cad-mesh-3dgs

cad-mesh-3dgs is a skill for Claude Code from jaccen/Awesome-Gaussian-Skills. It costs 140 tokens per session (5,729 once invoked), scanned A, original, Apache-2.0.

A guide to moving between CAD models, polygon meshes, and 3D Gaussian Splatting, a way to render 3D scenes using many small 3D shapes. It also covers rebuilding structured CAD models from visual data.

In plain words
What is it for?
Use it to plan mesh-to-Gaussian or Gaussian-to-mesh conversions, extract surfaces, rebuild CAD parts from images, create materials, and connect geometry with physics simulations.
Why use it?
It helps when different 3D formats do not work together or when a rendered scene needs to become editable geometry. It provides a way to compare representations and investigate conversion problems.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

Needs its repository: it reads a path above its own folder, which exists only inside the repository. The line is **v1.7.0 upgrade**: This skill's conversion methods are now organized through the lens of SLAT (Structured LATent representation). See `../../references/slat-un.

Good fit Use it to plan mesh-to-Gaussian or Gaussian-to-mesh conversions, extract surfaces, rebuild CAD parts from images, create materials, and connect geometry with physics simulations.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/jaccen/Awesome-Gaussian-Skills
agentmods
npx agentmods add skills/jaccen/awesome-gaussian-skills/cad-mesh-3dgs

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for cad-mesh-3dgs

README.md
[![agentmods](https://agentmods.dev/badge/skills/jaccen/awesome-gaussian-skills/cad-mesh-3dgs/github.svg)](https://agentmods.dev/skills/jaccen/awesome-gaussian-skills/cad-mesh-3dgs)
Your own site
<a href="https://agentmods.dev/skills/jaccen/awesome-gaussian-skills/cad-mesh-3dgs"><img src="https://agentmods.dev/badge/skills/jaccen/awesome-gaussian-skills/cad-mesh-3dgs/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for cad-mesh-3dgs

Your own site · 80×15
<a href="https://agentmods.dev/skills/jaccen/awesome-gaussian-skills/cad-mesh-3dgs"><img src="https://agentmods.dev/badge/skills/jaccen/awesome-gaussian-skills/cad-mesh-3dgs.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 140 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,729 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium analysis-evasion · line 1
    Suspicious Unicode normalization or mixed-script content
    Fix: Review the flagged content for security risks. Ensure no credentials, secrets, or sensitive data are exposed.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00140 $0.05729
Opus 5 $0.00070 $0.02864
Sonnet 5 $0.00028 $0.01146
Haiku 4.5 $0.00014 $0.00573

Measured 13d ago against content hash 6d59d56b7daf, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

cad-mesh-3dgs scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 13d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/cad-mesh-3dgs/SKILL.md · 449 lines

How it starts

The opening of the file, as written. The whole thing — 449 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CAD & Mesh × 3DGS Bridge

You are a senior researcher at the intersection of CAD/CAM, geometric processing, and neural rendering (3DGS/NeRF). You have deep knowledge of how structured geometric representations (B-rep, mesh, point cloud) relate to and can be converted to/from 3D Gaussian Splatting representations. Help users navigate the mesh↔3DGS pipeline, design methods that combine CAD priors with 3DGS, and troubleshoot geometry-related issues in 3DGS reconstruction.

Capabilities

  • Analyze mesh↔3DGS conversion methods and recommend the right approach
  • Guide surface extraction from trained 3DGS models
  • Advise on CAD reverse engineering pipelines using 3DGS
  • Compare geometry quality across mesh, surfel, and Gaussian representations
  • Debug common issues in mesh-Gaussian hybrid methods
  • Evaluate B-rep / parametric reconstruction from images via 3DGS
  • Reason about conversions through the SLAT unified framework (encode-decode, not pairwise)

Section 0: SLAT — The Unified Conversion Framework

v1.7.0 upgrade: This skill's conversion methods are now organized through the lens of SLAT (Structured LATent representation). See ../../references/slat-unified-representation.md for the full theoretical framework.

Why SLAT Replaces Pairwise Conversion Tables

Previously, this skill treated each conversion (Mesh→3DGS, 3DGS→Mesh, 3DGS→CAD, etc.) as an isolated pairwise problem with its own pipeline. SLAT reframes all conversions through a shared encode-decode pattern:

Source Representation
       │
       ▼  ENCODE (lossy: captures what fits in sparse voxel grid)
┌──────────────────────┐
│   SLAT (Structured   │
│   LATent)            │
│                      │
│  Sparse voxel grid   │
│  Per-voxel features: │
│  - geometry          │
│  - appearance        │
│  - semantics         │
│  - deformation       │
└──────────────────────┘
       │
       ├── DECODE → 3D Gaussians (μ, Σ, α, SH)
       ├── DECODE → Mesh (vertices, faces)
       ├── DECODE → Radiance Field (MLP weights)
       └── DECODE → Parametric CAD (primitives, B-rep)

Read the full file on GitHub · 449 lines

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 13d ago First seen · 449 lines · 140 tokens per session scan A 6d59d56b7daf

Subscribe to this mod's changes

cad-mesh-3dgs is a skill published in the GitHub repository jaccen/Awesome-Gaussian-Skills (151 stars, last pushed 7d ago), licensed Apache-2.0. It adds 140 tokens to every session and 5,729 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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