Node Parameter Display is an add-on that exposes Geometry Node and Material Node parameters directly within Blender's 3D viewport. It adds new context menu options in both the Shader Editor and Geometry Node Editor, allowing users to quickly mark specific nodes to appear in the dedicated viewport panel or remove them as needed. The interface includes dynamic dropdown menus that automatically list available modifiers and materials for the active object. It supports mesh and curve objects and includes visibility toggles for managing the displayed parameters. Users can also access the panel via a shortcut-triggered popup for rapid adjustments without leaving the 3D view.