Argos (argos.openaire.eu) is the online machine-actionable tool developed by OpenAIRE to facilitate Research Data Management (RDM) activities concerning the implementation of Data Management Plans (DMPs). It is an open, extensible and configurable tool which follows global standards including the DMP Common Standard of Research Data Alliance (RDA) for machine actionability. Argos uses OpenAIRE guides created by its RDM Task Force to familiarize users with basic RDM concepts and guide them throughout the process of describing their data. It also utilises the OpenAIRE pool of services and inferred sources to make DMPs more dynamic in use and easier to be completed, published and exploited in the Open Science ecosystem. Argos is based on the OpenDMP open source software, developed in collaboration with EUDAT CDI.