Fairlayer integration demos in different programming languages. They assume a working Fair node on 8002 port.
Note that there are no SDK packages for your own security, you're encouraged to copy-paste needed functionality.
JS
# npm i axios serve-static finalhandler
node app.js
# open http://127.0.0.1:3010
Ruby
# gem install sinatra
ruby app.rb
# open http://127.0.0.1:4567