blender-materials

Blender material management skill.

For existing material metallic/roughness edits, load blender-shader-nodes and use set_principled_inputs with material_name and inputs: {"Metallic": 0.94, "Roughness": 0.28}. Use list_node_sockets to inspect the target node and its linked sockets first; a linked socket's default value does not replace its upstream shader. Material creation already accepts PBR values; do not recreate an existing material just to change its roughness.

MaterialX round-trip