Nokogiri::XML::Builder.new do |xml| xml.XRD(xmlns: 'http://docs.oasis-open.org/ns/xri/xrd-1.0') do xml.Subject @canonical_account_uri xml.Link(rel: 'http://schemas.google.com/g/2010#updates-from', type: 'application/atom+xml', href: atom_user_stream_url(id: @account.id)) xml.Link(rel: 'salmon', href: salmon_url(@account)) xml.Link(rel: 'magic-public-key', href: @magic_key) end end.to_xml