{"name":"TG400 API Gateway","version":"2.0.0","mode":"Direct Network Access","device":"192.168.100.33:80","endpoints":{"POST /tg400/ussd":"Send USSD command","POST /tg400/ussd/multi":"Multi-stage USSD","POST /tg400/sms":"Send SMS","GET /tg400/status":"Check device status","GET /health":"Health check"},"authentication":"X-API-Key header required","device_status":{"reachable":false,"consecutive_failures":815,"last_check":"2026-06-05T15:01:31.880Z"}}