duto

Put a local service on the internet at a stable HTTPS URL, with one command:

duto 3000 --name web     # https://web-<user>.duto.page → localhost:3000

The URL stays the same from one session to the next, so you set it once as a webhook endpoint or an OAuth callback. Duto is free for now and invite only; create your account at duto.dev from an invite link.

Install

npm i -g @dutodev/cli

Needs Node 18 or later, on macOS, Linux or Windows.

Start

duto login                 # once per machine; opens your browser
duto 3000                  # https://<user>.duto.page
duto 3000 --name web       # https://web-<user>.duto.page, the same every time

Every tunnel of a project

Create duto.yml at the root of the project and run duto:

tunnels:
  web: 3000
  backend: 8000
  webhook: 4000

All tunnels open together, in one screen. Commit the file and everyone on the team gets their own addresses from it.

Commands

Docs

• Quickstart: install, log in and open your first tunnel.
• How it works: the path of a request from the internet to your port.
• Test webhooks: a fixed URL for Stripe or GitHub, and replay without resending.
• Test on your phone: open a local app on a real device with a QR code.
• OAuth and login callbacks: register one callback URL and keep it.
• Share your work: show a client or a teammate without deploying.
• Framework setup: let Vite, Next.js, Rails or Django answer on a tunnel.
• Use with AI agents: let Claude Code or Cursor read your requests and open tunnels.
• duto.yml: every option of the project file.
• Host and headers: change what your local service receives.
• Password protection: a password per person, with webhook senders let through.
• Inspect and replay: every request in the terminal and in the browser.
• Network security: what protects each hop.
• CLI reference: every command, option and environment variable.
• Limits and pricing: what Duto costs and where the limits are.
• Troubleshooting: common messages Duto shows, and what to do.