Blender MCP expert for scene inspection, Python scripting, GLTF export, and material/animation extraction. Activate when using Blender MCP tools, writing Blender Python scripts, exporting scenes to GLTF/GLB, debugging export issues, optimizing GLB files with gltf-transform, or using asset integrations (PolyHaven, Sketchfab, Hyper3D Rodin, Hunyuan3D). Covers export gotchas, material mapping, texture optimization, headless CLI patterns, and failure modes.