qurl. link
Built with AI

How do I keep an app I built with Claude Code or Cursor private?

Keep it on your computer and publish it privately. Paste one prompt into Claude Code or Cursor: the agent installs qURL, publishes your app with no public URL, and invites the people you name by email, or lets people ask for access. Strangers have nothing to find. Keep your app’s own login for anything sensitive.

Your options

What “private” means, tool by tool.

qurl.link

qURL CLI or your AI

Where it runs
Your computer.
Who can reach it
People you invite or approve. Then the network it was opened from, for that visit.
To keep it private
The app gets no public address. Other devices on the visitor’s network can reach it during that visit.

Host

Vercel, Netlify

Where it runs
Their servers, after you deploy.
Who can reach it
Anyone with the URL, unless you turn on access protection.
To keep it private
Turn on access protection.

Quick tunnel

ngrok, Cloudflare

Where it runs
Your computer.
Who can reach it
Anyone with the URL.
To keep it private
Set up sign-in rules yourself.

Tailscale Serve

Tailscale client

Where it runs
Your computer.
Who can reach it
Authorized Tailscale users.
To keep it private
Each viewer needs a Tailscale account and client.

This is each tool’s quick way to share. Most of them have more settings you can turn on. With qURL, private is how the app is published.

With your agent

One prompt. Your agent does the setup.

Share it from Claude Code or Cursor

  1. Paste this into your agent.

    It works in Claude Code, Cursor, Windsurf, or any agent that can read a URL and run commands.

    Paste into your agent
    Read this skill and use qURL to share the app I'm running locally.
https://layerv.ai/skills/qurl/SKILL.md
  2. Tell it who gets in.

    Give it the email addresses of the people you want. It sends invitations only to recipients you authorize. They verify their email and save a passkey in their browser. Or let people ask for access and approve each one.

  3. Take it back when you’re done.

    Ask “Who has access? Remove Sam.” It checks the grants and removes the access you choose. qurl stop <id> takes the whole app offline.

Want your agent to reach for qURL every time? Save the skill in your project. For Cursor, save it under ~/.agents/skills/qurl/. Codex starts with network access off, so save the skill file for it first.

Claude Code example
mkdir -p .claude/skills/qurl
curl -fsSL https://layerv.ai/skills/qurl/SKILL.md -o .claude/skills/qurl/SKILL.md

Prefer the terminal? Three commands do the same.

When to move on

Your next step, when you get there.

  • Ready for anyone to use it?Deploy it
  • Has to stay up when your laptop is closed?Deploy it
  • Your team, your AI agents or your services need private access at work?Move up to LayerV
Related

More answers on qurl.link

In depth on layerv.ai

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