import { PeriskopeApi } from '@periskope/periskope-client';

const client = new PeriskopeApi({
  authToken: 'YOUR_API_KEY',
  phone: 'YOUR_PHONE_NUMBER', // e.g., '919876543210'
});

async function updateLabels() {
  const response = await client.contact.updateLabels({
    contact_ids: ['919537851844'],
    labels: 'Test, Demo'
  });

  console.log(response);
}

updateLabels();

{}