facebook login authentication


I assume that you already have the access token in hand. In such a case the simplest way to validate an access token is to issue the following request


Here replace @accesstoken with the access token you have. I will breakdown the url and will explain each.

We are issuing a graph api request here which will return the Facebook User Id of the owner of the access token as a JSON string. The keyword 'me' represents the currently logged in user or the owner of the access token. For this request access token is a mandatory parameter.

If the provided access token is not valid or expired Facebook will just return an error message of some sort.

For a valid access token the result will somehow look like this

   "id": "ID_VALUE"