manycode - multiplayer coding agents

you

$ cd my-project

$ manycode host

7KQ 2FM

same wifi: manycode join 7KQ2FM

direct: manycode join 7KQ2FM --host 192.168.1.4:42518

browser: https://ideal-times-sing.trycloudflare.com/#7KQ2FM

* friend connected

your friend, same wifi

$ manycode join 7KQ2FM

manycode: looking for the session on your network…

manycode: connected (lan). Ctrl-] to leave.

╭─ your claude session renders here, live

│ same screen. same prompt. both keyboards work.

╰─

how it works

01

host

manycode host wraps claude in a real pty and prints a code. you keep using claude exactly as before.

02

share the code

say it out loud. on the same wifi that is the whole setup: discovery is a udp broadcast carrying a hash of the code, never the code itself.

03

join

manycode join 7KQ2FM attaches read-write. no terminal handy? they open the browser link instead - same live session, from any device. Ctrl-] detaches without killing it.

the details

smallest terminal winsthe pty resizes to the smallest connected terminal, tmux-style, so everyone sees the same frame. joiners get 256KB of scrollback replayed plus a forced repaint.
tunnel anywherehosting opens a free cloudflare quick tunnel by default. cloudflared comes bundled, no account needed. friends on any network join through a random wss:// url that dies with your session. --no-tunnel keeps it lan-only.
native mac appdownload the DMG, drag manycode into Applications. a green terminal-native window - host or join, live terminal, invite code, room chat in a sidebar. it speaks the same protocol and drives the same CLI underneath. unsigned for now, so first launch is right-click → Open.
join from a browserevery session has a link like https://….trycloudflare.com/#7KQ2FM that opens a full live terminal in any browser - phone included. nothing to install, code prefilled, same screen and typing as the cli.
approve each joinermanycode host --approve holds every joiner - right code and all - until you click allow in a macos dialog. make it your default with manycode setup.
record the sessionmanycode host --record saves an asciinema .cast of everything everyone saw. replay it with asciinema play or upload it to asciinema.org.
menu bar codeon macos, hosting puts your live code and joiner count in the menu bar: copy join commands or the browser link, open the anywhere-tunnel, end the session, get a ping when friends come and go. the icon turns into a globe when the anywhere link is ready.
relay, if you'd rather self-hostrun manycode relay on any box you own. it is a dumb pipe that pairs rooms by code and forwards frames. set CCSHARE_RELAY once and host/join fall back to it automatically.
direct over tailscalemanycode join CODE --host 100.x.y.z:42518 connects straight through. no relay, no extra server.
read-only modemanycode host --read-only lets friends watch a session without touching it. good for demos and rubber-ducking.
not just claudemanycode host codex, manycode host opencode, manycode host kimi - it is a pty mirror, so every terminal agent works. claude is just the default.
30-second onboardingmanycode setup (auto on first host) asks your name, finds the agents you have installed, and saves your defaults to ~/.manycode/config.json. flags always override.
both directionsyou host and they join, or they host and you join. same command, either side.

security, plainly

the code is the only auth

anyone holding a live code can type into a real shell on the host's machine. share codes like you'd hand over your laptop, and only with people you trust. codes die when the session ends. lan traffic stays on your network; the default tunnel exposes your session behind a random unguessable url plus the code - use --no-tunnel to keep a session lan-only.