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What you can do with Partmode

PartMode is an open-source, browser-based parametric 3D CAD application built on OpenCascade WebAssembly, with typed, permissioned agent access to the same document model.

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BOMWiki/partmode on GitHub

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Authorization notice. This tool is dual-use. Only use it on software, sites and systems you own or have explicit permission to test, and follow the relevant licenses and terms of service.

What do you want to do?

4 use cases

  • Model a parametric part in a local PartMode browser

    Run PartMode on your own machine and build a constrained, editable 3D part in the browser.

    View prompt
    In the BOMWiki/partmode repository, follow the local run steps in the README to start PartMode on http://127.0.0.1:4401, then report the URL that responds and the name of the template you opened. Verify that the server prints no build errors before reporting success.

  • Let an approved MCP agent revise an open CAD project

    Connect Codex to PartMode so the agent works on your open project after you approve it in the browser.

    View prompt
    Using the PartMode MCP server configured for this repository, call cad_capabilities, then inspect the open project at <project-name> and create a detached preview of the change <change-description>. Report the operations you proposed and the document revision they target, and verify that no commit happens until the person approves it in the browser.

  • Run unattended CAD edits on a durable headless project

    Create an explicit headless edit key so an agent can revise a server-stored project without a browser.

    View prompt
    Using the headless PartMode edit key in the secret environment, call cad_capabilities, apply the change <change-description> to the server project <project-name>, and export the result as STEP. Report the committed revision and the STEP artifact name, and verify that the revision number increased by one after the commit.

  • Ship a PartMode CAD fix that passes the contributor gate

    Run the focused gate and the affected smoke checks before submitting a behavior change.

    View prompt
    In the BOMWiki/partmode repository, make the change described in issue <issue-number> within its accepted boundary, run `npm run ci:gate`, and run the affected smoke checks listed in the issue. Report the gate result and the exact kernel or export evidence, and verify that the gate exits with status 0 before opening a pull request.

How to use Partmode

  1. Check you have what it needs: Node.js 22.13 or newer; git and npm available in a terminal; A PartMode account and a revocable agent key, only for hosted agent access.
  2. Open BOMWiki/partmode on GitHub and read the README and license.
  3. Run git clone https://github.com/BOMWiki/partmode.git and then cd partmode.
  4. Run npm ci, then npm run build.
  5. Run npm start.
  6. Open http://127.0.0.1:4401 in a browser and open an editable template.

These steps come from our top use case, Model a parametric part in a local PartMode browser, which also has a copy-paste agent prompt.

Partmode alternatives · Best AI repos for Work and operations

About this repo

  • Who it is forMechanical designers and engineers who want browser-based CAD with STEP export, and developers who want to let approved AI agents edit CAD projects.
  • Why it is hot
  • LanguageJavaScript
  • Sourcegithub.com/BOMWiki/partmode · Back to Hot repos

Requirements

  • Node.js 22.13 or newer
  • git and npm available in a terminal
  • A PartMode account and a revocable agent key, only for hosted agent access
  • Validation of dimensions, tolerances, and materials for any real manufacturing use
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Questions about Partmode

What is Partmode?

PartMode is an open-source, browser-based parametric 3D CAD application built on OpenCascade WebAssembly, with typed, permissioned agent access to the same document model. It is an open-source project on GitHub: https://github.com/BOMWiki/partmode.

Who is Partmode for?

Mechanical designers and engineers who want browser-based CAD with STEP export, and developers who want to let approved AI agents edit CAD projects.

What can I do with Partmode?

4 use cases so far, for example: Model a parametric part in a local PartMode browser; Let an approved MCP agent revise an open CAD project; Run unattended CAD edits on a durable headless project. Each has steps and a copy-paste agent prompt.

What do I need to run Partmode?

Node.js 22.13 or newer; git and npm available in a terminal; A PartMode account and a revocable agent key, only for hosted agent access; Validation of dimensions, tolerances, and materials for any real manufacturing use.

What are alternatives to Partmode?

Other hot AI repos in Work and operations: AI Job Search, Solidcraft, Fastbrowse, Awesome AI Agent Platforms, Nautilo.

Is Partmode safe to run?

Deduped does not own, audit or vouch for it. Read the README and license, run it on your own systems first and review every command before you run it.