gem install klout-rb

Klout::Client.configure do |config|
  config.api_key = "<YOUR_API_KEY>"
end

Klout::Client.score("ladygaga", "davidguetta").map do |user|
  "#{user.twitter_screen_name}: #{user.kscore}"
end

Klout::Client.score("ladygaga", "davidguetta").map do |user|
  "#{user.twitter_screen_name}: #{user.score.true_reach}"
end

Klout::Client.topics("ladygaga", "davidguetta").map do |user|
  "#{user.twitter_screen_name}: #{user.topics.join(',')}"
end

Klout::Client.influenced_by("ladygaga", "davidguetta").map do |user|
  "#{user.twitter_screen_name}: #{user.influencers.map { |i| i.twitter_screen_name }.join(',')}"
end

Klout::Client.influencer_of("ladygaga", "davidguetta").map do |user|
  "#{user.twitter_screen_name}: #{user.influencees.map { |i| i.twitter_screen_name }.join(',')}"
end