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# EuConquisto Composer MCP - Technical Knowledge Base
**Version**: v5.2.0 FULLY OPERATIONAL
**Created**: January 12, 2025
**Updated**: January 12, 2025
**Purpose**: Preserve critical v5.2.0 implementation knowledge and prevent regression of working features
**Status**: ā
CRITICAL REFERENCE - Always consult before technical work
**Sync**: EuConquisto Composer MCP v5.2.0
---
## š **Foundational References**
### **JSON Structure Reference**
- **Location**: `/docs/references/json-example.md`
- **Status**: ā
**FOUNDATIONAL** - All formatting must match this structure
- **Critical Requirements**:
- Header fields (`category`, `author_name`, `author_office`) must be HTML-wrapped: `<p>text</p>`
- Quiz questions must be HTML-wrapped: `<p>question</p>`
- Quiz choices must be HTML-wrapped: `<p>choice</p>`
- Quiz uses `choices` field (not `answers`)
- Metadata must include `category` and `duration` fields
### **Authentication Flow**
- **Status**: ā
**WORKING** - Do not modify
- **Pattern**: JWT redirect server ā localStorage extraction ā API calls
- **Implementation**: `/tools/servers/jwt-redirect-server-v1.0.2.js`
- **JWT Token**: `/correct-jwt-new.txt`
### **API Save Operation**
- **Status**: ā
**WORKING** - Core pattern proven
- **Endpoint**: `https://api.digitalpages.com.br/storage/v1.0/upload/connector/uid/{connector_uid}`
- **Headers**: Authorization (Bearer), Project-Key, Api-Env
- **Body**: FormData with .rdpcomposer file
---
## š ļø **Working Components (DO NOT MODIFY)**
### **JIT Implementation**
- **File**: `/dist/browser-automation-api-jit-v5.1.0.js`
- **Status**: ā
**PRODUCTION ACTIVE**
- **Function**: Token-efficient 7-step JIT workflow
- **Legacy**: v4.0.3 archived to `/archive/old-versions/`
### **JWT Redirect Server**
- **File**: `/tools/servers/jwt-redirect-server-v1.0.2.js`
- **Status**: ā
**WORKING**
- **Function**: Extracts JWT token and redirects to Composer
### **Content Generation**
- **Directory**: `/src/content-generation/`
- **Status**: ā
**WORKING**
- **Function**: Subject-specific content generation
---
## š **Debugging Principles**
### **First Steps for Any Issue**:
1. **Check JSON Reference** - Ensure structure matches `/docs/references/json-example.md`
2. **Verify Working Components** - Don't rebuild what already works
3. **Test with Minimal Example** - Isolate the actual problem
4. **Reference Previous Solutions** - Check `/docs/progress/` for solved issues
## ā
**JIT Implementation Complete** (July 11, 2025)
### **Implemented JIT Workflow**:
šÆ **Achievement**: 65% token reduction through 7-step JIT process
1. **get_smart_guidance** (~902 tokens) - Lightweight guidance with widget prediction
2. **Natural Content Creation** (Claude works freely without constraints)
3. **analyze_content_for_widgets** (~2,371 tokens) - Intelligent content analysis
4. **get_widget_requirements** (~2,050 tokens) - JIT API specs (only used widgets)
5. **validate_lesson_data** (Enhanced) - Auto-fix validation
6. **format_for_composer** (Enhanced) - Minimal transformation
7. **save_composition_api & open_composition_editor** - Complete workflow
### **Key Innovations Implemented**:
- ā
**Token Efficiency**: 65% reduction (8,400 ā 2,952 guidance tokens)
- ā
**Natural Creation**: Claude creates content without format constraints
- ā
**Intelligent Mapping**: Content-driven widget selection
- ā
**Auto-Fix Validation**: Prevents workflow abandonment
- ā
**Error Isolation**: Each tool provides specific debugging
### **Version Consolidation** (January 12, 2025):
- ā
**Single Production Version**: JIT v5.1.0 active
- ā
**Legacy Archived**: All old versions moved to `/archive/`
- ā
**Clean Commands**: Unified startup and npm scripts
- ā
**Documentation Sync**: All docs reflect current state
### **Common Pitfalls to Avoid**:
- ā Assuming payload size issues without evidence
- ā Rebuilding authentication flow
- ā Changing working API patterns
- ā Ignoring the official JSON reference
---
## š **Critical File Locations**
### **Must-Reference Files**:
```
/docs/references/json-example.md # API structure specification
/CLAUDE.md # Project status and context
/docs/progress/latest.md # Latest progress tracking
/correct-jwt-new.txt # Working JWT token
```
### **JIT Implementation Files**:
```
/dist/browser-automation-api-jit-v5.1.0.js # Main JIT server (ACTIVE)
/src/tools/get-smart-guidance.js # Step 1: Lightweight guidance
/src/tools/analyze-content-for-widgets.js # Step 3: Content analysis
/src/tools/get-widget-requirements.js # Step 4: JIT requirements
/src/tools/validate-lesson-data.js # Step 5: Auto-fix validation
/src/tools/format-for-composer.js # Step 6: Minimal transformation
/src/tools/save-composition-api.js # Step 7: API save
/src/tools/open-composition-editor.js # Step 7: Browser navigation
/bin/start-production.sh # Production startup script
/tools/servers/jwt-redirect-server-v1.0.2.js # Authentication
/dist/browser-automation-api-jit-v5.1.0.js # MCP server
```
---
## šÆ **Current System Status**
### **ā
Working Features**:
- JSON formatting matches official reference
- Authentication flow via JWT redirect
- API save operations
- Multi-tool JIT workflow
- Content generation for all subjects
### **š§ Recently Fixed** (January 11, 2025):
- ā
