curl --request POST \
  --url https://api.example.com/api/custom-apis \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "<string>",
  "description": "<string>",
  "url": "<string>",
  "method": "GET",
  "headers": {},
  "env": {},
  "is_active": true
}
'

{
  "id": 123,
  "user_id": 123,
  "name": "<string>",
  "description": "<string>",
  "url": "<string>",
  "method": "<string>",
  "headers": {},
  "env": {},
  "is_active": true,
  "is_default": true,
  "created_at": "<string>",
  "updated_at": "<string>"
}