curl --request GET \
  --url https://{organization}.rescueconsole.com/api/fundraising/custom-fields \
  --header 'Authorization: Bearer <token>'

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

fetch('https://{organization}.rescueconsole.com/api/fundraising/custom-fields', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://{organization}.rescueconsole.com/api/fundraising/custom-fields"

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

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

print(response.text)

{
  "results": [
    {
      "id": "<string>",
      "entity_type": "donation",
      "field_key": "<string>",
      "field_label": "<string>",
      "field_type": "text",
      "options": [
        "<string>"
      ],
      "required": true,
      "sort_order": 123
    }
  ]
}

{
  "error": "house_trained must be 1, 0 or null (not assessed)"
}

{
  "error": "house_trained must be 1, 0 or null (not assessed)"
}

{
  "error": "house_trained must be 1, 0 or null (not assessed)"
}