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cad-engineering

cad-engineering is a skill for Claude Code, Codex from Ngoctrong102/lucad. It costs 52 tokens per session (3,345 once invoked), scanned A, original, no licence file.

An end-to-end workflow for designing mechanical parts in CAD, computer-aided design software, through the lucad engine.

In plain words
What is it for?
Use it for natural-language-to-CAD tasks, including creating designs, validating them, iterating on them, and reviewing the results.
Why use it?
It provides a cycle of design, validation, iteration, and review while avoiding unsupported engineering limits.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

not rated 0repo 2mo ago A scan 52 tokens no licence

Good fit Use it for natural-language-to-CAD tasks, including creating designs, validating them, iterating on them, and reviewing the results.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ngoctrong102/lucad/cad-engineering
View source ↗ Ngoctrong102/lucad
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Ngoctrong102/lucad --skill cad-engineering
Clone the repo
git clone --depth 1 https://github.com/Ngoctrong102/lucad

Made for: Claude Code, Codex.

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-engineering

README.md
[![agentmods](https://agentmods.dev/badge/skills/ngoctrong102/lucad/cad-engineering/github.svg)](https://agentmods.dev/skills/ngoctrong102/lucad/cad-engineering)
Your own site
<a href="https://agentmods.dev/skills/ngoctrong102/lucad/cad-engineering"><img src="https://agentmods.dev/badge/skills/ngoctrong102/lucad/cad-engineering/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-engineering

Your own site · 80×15
<a href="https://agentmods.dev/skills/ngoctrong102/lucad/cad-engineering"><img src="https://agentmods.dev/badge/skills/ngoctrong102/lucad/cad-engineering.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 52 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,345 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.
Origin unknown 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 $0.00052 $0.03345
Opus 5.5 $0.00021 $0.01338
Sonnet 5.5 $0.00010 $0.00669
Haiku 4.5 $0.00005 $0.00334

Measured 2mo ago against content hash a0db28ce6413, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

cad-engineering 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 2mo 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-engineering/SKILL.md · 137 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2mo ago First seen · 137 lines · 52 tokens per session scan A a0db28ce6413

Subscribe to this mod's changes

cad-engineering is a skill published in the GitHub repository Ngoctrong102/lucad (0 stars, last pushed 2mo ago), with no licence file. It adds 52 tokens to every session and 3,345 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-31.

Design and UXHardware and IoT
Related

cad-engineering compared with skills from other repositories

cad-engineering next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
cad-engineeringNgoctrong102/lucadSkill02mo agononeA52Claude Code, Codex
solidworks-vibecadwzyn20051216/solidworks-automation-skillSkill1.8k3d agoMITA96Claude Code, Codex
bdf_font_converterespressif/esp-clawSkill2.4k6d agoApache-2.0A27Claude Code, Codex
fluidcad-assemblyFluid-CAD/FluidCADSkill693yesterdayMITA154Claude Code, Codex
gen-assemblypartcad/partcadSkill515yesterdayApache-2.0A111Claude Code
gen-partpartcad/partcadSkill515yesterdayApache-2.0A114Claude Code
gen-sketchpartcad/partcadSkill515yesterdayApache-2.0A201Claude Code