build123d-mcp: MCP server for build123d to improve AI cognition when creating 3D CAD models

by pzfreo · MCP Server · ★ 113

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

How to install build123d-mcp

pip install build123d-mcp

Taken from the project's README on GitHub.

Security audit verdict: SAFE · quality 71/100

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.

ai-toolsbuild123dcadmcpmcp-serverpython3

Quick Facts

Stars113
Forks14
LanguagePython
CategoryMCP Server
LicenseApache-2.0
Quality Score71/100
Open Issues60
Last Updated2026-10-15
Created2026-04-30
Platformsmcp, python
Est. Tokens~17k

About build123d-mcp

build123d-mcp An MCP (Model Context Protocol) server that exposes build123d CAD operations as tools, enabling AI assistants to build, inspect, and iterate on 3D geometry interactively. Why When using an AI to write build123d scripts, the AI writes blind — it cannot see the geometry it produces.

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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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