Official · CodexFreePublished on GitHub

bits-and-bolts

Browse, inspect, and pick reusable CAD parts with the Bits & Bolts plugin.

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openai/mcp-extensions

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SKILL.md319 B

SKILL.md (original)

Review the instructions the agent will receive before you install.

Bits & Bolts

Use the Parts Library to browse CAD models and the registered file viewer to inspect them. Call cad.pickFile only when the user explicitly asks to pick, choose, or select a CAD file.

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onboarding

Official · CodexFree

Set measurement units and grid preferences, then open the Parts Library when the user chooses Set up for Bits & Bolts or asks for onboarding.

The English summary is being prepared. Showing the original description.

openai/mcp-extensions1.1KUpdated Oct 10, 2026

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Install

Install with a command

npx skills add https://github.com/openai/mcp-extensions --skill bits-and-bolts

Paste it into your terminal and run it (requires Node.js). You can choose which agents to install it for, such as Claude Code or Codex.

Ask your agent

Please install the following Agent Skill.
https://github.com/openai/mcp-extensions/tree/main/plugins/bits-and-bolts/skills/bits-and-bolts

First review SKILL.md and the bundled files and confirm there is nothing suspicious (such as sending data externally or reading credentials). Then place it in ~/.claude/skills/bits-and-bolts/ for Claude Code, or ~/.agents/skills/bits-and-bolts/ for Codex.

Send this text to Claude Code or Codex as is. It checks the contents before installing.

View source on GitHub

Repository: openai/mcp-extensions
Stars: 1,092
Forks: 52
Category: Other
License: Apache-2.0
Original language: English
Last updated: Oct 10, 2026

A skill is a set of instructions and scripts for an agent. cccskills does not guarantee that skills are safe. Review the contents before you install.