this is a super simple example to authenticate with facebook with the help of sinatra and koala
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This is just a simple example for connecting to facebook with OAUTH2. With this you can do all the reading and writing stuff to facebook. See the Koala Docs for more.


  1. Clone the repository
  2. Run bundle inside the folder
  3. Change APP_ID, APP_SECRET (get this from facebook by registering an app)
  4. Add an URL like pointing to in your /etc/hosts file
  5. Add to your App Domains list on facebook
  6. Set a long and random string as cookie secret (Line: 12)
  7. Start your Server with $ shotgun
  8. point your browser to and click login


At this point you can make calls to the Facebook API (there are some examples in the comment):

From that on, its better to read the Koala documentation, use the Graph Explorer from Facebook and read the Facebook API Documentation to get an idea what you can do after the authentication.


Made with the help of this two awesome gems:



ben [at] nerdlabor [dot] de wrote this file. As long as you retain this notice you can do whatever you want with this stuff. If we meet some day, and you think this stuff is worth it, you can buy me a beer in return Benjamin Knofe