SHERPA has released version 2.4 of the RoMEO Application Programmers' Interface (API).
Here's an excerpt from the announcement:
The new version uses a totally new algorithm and is faster than earlier 1.x versions. It also supplies data for the fields that were missing in earlier versions—paid open access, and compliance with research funders' mandates. . . .
If you are using an older version of the prototype, we strongly recommend that you upgrade your application to use V.2.4 as soon as possible, because we will be discontinuing the old versions at the end of 2009. Version 2.4 is largely compatible with earlier versions. The main things that may require attention are: the new URL, handling the extra fields, and handling changes to the parameter and copyright fields.