1.3, 5.1, 5.2_ - [-] 4. Implement tools discovery and display functionality - [x] 4.1 Create tools listing and parsing logic - Implement tools/list request handling - Parse and validate tool schema definitions - Create tool categorization and sorting - Add tool search and filtering capabilities - _Requirements: 2.1, 2.2, 2.3, 2.4, 5.2_ - [ ] 4.2 Build dynamic tool parameter form generation - Generate form fields based on JSON schema properties - Implement different input types for various parameter types - Add real-time parameter validation with visual feedback - Create form reset and auto-fill functionality - _Requirements: 3.1, 3.5, 2.2, 2.3_ - [ ] 5. Create tool execution and response handling - [ ] 5.1 Implement tool call request formatting and sending - Format tools/call requests with proper parameter validation - Add request timeout handling and cancellation - Implement request queuing for multiple simultaneous calls - Create request progress indicators and loading states - _Requirements: 3.2, 3.4, 3.5, 5.3_ - [ ] 5.2 Build response display and error handling - Parse and format tool call responses for display - Implement syntax highlighting for JSON responses - Add error response parsing and user-friendly error messages - Create response export and copy functionality - _Requirements: 3.3, 3.4, 5.4, 5.5_ - [ ] 6. Develop comprehensive UI management system - [ ] 6.1 Create UIManager class for coordinating all UI interactions - Implement panel state management and transitions - Add notification system for success/error messages - Create modal dialogs for detailed views - Implement keyboard shortcuts and accessibility features - _Requirements: 6.3, 6.4, 4.3_ - [ ] 6.2 Build connection panel with server URL input and status - Create connection form with URL validation - Implement connection status indicators with visual feedback - Add server information display panel - Create connection history dropdown for quick reconnection - _Requirements: 1.1, 1.2, 1.3, 1.4_ - [ ] 7. Implement interaction history and logging features - [ ] 7.1 Create history panel with request/response display - Build collapsible history entries with timestamps - Implement JSON formatting and syntax highlighting - Add history entry filtering by tool name and status - Create history entry details modal with full message display - _Requirements: 4.1, 4.2, 4.3, 5.1, 5.2, 5.3, 5.4, 5.5_ - [ ] 7.2 Add MCP protocol interaction visualization - Display complete JSON-RPC message flow - Show message correlation with request/response IDs - Implement protocol message type indicators - Add timing information for performance analysis - _Requirements: 5.1, 5.2, 5.3, 5.4, 5.5_ - [ ] 8. Add advanced features and polish - [ ] 8.1 Implement configuration and preferences system - Create settings panel for customizing behavior - Add theme selection (light/dark mode) - Implement history retention settings - Create export/import functionality for configurations - _Requirements: 6.3, 6.4_ - [ ] 8.2 Add comprehensive error handling and user feedback - Implement global error handler with user notifications - Add connection troubleshooting help and diagnostics - Create detailed error logging for debugging - Implement graceful degradation for unsupported features - _Requirements: 1.4, 3.4, 5.5, 6.4_ - [ ] 9. Finalize responsive design and accessibility - [ ] 9.1 Optimize responsive layout for all screen sizes - Test and refine mobile layout with touch-friendly controls - Implement collapsible panels for small screens - Add swipe gestures for mobile navigation - Optimize performance for slower devices - _Requirements: 6.2, 6.3_ - [ ] 9.2 Ensure full accessibility compliance - Add comprehensive ARIA labels and roles - Implement keyboard navigation for all interactive elements - Test with screen readers and fix accessibility issues - Add high contrast mode support - _Requirements: 6.3, 6.4_ - [ ] 10. Create comprehensive testing and documentation - [ ] 10.1 Add inline help and user documentation - Create contextual help tooltips for all features - Add getting started guide within the application - Implement example tool calls and sample data - Create troubleshooting section with common issues - _Requirements: 1.4, 3.4, 6.4_ - [ ] 10.2 Implement development and debugging features - Add debug mode with verbose logging - Create developer console for advanced users - Implement performance monitoring and metrics - Add automated testing utilities for MCP server validation - _Requirements: 5.1, 5.2, 5.3, 5.4, 5.5_