Rack-spyup by udzuraRack::SpyUp Spying request and json response Installation Add this line to your application's Gemfile: gem 'rack-spyup' And then execute: $ bundle Or install it yourself as: $ gem install rack-spyup Usage use Rack::SpyUp do |config| config.logger = Logger.new(STDOUT) end spyup command rack-spyup is shipped with spyup command. You can use usual config.ru with request and response spyed:
