curl --request GET \
  --url http://127.0.0.1:3333/v3/custom-domains/check \
  --header 'Authorization: Bearer <token>'

import requests

url = "http://127.0.0.1:3333/v3/custom-domains/check"

headers = {"Authorization": "Bearer <token>"}

response = requests.get(url, headers=headers)

print(response.text)

const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

fetch('http://127.0.0.1:3333/v3/custom-domains/check', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

"<string>"

{
  "error": "<string>"
}

{
  "error": "<string>"
}