This article introduces the Csound Plugin Opcode Frame-work (CPOF), which aims to provide a simple lightweightC++ framework for the development of new unit genera-tors for Csound. The original interface for this type workis provided in the C language and it still provides the mostcomplete set of components to cover all possible require-ments. CPOF attempts to allow a simpler and more eco-nomical approach to creating plugin opcodes. The paperexplores the fundamental characteristics of the frameworkand how it is used in practice. The helper classes that areincluded in CPOF are presented with examples. Finally,we look at some uses in the Csound source codebase.