title: Get page_access_token
body: <p>As I knew there is a way to get access token via <a href="https://developers.facebook.com/tools/explorer" rel="nofollow">https://developers.facebook.com/tools/explorer</a>. </p>
  
  <p>Is there other way to get page_access_token by API? </p>
  
  <p>I want to post request to add app to facebook page but it require a page_access_token as below:</p>
  
  <p><a href="https://graph.facebook.com/myPageId/tabs/?app_id=myAppId&amp;access_token=myPageAccessToken" rel="nofollow">https://graph.facebook.com/myPageId/tabs/?app_id=myAppId&amp;access_token=myPageAccessToken</a></p>
  
  <p>Thanks.</p>