houdini-materials

name	houdini-materials
description	Authoring skill - create and assign Houdini materials, including typed MaterialX PBR networks for Karma. Use when building lookdev/material workflows from color, roughness, metallic, normal, or displacement maps. Not for generic node graph edits.
license	MIT
compatibility	dcc-mcp-houdini 0.1+, Houdini 18.5+, dcc-mcp-core 0.19.45+
allowed-tools	Bash Read Write Edit
metadata	{"dcc-mcp":{"dcc":"houdini","layer":"domain","stage":"authoring","version":"1.0.0","tags":["houdini","materials","lookdev","shader","materialx","pbr","karma","displacement","assignment","authoring"],"search-hint":"create material, assign material, MaterialX PBR, Karma shader, texture maps, normal, displacement, lookdev","search-aliases":["create material","make shader","add material","assign material","set material","principled shader","materialx standard surface","pbr textures","karma material","normal map","displacement map","apply material to object"],"example-prompts":["Create a red principled shader and assign it to /obj/geo1","Build a Karma MaterialX PBR material from color, roughness, normal, and displacement textures","Validate that /mat/planet has its MaterialX PBR channels connected","Make a new material in /mat","Assign the clay material to the selected object"],"intent":"Create Houdini material/shader nodes and assign them to renderable nodes.","recall-context":{"app_type":"houdini","domain":"lookdev","workflow-stage":"authoring","task-category":"mutate"},"requires":[],"produces":["scene_node","material"],"preconditions":[{"type":"software","name":"houdini","version":">=18.5"}],"side-effects":{"creates":true,"modifies":true,"targets":["scene_node","material"]},"tools":"tools.yaml"}}

houdini-materials

Typed material authoring for Houdini scenes. Use create_material for material network nodes and assign_material for renderable OBJ/SOP nodes with a material path parameter. Use build_materialx_pbr for a complete MaterialX Builder with standard-surface, normal-map, and displacement outputs, then call validate_materialx_pbr before assignment or rendering.

build_materialx_pbr treats base color as color data and roughness, metallic, normal, and displacement as raw data by default. It removes the newly created subnet if any node or connection fails; it never replaces an existing material.