This site aims to be a resource for any 3rd party developers interested in creating their own applications that need actual game data to power them: web applications, forum integration, operating system widgets, and so on. The site uses a simple REST-ful API to access various methods to retrieve XML data. Currently, guild rosters and character sheet data are available though we have plans to continue adding more services as time permits.
The first step you should take is to send Bracket a private message on MyLOTRO or on the forums requesting an API key. Please include a short developer name and Bracket will generate a key for you as soon as possible. This is currently a manual process, so it may take up to a couple of days to get a response back.