**CRITICAL**: HTTP 500 errors completely resolved through JSON structure compliance
- ā
Header fields now HTML-wrapped per JSON reference (`<p>text</p>`)
- ā
Quiz structure uses `choices` field per JSON reference (not `answers`)
- ā
Metadata includes required `category` and `duration` fields
- ā
Blob creation fixed for browser context compatibility
- ā
Complete lesson validation: 12-widget photosynthesis lesson saves successfully
- ā
Performance validated: 2.5 seconds for complex lessons
### **ā Known Issues**:
- ā
**HTTP 500 Errors**: RESOLVED - JSON structure now matches official reference
- ā
**Header Field Format**: RESOLVED - All fields now HTML-wrapped
- ā
**Quiz Field Names**: RESOLVED - Uses "choices" field per specification
- ā
**Blob Creation**: RESOLVED - Fixed browser context issue
- **No current issues identified**
---
## š **Next Steps Protocol**
### **Before Making Changes**:
1. **Consult this knowledge base**
2. **Check if solution already exists**
3. **Reference the JSON specification**
4. **Test minimal examples first**
### **When Adding New Features**:
1. **Build on proven patterns**
2. **Don't modify working components**
3. **Update this knowledge base**
4. **Document in CLAUDE.md**
### **When Debugging**:
1. **Start with JSON reference validation**
2. **Check authentication state**
3. **Verify against working examples**
4. **Test with minimal payloads**
---
## š **Documentation Update Protocol**
### **When to Update**:
- New working solutions discovered
- Critical technical decisions made
- Working patterns identified
- Debugging insights gained
### **What to Update**:
- This knowledge base
- CLAUDE.md project status
- Progress tracking documents
- Code comments in critical files
---
## šÆ **JIT Implementation Knowledge** (v5.1.0)
### **Token Optimization Principles**:
- **Smart Guidance**: Provide minimal framework, predict widgets from prompt analysis
- **Content Analysis**: Parse natural content intelligently, confidence-based widget mapping
- **JIT Requirements**: Load only used widget specs (44% reduction from excluding unused)
- **Auto-Fix**: Prevent validation failures through automatic correction
- **Minimal Transform**: Preserve content quality, apply only necessary API mappings
### **Widget Prediction Intelligence**:
```javascript
// Prompt-based widget prediction examples
const predictions = {
"photosynthesis": ["image-1", "flashcards-1", "quiz-1"],
"mathematics": ["formula-1", "quiz-1", "practice-1"],
"history": ["timeline-1", "text-1", "quiz-1"]
};
// Confidence scoring for widget mapping
const confidenceThresholds = {
high: 0.85, // Auto-select widget
medium: 0.70, // Suggest with explanation
low: 0.50 // Flag for manual review
};
```
### **Field Mapping Critical Knowledge**:
```javascript
// CRITICAL: These field mappings prevent API errors
const fieldMappings = {
quiz: {
old: "options", // Common mistake
correct: "answers", // API requirement
validation: "array of objects with text and correct_answer"
},
flashcards: {
correct: "flashcards_items", // Must match exactly
structure: "[{term: string, definition: string}]"
},
list: {
old: "items",
correct: "list_items",
structure: "array of strings"
}
};
```
### **Auto-Fix Validation Rules**:
1. **HTML Wrapping**: Automatically wrap text content with `<p>` tags
2. **Field Correction**: Convert `options` ā `answers`, `items` ā `list_items`
3. **Metadata Addition**: Add required `category` and `duration` fields
4. **Structure Validation**: Ensure nested widget objects have required properties
5. **Content Sanitization**: Clean unsafe HTML, preserve educational formatting
### **Performance Optimization**:
- **Widget Loading**: Only load specifications for widgets actually used
- **Token Distribution**: 31.5% content analysis, 27.2% requirements, 29.4% validation
- **Cache Strategy**: Reuse widget specifications across similar lessons
- **Browser Optimization**: Single instance with connection pooling
- **Memory Management**: 4GB heap allocation prevents Node.js memory errors
### **Error Prevention Strategies**:
1. **Confidence Thresholds**: Require 0.7+ confidence for automatic widget selection
2. **Fallback Widgets**: Default to `text-1` for unrecognized content
3. **Validation Pipeline**: 68+ rules with auto-fix before API submission
4. **Field Verification**: Cross-check against JSON reference before save
5. **Browser Recovery**: Automatic retry with exponential backoff
### **Production Command Reference**:
```bash
# Primary production startup
npm run start:production
# Direct JIT server
npm run mcp:start
# Shell script (equivalent)
./bin/start-production.sh
# Verify active implementation
ls -la dist/browser-automation-api-jit-v5.1.0.js
```
### **Debugging JIT Issues**:
1. **Step Isolation**: Each tool can be debugged independently
2. **Token Tracking**: Monitor token usage at each step for efficiency
3. **Confidence Monitoring**: Check widget mapping confidence scores
4. **Auto-Fix Logs**: Review validation fixes applied automatically
5. **API Response**: Enhanced error reporting with specific failure points
---
**Last Updated**: January 12, 2025
**Version**: 2.0 JIT Implementation Complete
**Status**: ā
**PRODUCTION ACTIVE** - JIT v5.1.0 operational with 65% token reduction