Abstract Methodologies involves both process elements and product elements. The OPEN Process Framework (OPF) focusses largely on process elements in the context of object-oriented systems development. The Tropos metamodel, on the other hand, focusses on early requirements engineering support for agent-oriented development. In a project to extend the OPF to support agentoriented developments, we investigate the potential for amalgamation of these two methodological approaches and their metamodels, describing how the metamodel integration has been initiated.