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.
npx skills add znlgis/opengis-skills --skill occtgit clone --depth 1 https://github.com/znlgis/opengis-skillsWrote 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.
[](https://agentmods.dev/skills/znlgis/opengis-skills/occt)<a href="https://agentmods.dev/skills/znlgis/opengis-skills/occt"><img src="https://agentmods.dev/badge/skills/znlgis/opengis-skills/occt/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.
<a href="https://agentmods.dev/skills/znlgis/opengis-skills/occt"><img src="https://agentmods.dev/badge/skills/znlgis/opengis-skills/occt.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
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 Privilege Escalation · line 43 Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00072 | $0.03001 |
| Opus 5 | $0.00036 | $0.01501 |
| Sonnet 5 | $0.00014 | $0.00600 |
| Haiku 4.5 | $0.00007 | $0.00300 |
Grade B, and why
occt scanned grade B with 1 finding 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 yesterday.
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.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
sudo apt install libocct-foundation-dev libocct-modeling-data-dev \ How it starts
The opening of the file, as written. The whole thing — 273 lines — stays where its author put it; the contents beside it link to each section on GitHub.
项目地址： https://github.com/Open-Cascade-SAS/OCCT
官网： https://dev.opencascade.org/
官方文档： https://dev.opencascade.org/doc/refman/html/
教程： https://dev.opencascade.org/doc/overview/html/
许可证： LGPL-2.1（带例外条款）
概述
OCCT 提供：
- 几何与拓扑：
gp_*几何基元、Geom_*解析曲线/曲面、TopoDS_Shape（Vertex/Edge/Wire/Face/Shell/Solid/Compound） - 建模算法：拉伸/旋转/扫掠/放样/圆角/倒角/抽壳/布尔（BOPAlgo）
- STEP / IGES / STL / OBJ / glTF / VRML / BREP 数据交换
- 显示：基于 OpenGL（OCAF + AIS 应用框架）
- 网格：BRepMesh / Triangulation
- OCAF：CAD 数据应用框架（属性、版本、引用）
- 跨语言绑定：OCC.js（WebAssembly）、PythonOCC、occt-rs
安装
# Linux
sudo apt install libocct-foundation-dev libocct-modeling-data-dev \
libocct-modeling-algorithms-dev libocct-data-exchange-dev \
libocct-visualization-dev occt-misc
# macOS
brew install opencascade
# Conda（含 PythonOCC）
conda install -c conda-forge pythonocc-core
# 源码：CMake 构建（OCCT 8.0.0 起要求 C++17、CMake ≥ 3.10；VTK 默认关闭，需 -DUSE_VTK=ON 开启）
版本提示： OCCT 8.0 起有重大变更：
Standard_Failure改为继承std::exception；Raise()/Throw()/Instance()静态助手被移除（改用throw关键字）；Standard_Mutex等退役，改用std::mutex/std::lock_guard。从 7.x 升级需留意这些破坏性变更。最新版本请参见 OCCT Releases。
核心命名空间
| 包 | 内容 |
|---|---|
gp_* |
数学几何基元（Pnt、Vec、Dir、Ax2、Trsf） |
Geom_* |
参数曲线/曲面 |
TopoDS_* |
拓扑（Vertex/Edge/Wire/Face/Shell/Solid/Compound） |
BRep* |
拓扑 + 几何接口（BRepBuilderAPI_、BRepPrimAPI_、BRepAlgoAPI_*） |
BOPAlgo_* |
高级布尔运算 |
STEPControl_* / IGESControl_* |
数据交换 |
AIS_* / V3d_* |
显示 |
TDocStd_* / TDF_* |
OCAF 数据框架 |
C++ 入门：构造立方体并布尔差集
#include <BRepPrimAPI_MakeBox.hxx>
#include <BRepPrimAPI_MakeCylinder.hxx>
#include <BRepAlgoAPI_Cut.hxx>
#include <BRepFilletAPI_MakeFillet.hxx>
#include <STEPControl_Writer.hxx>
#include <TopExp_Explorer.hxx>
#include <gp_Ax2.hxx>
TopoDS_Shape box = BRepPrimAPI_MakeBox(100, 60, 30).Shape();
gp_Ax2 ax(gp_Pnt(50,30,0), gp_Dir(0,0,1));
TopoDS_Shape cyl = BRepPrimAPI_MakeCylinder(ax, 10, 50).Shape();
TopoDS_Shape result = BRepAlgoAPI_Cut(box, cyl).Shape();
// 圆角
BRepFilletAPI_MakeFillet fil(result);
for (TopExp_Explorer ex(result, TopAbs_EDGE); ex.More(); ex.Next())
fil.Add(2.0, TopoDS::Edge(ex.Current()));
result = fil.Shape();
// STEP 导出
STEPControl_Writer w;
w.Transfer(result, STEPControl_AsIs);
w.Write("out.step");
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.
- 7d ago Changed 122afb1c5b41
- 11d ago First seen · 273 lines · 72 tokens per session scan B 6864c9fc6222
occt is a skill published in the GitHub repository znlgis/opengis-skills (60 stars, last pushed 2d ago), licensed MIT. It adds 72 tokens to every session and 3,001 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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