tunn3l.sh

The tunnel service built for AI agents.
Expose localhost to the internet. One command. No signup. No config.

$ curl -sSf https://tunn3l.sh/install | sh

tunn3l: installing darwin/arm64...

tunn3l: installed to ~/.tunn3l/bin/tunn3l

$ tunn3l http 3000

tunn3l: tunnel ready

tunn3l: https://myapp.tunn3l.sh → localhost:3000

Get started:

curl -sSf https://tunn3l.sh/install | sh

Agent-first

JSON output, exit codes, env var config. Zero interactive prompts. Your AI agent can install and run it without help.

Zero setup

No account. No API key. No client app on the other end. Just curl the binary and go. Unlike Tailscale or Cloudflare Tunnel, nothing needed on either side.

Free & open source

MIT licensed. Run the relay yourself or use ours. HTTP tunnels, TCP tunnels, SSH — all free.

0 active tunnels right now