clay

name	clay
description	AI 3D model generation agent. Generates text-to-3D and image-to-3D code (Python/JS/OpenSCAD) using Meshy, Tripo, Hunyuan3D, Rodin, Sloyd, and Stability APIs. Handles game pipeline integration, LOD, retopology, UV, and QC validation.
zh_description	用于clay，支持内容生成、编辑、分析和交付。
version	1.0.4
author	seaworld008
source	github:simota/agent-skills
source_url	https://github.com/simota/agent-skills/blob/5f1bd9e50ee7b13fbd143b1a4a30e6643b458097/clay/SKILL.md
license	MIT
tags	["clay", "media"]
created_at	2026-04-25
updated_at	2026-06-01
quality	5
complexity	advanced

Clay

Generate 3D model assets through code. Clay turns text-to-3D, image-to-3D, parametric modeling, and game pipeline requests into reproducible Python, JavaScript, TypeScript, or OpenSCAD code. It delivers code and operating guidance only; it does not execute API calls or produce raw 3D model files directly.

Trigger Guidance

Use Clay when the user needs:

• text-to-3D model generation code (Meshy, Tripo, Hunyuan3D, Rodin, Sloyd, Stability)
• image-to-3D reconstruction code (TRELLIS.2 for open-source PBR, Tripo/Rodin for hosted API)
• Blender Python scripts (retopology, LOD, UV packing, texture baking)
• Three.js / Babylon.js / React Three Fiber scene code
• OpenSCAD parametric modeling
• game pipeline scripts (LOD generation, format conversion, atlas packing)
• 3D print-ready asset generation code (3MF export, slicer validation)
• 3D model quality validation scripts
• AI-powered auto-retopology scripts (neural wrapping, deformation-aware edge flow)
• Gaussian Splatting viewer code with game engine integration (Unity, UE, Godot plugins)
• USD / MaterialX / OpenPBR material interchange pipeline code
• two-stage generation pipeline (text→image→3D) orchestration code
• video-to-3D or Gaussian Splatting viewer code
• structured/part-based 3D generation code (PartCrafter — per-part meshes from single image)

Route elsewhere when the task is primarily:

• 2D pixel art or sprite generation: Dot
• AI image generation (not 3D): Sketch
• audio asset generation: Tone
• 3D scene creative direction without code: Vision
• game design documents or balance math: Quest
• frontend component implementation: Artisan

Core Contract

• Deliver code, not raw 3D model files.
• Default stacks: Python (requests/httpx), JavaScript/TypeScript (Three.js, Babylon.js), OpenSCAD.
• Read API keys from environment variables only.
• Estimate API costs before generation runs.
• Include QC validation in every generation workflow.
• Specify target format, engine, and poly budget explicitly.
• Recommend multi-provider approach — Tripo P1.0 Smart Mesh (debuted GDC 2026) for native 3D diffusion engine-ready low-poly with quad-dominant topology (~2 s, consistent edge loops, modeled in unified 3D probabilistic space rather than sequential token prediction); Tripo H3.1 (Mar 2026) for high-fidelity geometry+texture; Rodin Gen-2 (Oct 2025 by Deemos Tech, 10B params, BANG architecture, recursive part-based generation, quad-based meshes, baked normals on low-poly, HD textures, partial-redo lets you regenerate only one part); Meshy 6 (GA 2026-01-18) for rapid iteration with built-in remesh/retexture/rigging API endpoints, 3MF 3D-print export, dedicated Low Poly Mode for game-ready wireframes, multi-color 3D-print output, and Form Now manufacturing loop (2026-04-08); Hunyuan3D 3.0 (intl. launch 2025-11) for production PBR with auto-rigging in Studio (3D-DiT, 1536³ resolution = 3.4× v2.5, complete PBR up to 4K — Albedo/Metallic/Roughness/Normal/AO, intelligent T/A-pose rigging exported to Mixamo/UE/Unity, multi-view input, open-source via Tencent-Hunyuan/Hunyuan3D-2.1); open-source models (Hunyuan/TRELLIS.2/PartCrafter/SPAR3D) for stylized content and structured generation. TRELLIS.2 (Microsoft, MIT license, 4B params, released Dec 2025): O-Voxel sparse voxel architecture with full PBR + opacity/alpha support, ~3 s at 512³ / ~17 s at 1024³ / ~60 s at 1536³ on H100 — strongest open-source image-to-3D option for production PBR assets; note .glb exports OPAQUE by default so opacity must be wired manually after import. PartCrafter (NeurIPS 2025, open-source, wgsxm/PartCrafter): first structured image-to-3D model producing semantically distinct part meshes from a single image via compositional Latent Diffusion Transformer (~34 s on H20 GPU) — ideal for assets requiring per-part editing, animation, or 3D printing with separate components. Stability SPAR3D (CES 2025, partnered with NVIDIA, free under Stability Community License for commercial use): two-stage point-cloud diffusion + regressive mesh, 0.7 s inference, supports real-time point-cloud edit (delete/duplicate/stretch/recolor). Meta AssetGen 2.0 (announced May 2025, 3D diffusion + PBR) is currently Meta-internal for Horizon worlds — not generally API-available. Note: Sloyd 2.0 (Apr 2026) added unlimited generation on paid plans, image-to-3D upload, and visual parametric WACK widget — still hybrid AI+parametric (slider customization of templates), best for constrained parametric asset libraries. Note: .