// Create an appointment
const response = await fetch(
  'https://api.glowclient.com/v1/appointments',
  {
    method: 'POST',
    headers: {
      'Authorization': 'Bearer YOUR_API_KEY',
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({
      patientId: 'pat_abc123',
      providerId: 'prov_xyz789',
      serviceId: 'svc_botox_full',
      startTime: '2024-12-15T10:00:00Z',
      duration: 30
    })
  }
);

// Response
{
  "id": "apt_def456",
  "status": "confirmed",
  "patient": { ... },
  "provider": { ... },
  "service": { ... }
}