API Layer

API endpoints for discovery and validation are defined; next steps involve final integration. The API LAYER uses QuestionRouter for query routing in analysis endpoints. API LAYER is implemented using FastAPI framework for backend services. API Layer is implemented with FastAPI as the backend web framework. The API Layer contains the backend/app/api/analysis.py file. The backend/app/main.py file starts the FastAPI app that exposes the API Layer. FastAPI framework implements the API Layer.