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bits-and-bolts

v0.1.11

Browse, import, inspect, and pick reusable CAD parts in Codex.

Codex2 Skills1 MCP serverstdio

By OpenAI744 GitHub starsUpdated 2 weeks ago

Directory evidence

Runtimes
Codex
Parsed components
3 skill or MCP entries
Source updated
Oct 2, 2026
Manifest status
Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install bits-and-bolts for Codex

Installs for the current user
codex plugin marketplace add openai/mcp-extensions
codex plugin marketplace upgrade mcp-extensions-early-access
codex plugin add bits-and-bolts@mcp-extensions-early-access

Paste and run these commands in a terminal with Codex. They add and refresh the mcp-extensions-early-access catalog, then install this plugin.

Compatibility: the page URL and API slug “bits-and-bolts” remain stable.

  • Codex: bits-and-bolts@agent-plugin-marketplace → bits-and-bolts@mcp-extensions-early-access

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually
git clone https://github.com/openai/mcp-extensions

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The plugin root is plugins/bits-and-bolts/.

Plugin files

plugins/bits-and-bolts/
├── .codex-plugin/plugin.json
├── skills/bits-and-bolts/SKILL.md
├── skills/onboarding/SKILL.md
└── .mcp.json

Included Skills2

bits-and-boltsskills/bits-and-bolts/SKILL.md

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

onboardingskills/onboarding/SKILL.md

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

MCP servers1

bits-and-boltsstdio
command
node
args
./dist/server.js
cwd
.

Plugin manifests1

plugins/bits-and-bolts/.codex-plugin/plugin.json
{
  "name": "bits-and-bolts",
  "version": "0.1.11",
  "description": "Browse, import, inspect, and pick reusable CAD parts in Codex.",
  "author": {
    "name": "OpenAI"
  },
  "skills": "./skills/",
  "extensions": {
    "com.openai": {
      "onboardingSkill": "./skills/onboarding/SKILL.md"
    }
  },
  "mcpServers": "./.mcp.json",
  "interface": {
    "displayName": "Bits & Bolts",
    "shortDescription": "Browse, inspect, and pick CAD parts",
    "longDescription": "Import reusable CAD parts, inspect STL, 3MF, STEP, and STP files in an interactive Three.js viewer, reorient printable STL models, and explicitly pick a model from rendered previews.",
    "developerName": "OpenAI",
    "category": "Developer Tools",
    "capabilities": [
      "Interactive",
      "Read",
      "Write"
    ],
    "composerIcon": "./assets/icon.svg",
    "logo": "./assets/icon.svg",
    "defaultPrompt": [
      "@Bits & Bolts open the Parts Library."
    ],
    "logoDark": "./assets/icon-dark.svg"
  }
}

For maintainers

If you maintain this plugin, link to this source-backed listing from your README so users can review its manifest and indexed components.

[bits-and-bolts on Agent Plugins Marketplace](https://pluginsmp.com/plugins/bits-and-bolts)