awv-informatik/smlibpy

选用指南

AI 根据 README 整理 · 2026/10/21 00:46:25

使用方式

通过 Python 库使用，支持命令行安装和导入；也提供 MCP 服务器供 AI 代理调用，以及 JavaScript/TypeScript 版本（smlibwasm）可在浏览器或 Node 中运行。

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to Python: to build exact parts from short scripts, to draw what it has built, and to prove the work in numbers. In four parts: the library, the renderer, the MCP server, the skill. MMXXVI."></picture> # smlibpy A Python library for 3D modeling on the [SMLib NURBS kernel](https://github.com/NVIDIA-Omniverse/usd-brep). The API follows the style of [build123d](https://github.com/gumyr/build123d)'s algebra mode and shares a few ideas with [CadQuery](https://github.com/cadquery/cadquery), but not its method chains: shapes are plain values, and every operation returns a new one.

It comes with an MCP server, so your agent can build parts too. And it runs in the browser: [smlibwasm](#in-javascript) is the same library for JavaScript and TypeScript, on the kernel compiled to WebAssembly. **[Website](https://smlibpy.classcad.ch)** · **[Documentation](https://smlibpy.classcad.ch/docs/)** · **[Getting started](https://smlibpy.classcad.ch/docs/getting-started)** · **[API reference](https://smlibpy.classcad.ch/docs/api)** · **[For agents](https://smlibpy.classcad.ch/docs/mcp)** · **[JavaScript](https://smlibpy.classcad.ch/docs/javascript)** ```python from smlibpy import *

smlibwasm (`@classcad/smlibwasm` on npm) is smlibpy for JavaScript and TypeScript: the same API on the same kernel, compiled to WebAssembly. It runs in the browser and in Node, without a server and without dependencies. ```bash npm install @classcad/smlibwasm ``` ```js import { Box, Cylinder, GridLocations, Z, toStep } from '@classcad/smlibwasm' let plate = Box(80, 60, 10) plate = plate.fillet(plate.edges().parallelTo(Z), 8) plate = plate.cut(GridLocations(60, 40, 2, 2).mul(Cylinder(4, 10))) const step = toStep(plate) // the STEP file as text ```

部署要求

Python 3.10 至 3.14，支持 Linux、macOS、Windows；仅依赖 numpy。从源码构建需要 CMake 和 C++17 编译器。

查看 README 依据

for every function. People who want parametric apps that rebuild from sketches and features are sent to the [ClassCAD](https://classcad.ai) MCP. - A Claude Code plugin, installed from this repository (see below) ## Install ```bash pip install smlibpy ``` There are wheels for Linux (x86_64, aarch64), macOS (arm64, x86_64) and Windows, for Python 3.10 to 3.14, with the kernel compiled in. They are 5 to 7 MB, and numpy is the only dependency. For agents, `pip install "smlibpy[mcp]"` adds the MCP server; see [AI agents](https://smlibpy.classcad.ch/docs/mcp).

To build from source you need CMake and a C++17 compiler (about a minute on a laptop): ```bash git clone --recursive https://github.com/awv-informatik/smlibpy cd smlibpy pip install . ``` ## For agents The MCP server lets Claude and other agents model with smlibpy. In Claude Code: ```bash claude plugin marketplace add awv-informatik/smlibpy claude plugin install smlibpy@smlibpy ``` Other hosts start `uvx --from "smlibpy[mcp]" smlibpy-mcp`; see [AI agents](https://smlibpy.classcad.ch/docs/mcp). The agent works in four steps:

已知限制

当前版本（0.3）尚未支持带产品结构的装配体和带尺寸的二维工程图。

查看 README 依据

- [Examples](https://smlibpy.classcad.ch/docs/examples) - [The kernel](https://smlibpy.classcad.ch/docs/kernel): how smlibpy uses SMLib, accuracy, limitations - [API reference](https://smlibpy.classcad.ch/docs/api) ## Status smlibpy is new (version 0.3). It covers solid and surface modeling, text, and reads and writes STEP, USD and DXF with the exact geometry; smlibwasm has all of it in JavaScript. Assemblies with product structure and dimensioned 2D drawings are not there yet. ## License smlibpy and smlibwasm are MIT licensed. They build and bundle the SMLib kernel from