{"message":"US MVP Backend API - GraphQL Only","version":"2.0.0","graphql":{"endpoint":"/graphql","playground":"/graphql","description":"All API operations available through GraphQL"},"endpoints":{"graphql":{"path":"/graphql","methods":["GET","POST"],"description":"Unified GraphQL endpoint with complete schema","auth":false},"health":{"path":"/health","methods":["GET"],"description":"System health check with database status","auth":false},"root":{"path":"/","methods":["GET"],"description":"API information and GraphQL endpoint","auth":false},"voice":{"path":"/voice","methods":["GET","POST","WS"],"description":"Voice service endpoints for real-time audio interactions","auth":true},"tools":{"path":"/api/tools","methods":["GET","POST"],"description":"VCC tool execution endpoints for WebRTC integration","auth":true},"user":{"path":"/api/user","methods":["GET","POST"],"description":"User preferences and profile endpoints","auth":true},"ai-tutor":{"path":"/api/ai-tutor","methods":["GET","POST"],"description":"AI Tutor context and stage management for WebRTC voice sessions","auth":true}},"environment":"production","timestamp":"2026-08-02T07:18:27.059Z"}