http://archiveibwfnjismruw7g2pngpz3kuyod3wnun2sh7x3z35ticvpp2yd.onion/faq
More info can be found here Can I have an account to manage my bookmarks ? No.
But you can keep bookmarks to archived pages in one of the existing bookmark managers, like Delicious , Google Bookmarks , … Why does archive.is not obey robots.txt? Because it is not a free-walking crawler, it saves only one page acting as a direct agent of the human user.