wordpress.org codebase
You can try out the api.wordpress.org. Take for example the secret MP6 plugin: http://api.wordpress.org/plugins/info/1.0/mp6.xml The current version is given by: <version type=”string”> <![CDATA[ 0.8 ]]> </version> and it looks like the previous versions are listed in the compatibility tag: <compatibility type=”array”> <array key=”3.4.1″> <array key=”1.0.0″> <integer>100</integer> <integer>1</integer> <integer>1</integer> </array> <array key=”1.0.1″> <integer>100</integer> <integer>1</integer> <integer>1</integer> </array> … Read more