Authentication for posting to personal account without creating an app


I’d like to create a system that will occasionally make automated posts to my own personal Twitter account. I do not want to go through the process of making a request to create an application because I don’t want the app to be discoverable or usable by anyone other than me, which means the description and website fields at would not apply. Is there a way to accomplish this? It appears to me that I cannot access my own account via the API because I would need to have an application that requests permission to post to my account. I don’t see a way to have my system post to my account via username and password authentication or by creating an OAuth token that I can give to this unregistered application.