use System.Reflection assembly has AssemblyVersion('1.2.3.4') has AssemblyDescription('foo bar') class Test def main is shared ass = Assembly.getExecutingAssembly assert ass.getName.version.toString == '1.2.3.4' description = '' for attr in ass.getCustomAttributes(true) # print attr if attr inherits AssemblyDescriptionAttribute description = attr.description to ! assert description == 'foo bar'