{"service":"HMI Control API","version":"2.0.0","description":"Industrial HMI Control System with GraphQL API and SQLModel","endpoints":{"graphql":"/graphql - GraphQL API endpoint & GraphiQL interface","websocket_hmi":"/ws/hmi/{device_id} - HMI device WebSocket","websocket_client":"/ws/client/{client_id} - Client WebSocket","docs":"/docs - OpenAPI documentation","health":"/health - Health check","metrics":"/metrics - System metrics","db_health":"/api/db/health - Database health check"},"features":["Real-time device communication","GraphQL API with subscriptions","WebSocket-based messaging","Industrial control operations","System monitoring and alerts","Historical data analysis","Command queue management","SQLModel database integration","Connection pooling with health checks"],"rest_api_compatibility":{"devices":"/api/devices","device_status":"/api/hmi/{device_id}/status","sensor_data":"/api/hmi/{device_id}/sensor-data","send_command":"/api/hmi/{device_id}/command","command_status":"/api/commands/{command_id}","emergency_stop":"/api/emergency-stop/{device_id}"},"status":"operational","timestamp":"2026-04-10T01:24:13.306120"}