curl --request GET \
  --url https://api.example.com/api/v1/templates/builtin-variables

import requests

url = "https://api.example.com/api/v1/templates/builtin-variables"

response = requests.get(url)

print(response.text)

const options = {method: 'GET'};

fetch('https://api.example.com/api/v1/templates/builtin-variables', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "variables": [
    {
      "name": "<string>",
      "description": "<string>",
      "example": "<string>"
    }
  ]
}

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>",
      "input": "<unknown>",
      "ctx": {}
    }
  ]
}