I believe WorldCat qualifies, although the API is not yet ready for general release (but soon):
<http://worldcat.org/devnet/index.php/SearchAPIDetails> Roy On 6/23/08 6/23/08 8:55 PM, "Godmar Back" <[EMAIL PROTECTED]> wrote: > Hi, > > are there any examples of functioning OpenSearch interfaces to library > catalogs or library information systems? > > I'm specifically interested in those that not only advertise a text/html > interface to their catalog, but who include OpenSearch response elements. > One example I've found is Evergreen; though it's not clear to what extent > this interface is used or implemented. For instance, their demo > installation's OpenSearch description advertises an ATOM feed, but what's > returned doesn't validate. (*) > > Are there other examples deployed (and does anybody know applications that > consume OpenSearch feeds?) > > - Godmar > > (*) See, for instance: > http://demo.gapines.org/opac/extras/opensearch/1.1/PINES/atom-full/keyword/?se > archTerms=music&startPage=&startIndex=&count=&searchLang > which is not a valid ATOM feed: > http://validator.w3.org/feed/check.cgi?url=http%3A%2F%2Fdemo.gapines.org%2Fopa > c%2Fextras%2Fopensearch%2F1.1%2FPINES%2Fatom-full%2Fkeyword%2F%3FsearchTerms%3 > Dmusic%26startPage%3D%26startIndex%3D%26count%3D%26searchLang > --