Wikimedia Bugzilla is closed!

Could some way to do the equivalent of [[Special:ExpandTemplates]]' "Show XML parse tree" be added via the API? It would be useful for writing user scripts which need the ability to parse the template structure of wikitext (for instance, to write a script that matches all the {{}} and {{{}}} bracketing in a user-friendly way). I basically would like some simple way to get at that information without screen-scraping.