This is an unofficial REST interface for Magic: The Gathering. The API can be used to return a maximum of 100 cards per call with names, blocks, and IDs. The preferred data format is JSON. HTTPS is used for authentication. Third-party applications are currently throttled to 5000 requests per hour.
Sixteen APIs have been added to the ProgrammableWeb directory in categories including Games, Digital Asset Management, and Marine. Featured today are APIs for programmatic access to energy data provided by the U.S. Department of Energy. Here's a rundown of the latest additions.