IMPLEMENTATION_STATUS.md

Dynamic OpenRouter Model Selection - Implementation Status

✅ Completed Features

1. OpenRouter API Integration

• File: /lib/openrouter.ts
• Features:
  • OpenRouter API client with authentication
  • Model fetching from /api/v1/models
  • TypeScript interfaces for OpenRouter models
  • Rate limiting and error handling

2. API Route for Model Fetching

• File: /app/api/openrouter/models/route.ts
• Features:
  • Proxy endpoint for OpenRouter models API
  • API key validation
  • Error handling and response formatting

3. React Hook for Model Management

• File: /hooks/useOpenRouterModels.ts
• Features:
  • Model fetching with caching
  • Search and filtering capabilities
  • Category-based filtering
  • Loading states and error handling

4. Model Selector Component

• File: /components/openrouter-model-selector/index.tsx
• Features:
  • Modal-based model selection UI
  • Real-time search and filtering
  • Model information display (pricing, context length)
  • Category filtering
  • Loading states and error handling
  • Responsive design

5. Settings UI Integration

• File: /components/editor/ask-ai/settings.tsx
• Features:
  • Toggle between static and dynamic OpenRouter models
  • API key input with validation
  • Integration with model selector component
  • Local storage for API key and selected model

6. API Logic Updates

• File: /app/api/ask-ai/route.ts
• Features:
  • Support for custom OpenRouter models
  • Dynamic model validation
  • Provider selection for both static and dynamic models
  • Error handling for missing API keys

7. Provider System Cleanup

• File: /lib/providers.ts
• Changes:
  • Removed all static OpenRouter model definitions
  • Kept HuggingFace auto-provider intact
  • Maintained backward compatibility

🧪 Testing Checklist

Local Development Setup

1. ✅ Dependencies installed (npm install)
2. ⏳ Development server started (npm run dev)
3. ⏳ Application accessible at http://localhost:3000

Core Functionality Tests

1. API Key Management

   • Enter OpenRouter API key in settings
   • Validate API key format (sk-or-v1-*)
   • API key persisted in local storage
   • Error handling for invalid keys

2. Model Selection

   • Toggle "Use Custom OpenRouter Models" option
   • Open model selector dialog
   • Search models by name
   • Filter models by category
   • Select a model and confirm selection
   • Selected model persisted in local storage

3. Model Information Display

   • Model pricing information shown
   • Context length displayed
   • Model description visible
   • Category labels correct

4. Chat Functionality

   • Send a message with custom OpenRouter model
   • Verify API call uses OpenRouter endpoint
   • Streaming response works correctly
   • Error handling for API failures

5. UI/UX

   • Loading states display properly
   • Error messages are user-friendly
   • Modal opens/closes smoothly
   • Search is responsive
   • Mobile responsiveness

🔧 Environment Requirements

Required Environment Variables

• No environment variables required (API keys stored locally)

API Key Format

• OpenRouter API key format: sk-or-v1-*
• Minimum length: 20 characters

📝 Usage Instructions

For Users

1. Open the application settings panel
2. Toggle "Use Custom OpenRouter Models" to enable dynamic selection
3. Enter your OpenRouter API key (format: sk-or-v1-...)
4. Click "Select Model" to open the model browser
5. Search/filter models as needed
6. Select your preferred model
7. Start chatting with your chosen model

For Developers

1. Clone the repository
2. Run npm install to install dependencies
3. Start development server with npm run dev
4. Navigate to http://localhost:3000
5. Test the model selection flow

🔍 Key Files to Review

• /lib/openrouter.ts - Core OpenRouter integration
• /hooks/useOpenRouterModels.ts - Model management hook
• /components/openrouter-model-selector/index.tsx - Model selector UI
• /components/editor/ask-ai/settings.tsx - Settings integration
• /app/api/ask-ai/route.ts - Chat API with dynamic model support
• /app/api/openrouter/models/route.ts - Model fetching API

✨ Next Steps

1. Start the development server and test the complete flow
2. Verify all UI components render correctly
3. Test API integration with a valid OpenRouter API key
4. Confirm chat functionality works with selected models
5. Test error handling scenarios
6. Verify mobile responsiveness
7. Consider adding model favoriting/bookmarking feature
8. Add model performance metrics if available via API

🏗️ Architecture Notes

• Static Models: HuggingFace models remain statically defined
• Dynamic Models: OpenRouter models fetched from API
• Storage: API keys and preferences stored in localStorage
• Validation: Client-side and server-side API key validation
• Error Handling: Graceful degradation with user-friendly messages
• Performance: Model list cached to reduce API calls