curl --request POST \
  --url https://{your-subdomain}.neetoform.com/api/external/v2/custom_domains \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <x-api-key>' \
  --data '
{
  "hostname": "forms.example.com"
}
'

const options = {
  method: 'POST',
  headers: {'X-Api-Key': '<x-api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({hostname: 'forms.example.com'})
};

fetch('https://{your-subdomain}.neetoform.com/api/external/v2/custom_domains', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://{your-subdomain}.neetoform.com/api/external/v2/custom_domains"

payload = { "hostname": "forms.example.com" }
headers = {
    "X-Api-Key": "<x-api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

{
  "custom_domain": {
    "id": "5f1c2a9e-7b4d-4e3a-8c6f-1d2e3f4a5b6c",
    "hostname": "forms.example.com",
    "status": "pending",
    "status_reason": null,
    "created_at": "2023-11-07T05:31:56Z",
    "dns_target": "neetodeployapp.com",
    "dns_target_ip": "98.89.128.226"
  }
}

{
  "error": "param is missing or the value is empty: hostname"
}

{
  "error": "Couldn't add custom domain. Please try again",
  "key": "<string>",
  "hostname": "forms.example.com"
}