Upcut for Claude

The Claude plugin for Upcut, the browser-based CNC CAD/CAM app. It connects Claude to your Upcut workspaces so Claude can create and edit components while you watch them change in the Upcut editor.

[!NOTE] Not yet released. This marketplace doesn't list a plugin yet. The steps below work from the first release.

What the plugin contains

• A connection to Upcut's hosted MCP server. You sign in to Upcut to approve it, and you choose its workspaces and permissions in Upcut → Settings → Agents.
• The upcut-workspace skill, which teaches Claude how to work in Upcut.

It has no hooks and runs no code on your computer.

Install

Claude Code

claude plugin marketplace add upcut-ai/claude-plugins
claude plugin install upcut@upcut

Then run /mcp and sign in to Upcut when asked.

Claude apps (web, Desktop and Cowork)

In Claude's plugin settings, choose Add from a repository, enter upcut-ai/claude-plugins, and install upcut. Plugins in the Claude apps need a paid plan.

Organizations

On a Team or Enterprise plan, an owner can install Upcut for everyone:

1. Open Organization settings → Plugins, choose Add plugins, pick GitHub and enter upcut-ai/claude-plugins.
2. Set Upcut to Required to install it for every member with no option to remove it. Installed by default and Available for install leave the choice to members.

The organization's copy syncs when a release merges into this repository, and Update on the marketplace syncs it by hand. It reaches web chat, the Desktop app's chat and Cowork, but not Claude Code. Changes take effect in each member's next session.

Beta

Beta releases bring the next version early, for testing in Claude Code. Beta and stable are the same plugin, so install one or the other. If you have the stable plugin, uninstall it first:

claude plugin uninstall upcut@upcut
claude plugin marketplace add upcut-ai/claude-plugins#beta
claude plugin install upcut@upcut-beta

Beta versions are always pre-releases, such as 1.2.0-beta.1, so they never match a stable version. To return to stable, uninstall upcut@upcut-beta and install upcut@upcut.

Updates

Claude Code doesn't update third-party plugins automatically unless you turn it on. Run /plugin, open Marketplaces, choose upcut (or upcut-beta), and select Enable auto-update. Claude Code then checks for updates within ten minutes of each session starting. To update by hand:

claude plugin marketplace update upcut
claude plugin update upcut@upcut

For beta, use upcut-beta and upcut@upcut-beta instead.

Then start a new Claude Code session. /reload-plugins reloads the skill, but the connection to Upcut, which tells Upcut which version you run, reconnects only in a new session. In the Claude apps, update Upcut in the plugin settings and start a new chat.

When Upcut needs a newer plugin, Claude tells you and gives these steps. A withdrawn release can still read your components, but it can't change them until you update.

Uninstall

claude plugin uninstall upcut@upcut

Then disable the agent in Upcut → Settings → Agents.

About this repository

Each release channel is a branch. main is the stable upcut marketplace and beta is upcut-beta. internal carries a build for Upcut's own staging servers and isn't for customers.

Upcut's release pipeline generates everything under .claude-plugin/ and plugins/. Changes arrive only as reviewed pull requests from that pipeline, so outside pull requests aren't merged.

Every release is tagged <marketplace>/v<version>, such as upcut/v1.2.0, and tags never move. A bad release is replaced by a higher version, never by moving a channel back to an older one.

To report a security problem, see SECURITY.md.

License

MIT