This tool provides an API entry point for a running web service-based instance of the Morfeusz program, aimed for use by plwiktionary editors. Both aspects of Morfeusz are covered: morphological analysis and morphological disambiguation; see http://morfeusz.sgjp.pl/doc/about/en for details. Concraft-pl is used for morphosyntactic tagging and disambiguation, see http://zil.ipipan.waw.pl/Concraft.