(16 April 2014) In May DOAJ we will be starting development of a metadata harvester and an API. The harvester will collect he PLoS metadata, doubling the DOAJ article count.
The API will allow publishers to bulk upload their own article metadata without having to manually upload an XML file. For mega-publishers such as Redalyc, SciELO, BMC and PLoS, this will ensure their journals are always up-to-date in DOAJ with the latest article content. It will also allow bulk applications by publishers of new journals. Secondly, the API will provide an interface into the DOAJ database that will allow custom queries of the data and advanced analysis.
These developments take serious funding so do consider becoming a Publisher Member, a Member or a Sponsor.
The announcement is here.