'suppress' is listed as a potential letype
for
http://en.wikipedia.org/w/api.php .
Although interestingly (or not) there is no 'suppress' log option at
http://en.wikipedia.org/wiki/Special:Log, and then again
http://en.wikipedia.org/wiki/Special:Log/suppress does give some
results, although it's not obvious what they are.
Also, it seems like api.php can figure out what the list of available
letype values are for each particular wiki, as I went to a different
wiki site's api,php and it correctly listed a different set of
possible values. Is that list accessible via an API call? It seems
like something that would fit under "siteinfo".
thanks,
Brianna
Suppression log is part of the experimental rev_deleted feature, which is not
yet enabled in Wikimedia sites. It is a private log for revision deletions
hidden from the public and from the regular sysops.