Privacy Policy — Web Editor

Last updated: 21 September 2026

Summary

n'co studio Web Editor is a developer tool. It collects no personal data, sends no data to any remote server, and requires no account.

What the extension does

n'co studio Web Editor is a Chrome extension that overlays a visual editing interface on web pages running on your own machine (development servers at localhost or 127.0.0.1). It lets developers select page elements, adjust their visual properties, and send the resulting changes to Claude Code through an MCP server that also runs on their machine.

Data collection

None. The extension does not collect, store, or transmit any personal information, browsing history, page content, or usage analytics to anyone.

Network activity

All network communication stays on your machine:

The extension opens a WebSocket connection to ws://localhost on a port between 7890 and 7899. That is the @nco-studio/web-editor-mcp server you install and run yourself.
No data is sent to n'co studio, cloud services, analytics providers, or any other remote endpoint.
The extension runs only on http://localhost/*, http://127.0.0.1/*, and https://localhost/*. It does not run on public websites.

The local MCP server

The extension works with a companion server, @nco-studio/web-editor-mcp, which you run locally with npx. This server:

Runs entirely on your machine.
May read your project's configuration files (for example tailwind.config.ts or package.json) to find design tokens and components. This happens locally; no project data leaves your machine.
Does not connect to any remote service.

Permissions

Permission	Why it's needed
`activeTab`	To read the current tab's address and page structure so you can select elements, and to capture the visible tab when you use the screenshot tool. Screenshots are saved to your machine only.
`storage`	To keep your queue of pending changes across page reloads, using session storage that Chrome clears when it closes.
`scripting`	To load the editing overlay into your local development page when you turn the extension on.
`localhost` / `127.0.0.1` access	To limit the extension to local development servers. It never runs on production or public websites.

Data sharing

No data is shared with any third party. The extension contains no analytics, advertising, or tracking.

Children's privacy

This extension is a tool for software developers. It is not directed at children and does not knowingly collect information from anyone, including minors.

Changes to this policy

If this policy changes in a material way, the updated version will be published on this page and the "Last updated" date above will change.

Contact

Questions about this policy: github.com/n-co-studio/web-editor or email [email protected].