Hi Marius,
Sorry I forgot to mention, I used a hql query to find all the objects of a
specific class using this REST resource:
/wikis/{wikiName}/query?q={query}type=hql,xwql,lucene}[distinct={true,false}]~[order={asc,desc}][start=n][number=n][prettyNames={true,false}][className=className]
Which REST resources did you try? These
http://platform.xwiki.org/xwiki/bin/view/Features/XWikiRESTfulAPI#HObjectresources
work for me when I'm logged out:
/xwiki/rest/wikis/xwiki/spaces/Blog/pages/BlogIntroduction/objects