brepjs: Exact B-Rep CAD in TypeScript, with a Claude Code plugin that lets agents write parts and check them

by andymai · MCP Server · ★ 137

Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h

How to install brepjs

npm install brepjs occt-wasm
/plugin marketplace add andymai/brepjs

Taken from the project's README on GitHub.

Security audit verdict: SAFE · quality 70/100

None of the 42 rules matched — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against 42 published rules built on the SlowMist agent-security taxonomy, refreshed every 8 hours.

The quality score combines nine heuristic checks of the repo and its README: completeness, clarity, specificity, examples, structure, agent readiness, step-by-step content, instruction quality and security notes. It rates how well the project explains itself to an agent, not the code.

3d-printingai-agentsbimboundary-representationbrepcadclaude-codecsggeometry-kernelifc

Quick Facts

Stars137
Forks13
LanguageTypeScript
CategoryMCP Server
LicenseApache-2.0
Quality Score70/100
Last Updated2026-11-03
Created2026-02-01
Platformsclaude-code, mcp, node
Est. Tokens~17k

About brepjs

brepjs CAD modeling for JavaScript. ▶ Try the live playground: write code, watch the solid render, and export STEP, all in your browser. Getting Started · Cheat Sheet · Docs Shapes are exact mathematical boundaries (not triangle meshes), so booleans are precise, measurements are real, and you can export to STEP. TypeScript types prove the geometry is valid at compile time.

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How this security grade is produced

Grades come from a rule-based scan built on the SlowMist agent-security taxonomy: 42 published rules, covering credential harvesting, data exfiltration, curl | sh installers and more. It is a first-layer scan, not a manual audit — we say so rather than overstate it.

The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.

Sources & who's responsible:

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