mgem_list.rb

require 'octokit'

MGEM_LIST_REPO = 'mruby/mgem-list'

client = Octokit::Client.new(access_token: '') # Note: Set access token

files = client.contents(MGEM_LIST_REPO)
puts "count of files: #{files.size}"

files.each do |f|
  next unless /\A.+\.gem\z/ =~ f.path

  content = client.contents(MGEM_LIST_REPO, path: f.path, accept: 'application/vnd.github.V3.raw')
  name = content[%r{^name: (.+)$}, 1]
  description = content[%r{^description: (.+)$}, 1]
  puts "#{name}: #{description}"
end