Hi Jason, since you're covering Library APIs as well as external ones, have you seen the Prism 3 linked data API? It allows developers to pull catalogue data at search and item level as linked data. So for example one of our customers books on art as json: http://catalogue.library.manchester.ac.uk/items/2495904.json or a query for web standards as rss: http://catalogue.library.manchester.ac.uk/items.rss?query=web+standards People have used this for university portal integrations and iPhone apps, so it might be of interest to you... Matt Matt Machell Senior Developer, Prism 3 Capita Libraries Me: http://eclecticdreams.com Work: http://blogs.talis.com/prism