Not a long time that SkyDrive API is available. The scopes to access are here. But how to access documents on SkyDrive? What scope to use?
This blog post about Windows 8 and Skydrive contains some information about wl.skydrive for accessing and wl.skydrive_update for uploading data. Also the SkyPad application uses these, so it might be worth a try:
<live:SignInButton x:Name="signInBtn" Scopes="wl.signin wl.skydrive_update" Margin="0,0,0,0" />
来源：https://stackoverflow.com/questions/8108126/skydrive-api-accessing-documents