import Telnyx from 'telnyx';

const client = new Telnyx({
  apiKey: process.env['TELNYX_API_KEY'], // This is the default and can be omitted
});

const response = await client.messaging10dlc.campaign.osr.getAttributes('campaignId');

console.log(response);

{
  "msg_class": "E",
  "status": "7",
  "brandId": "00000000-0000-0000-0000-000000000000"
}