EuConquisto Composer MCP

--- document: Task Specification - Hybrid Fallback System version: 1.0.0 status: active author: Claude Code created: 2025-06-28 last_updated: 2025-06-28 --- # TASK-002: Hybrid Fallback System Implementation ## 📋 Task Overview **Task ID**: TASK-002 **Title**: Hybrid Fallback System Implementation **Status**: pending **Owner**: Claude Desktop **Priority**: high **Dependencies**: TASK-001 (completed) **Created**: 2025-06-28 13:52 EST **Updated**: 2025-06-28 13:52 EST ## 🎯 Objective Implement a hybrid system that attempts HTTP API calls first, then gracefully falls back to browser automation when API endpoints return 500 errors or are unavailable. ## 📊 Current Context ### Completed Prerequisites - ✅ HTTP API client implementation complete (`/src/api-client.ts`) - ✅ Composition manager with widget creation ready (`/src/composition-manager.ts`) - ✅ MCP server tools updated for API usage (`/src/index-api.ts`) - ✅ Browser automation implementation available (`/src/lib/composition-lifecycle.ts`) ### Identified Issues - ❌ Storage API endpoints return 500 Internal Server Error - ❌ All API operations currently fail despite valid JWT authentication - ✅ Browser automation confirmed working in previous sessions ## 🏗️ 4-Phase Execution Plan ### Phase 1: Understand Scope, Plan Implementation, Define Deliverables #### Scope Analysis ``` Hybrid System Components: ├── Health Check Service │ ├── API endpoint availability monitoring │ ├── Response time measurement │ └── Error rate tracking ├── Fallback Strategy Manager │ ├── Decision logic (API vs Browser) │ ├── Retry mechanisms │ └── Performance tracking ├── Unified Interface │ ├── Single entry point for operations │ ├── Transparent fallback switching │ └── Consistent response format └── Configuration Management ├── Fallback preferences ├── Timeout settings └── Retry policies ``` #### Implementation Plan ``` 1. Create Health Check Service - Monitor API endpoints (/storage/v1.0/*) - Track success/failure rates - Implement circuit breaker pattern 2. Develop Fallback Strategy Manager - Decision matrix: API availability vs operation type - Graceful degradation policies - Performance metrics collection 3. Build Unified Interface - Single composition service entry point - Automatic fallback detection - Consistent error handling 4. Update MCP Server Integration - Replace direct API calls with hybrid service - Maintain existing tool interfaces - Add fallback status reporting ``` #### Deliverables ``` Primary Artifacts: ├── /src/services/health-check.ts ├── /src/services/fallback-strategy.ts ├── /src/services/hybrid-composition.ts ├── /src/index-hybrid.ts (Updated MCP server) ├── /tests/hybrid-system.test.js └── /docs/analysis/hybrid-architecture.md Configuration: ├── /config/fallback-policy.json └── /config/health-check.json Documentation: ├── /docs/guides/hybrid-usage.md └── /docs/analysis/fallback-performance.md ``` **STOP AND WAIT** - Do not proceed to implementation **DO NOT** update knowledge graph **PAUSE** for explicit next-phase instructions ### Phase 2: Implementation #### Step 1: Create Artifacts ``` Implementation Order: 1. Health Check Service (/src/services/health-check.ts) - API endpoint monitoring - Circuit breaker implementation - Performance metrics 2. Fallback Strategy Manager (/src/services/fallback-strategy.ts) - Decision logic implementation - Retry mechanisms - Error classification 3. Hybrid Composition Service (/src/services/hybrid-composition.ts) - Unified interface - Automatic fallback - Response normalization 4. Updated MCP Server (/src/index-hybrid.ts) - Integration with hybrid service - Tool method updates - Status reporting 5. Test Suite (/tests/hybrid-system.test.js) - API failure simulation - Fallback validation - Performance testing ``` #### Step 2: Validate ``` Testing Protocol: 1. API Availability Testing - Simulate 500 errors - Test network timeouts - Validate circuit breaker 2. Fallback Validation - Confirm browser automation triggers - Test seamless switching - Verify response consistency 3. Performance Benchmarking - Measure fallback time - Track success rates - Monitor resource usage 4. Integration Testing - MCP server compatibility - Tool interface validation - End-to-end workflows ``` **STOP AND WAIT** - Do not proceed to Phase 3 **DO NOT** update knowledge graph **PAUSE** for explicit next-phase instructions ### Phase 3: Documentation #### Step 1: Knowledge Graph Updates ``` Entities to Create: ├── Hybrid Fallback System Entity ├── Health Check Service Entity ├── Fallback Strategy Entity └── Performance Metrics Entity Relations to Establish: ├── System → Uses → Health Check ├── System → Implements → Fallback Strategy ├── MCP Server → Integrates → Hybrid System └── API Client → Falls Back To → Browser Automation ``` #### Step 2: Progress Tracking ``` Documentation Updates: ├── /docs/progress/2025-06-28.md (update completion) ├── /docs/architecture/hybrid-system.md (new) ├── /docs/guides/troubleshooting.md (update) └── README.md (update features section) Status Updates: ├── Mark TASK-002 as COMPLETED ├── Document created files ├── Update deployment checklist └── Synchronize all documentation ``` **STOP AND WAIT** - Do not proceed to Phase 4 **DO NOT** update knowledge graph **PAUSE** for explicit next-phase instructions ### Phase 4: Thorough Verification #### Validation Protocol ``` 1. Implementation Completeness Check ├── Verify all deliverables created ├── Check all deliverables tested └── Validate artifact functionality 2. System Validation ├── Test against existing codebase ├── Validate MCP server compatibility └── Confirm fallback reliability 3. Documentation Validation ├── Verify versioning headers ├── Check documentation completeness └── Validate cross-references ``` #### Verification Checklist ``` Per Task Verification: □ Health Check Service implemented and tested □ Fallback Strategy Manager functional □ Hybrid Composition Service operational □ MCP Server integration complete □ Test suite passes all scenarios □ Documentation complete and versioned □ Performance benchmarks recorded □ Fallback reliability confirmed ``` ## 🔗 Related Files ### Dependencies - `/src/api-client.ts` - HTTP API implementation - `/src/composition-manager.ts` - Composition operations - `/src/lib/composition-lifecycle.ts` - Browser automation - `/correct-jwt-new.txt` - Authentication token ### Analysis References - `/docs/analysis/api-investigation.md` - API server issues - `/docs/csharp_interface_api/` - Interface specifications - `/test-api-*.js` - API testing results ## 📈 Success Criteria ### Primary Goals 1. **Seamless Fallback**: Automatic switch from API to browser automation 2. **Reliability**: >99% operation success rate regardless of API status 3. **Performance**: <2 second fallback detection and switching 4. **Transparency**: Consistent interface for MCP tools ### Secondary Goals 1. **Monitoring**: Real-time health status visibility 2. **Configuration**: Adjustable fallback policies 3. **Metrics**: Performance and reliability tracking 4. **Documentation**: Complete usage and troubleshooting guides --- **Note**: This task ensures the MCP server remains functional regardless of API server availability, providing robust and reliable composition management capabilities.