Hi, I did a quick search on using the API from outside of the development environment but could  not find anything

That is, I know the API is available if you build a VS solution and have access to the libraries in the Umbraco core

But if I have an app that wants to interact at a service level with the api from outside the sites domain then are there mechanisms in place like OAuth to get access to the API of any site given a username and password, say???

Thanks

Steve