How to filter Facebook pages by CREATE_CONTENT permission?

I have the following Graph API call: me/accounts?fields=access_token,name,id,perms that I use to get the page tokens from the user.

Now I would like to filter this by perms="CREATE_CONTENT". How can I filter this Graph API call?

I'm using the C# Facebook.net SDK. Currently I use this code:

client.Post("me/accounts", new { fields = "access_token,name,id,perms" });