UPDATE: OMG so silly, I just need to remove completely the code from config.rb 
 Obviously I am trying to overcomplicate things.
I have dataset in .json:
{
  "resources":[
    {
      "name": "name1",
      "slug":"url-1",
      "published": false,
      "title":"Title 1"
    },
    {
      "name": "name2",
      "slug":"url-2",
      "published": false,
      "title":"Title 2"
    },
    {
      "name": "name3",
      "slug":"url-3",
      "published": false,
      "title":"Title 3"
    }
  ]
}
in my config I have:
data.resources.resources.each_with_index do |resource, index|
  if resource.name?
    proxy "/#{resource.slug}/index.html", "articles.html", :ignore => true
  else
  end
end
Now, I don’t want to actually create these pages, I only want to keep a reference of this dataset and maybe later loop over on the page, the slug URLs will point to actual articles (Middleman’s blog).
I tried replacing "articles.html" part in my config.rb with false but it didn’t work.
How can I achieve it?