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.usecase.getCost({ usecase: 'usecase' });

console.log(response.campaignUsecase);

{
  "campaignUsecase": "<string>",
  "monthlyCost": "<string>",
  "upFrontCost": "<string>",
  "description": "<string>"
}