Description

C# library for using TFS REST API in your .NET applications. Current version supports: Note: some methods in the REST API are currently available only for Visual Studio Online.

More information about REST API details can be found here:
http://www.visualstudio.com/integrate/reference/reference-vso-overview-vsi

Don't forget to enable Alternate Credentials on your account before using REST APIs:
http://www.visualstudio.com/en-us/integrate/get-started/get-started-auth-introduction-vsi