Today, such information system development methods as Extreme Programming, Scrum, Dynamic Systems Development Method, Crystal family, Agile modeling, OpenUP and others are being positioned as proven alternatives to the more traditional plan-driven approaches. However, although there are a variety of agile methods to choose from, the formal methods for their partial adaptation and customization are lacking. The main aim of this paper is to present a metamodel of the framework for a partial agile method adaptation. The paper presents the process of metamodel construction from the concepts that are both direct and indirect solutions to the sub-problems of the partial agile method adaptation. The presented paper extends some of our earlier and more fragmented findings that have been described in our previous work.