Setup

Requirements

• macOS 13 or newer
• Google Chrome
• Node.js 22.14 or newer
• Codex CLI or the Codex desktop app
• An Onshape account signed in through Chrome

Fastest Path

Tell Codex:

Install and configure Onshape CadScript from github.com/ricokahler/onshape-cadscript, connect it to my Onshape browser session, and create a new printable CAD project.

Or install manually:

codex plugin marketplace add ricokahler/onshape-cadscript --sparse .agents/plugins
codex plugin add onshape-cadscript@onshape-cadscript
npx -y onshape-cadscript@0.1.6 setup codex
npx -y onshape-cadscript@0.1.6 setup chrome

Continue with Codex setup and Chrome bridge setup.

The plugin needs no background service. People who prefer a persistent local MCP endpoint can also use the optional PM2 daemon.