API
In mid-August 2007, Discogs data became publicly accessible via a RESTful, XML-based API and a license that allowed specially attributed use, but did not allow anyone to "alter, transform, or build upon" the data. The license has since been changed to a public domain one. Prior to the advent of this license and API, Discogs data was only accessible via the Discogs web site's HTML interface and was intended to be viewed only using web browsers. The HTML interface remains the only authorized way to modify Discogs data.
On June 7, 2011 version 2 of the API was released. Notable in this release was that a license key was no longer required, the default response was changed from Xml to Json, and the 5000 queries per day limit was removed (although a limit of 2000 image lookups per days was introduced)
On November 1, 2011 a major update to version 2 of the API was released. This new release dropped support for Xml, data is always returned in Json format, however the monthly data dumps of new data are only provided in Xml format.
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