{"success":true,"message":"ESP32 Sensor API","version":"1.0.0","endpoints":{"health":"/health","users":"/api/users","registers":"/api/registers","sensorData":"/api/registers/sensor-data"},"documentation":{"authentication":{"apiToken":"Required in x-api-token header for most endpoints","deviceToken":"Required in x-device-token header for sensor data submission","userToken":"Required in x-user-token header for user-specific operations"},"rateLimit":{"general":"100 requests per 15 minutes","sensorData":"1000 requests per 15 minutes"}}}