ARTstor has announced that it has developed a new interface to the ARTstor Digital Library designed to facilitate content metasearching, the ARTstor XML Gateway. The ARTstor XML Gateway is based on the SRU protocol for querying databases and returning search results. There are 520 institutions now participating in ARTstor, many of which have implemented metasearch engines on their campuses. ARTstor has piloted the XML Gateway with Ex Libris' Metalib, WebFeat Prism, Serials Solutions' Central Search and CSA Illumina. The XML Gateway provides a standardized method for querying the ARTstor Digital Library and retrieving search results that can be utilized by these metasearch providers.