context-api-contracts

Frontend-backend API contracts, routes, clients, and type definitions. Handles API endpoint definitions, request/response types, route configuration, and cross-stack integration. Use when working with API endpoints, request/response types, route definitions, or frontend-backend integration, or when user mentions API design, adding endpoints, type mismatches, API contracts, REST endpoints, client integration, "404 Not Found" errors, "Type error" in API calls, or route configuration issues.