Yes, you need an org with API enabled permission.

To enable this permission, please follow either of the below 2 options:

1) Profiles:

Go to Setup -> Manage Users and click on Profiles -> Edit Administrative Permission -> Check the API Enable box -> Save

2) Permission sets:

Go to Setup ->Manage Users -> Permission Sets -> Select the permission set you're updating -> Go to the system and click System Permission -> Edit -> Check the API Enable box -> Save