# What is localhost:3000?

> Learn what localhost:3000 means, why a local link only works on your computer, and how to turn your project into a website others can open.

Your AI starts a development server and gives you `http://localhost:3000`. It opens in your browser, but sending that address to a friend will not share your project.

## What does localhost:3000 mean?

**localhost** points to the device you are using. The address `127.0.0.1` is its familiar IPv4 loopback address: your browser connects back to your own computer.

**3000** is a port number. It tells your computer which running app should receive the request. Development tools may use other ports, such as `5173` or `8080`.

On someone else's laptop, localhost points to their laptop. It does not lead back to yours.

## How do you share the website?

Publish the project with a host to get a public URL. For a static website, build and upload its HTML, CSS, JavaScript, and assets. A project that needs its own server or database also needs hosting for those parts.

Revdoku can publish your website files at a shareable `localhost3000.love` address.

To see published projects, **[browse the live Revdoku examples](/examples/)**.

Just ask to “publish to Revdoku” to
publish your HTML pages presentation dashboard app prototype game prototype
as a fast and secure website

from your Codex , Claude or another AI app publish files or folders

Connect
Skill
MCP

Paste this into your AI app.

Copy

Install the Revdoku skill in your AI app.

Copy
npx skills add revdoku/revdoku --skill revdoku -g

Choose your AI app to connect through MCP.

Codex CLI
Claude Code
Other

Copy codex mcp add revdoku --url https://app.revdoku.com/mcp
codex mcp login revdoku

Copy claude mcp add --transport http revdoku https://app.revdoku.com/mcp
claude mcp login revdoku

Transport Streamable HTTP Auth Browser OAuth

Copy https://app.revdoku.com/mcp

Open the MCP setup guide →

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