import Telnyx from 'telnyx';

const client = new Telnyx({
  apiKey: 'My API Key',
});

const response = await client.simCards.getActivationCode('6a09cdc3-8948-47f0-aa62-74ac943d6c58');

console.log(response.data);

{
  "data": {
    "record_type": "sim_card_activation_code",
    "activation_code": "LPA:1$...."
  }
}