A terminal multiplexer for coding agents

Every coding agent.
One terminal.

Run Claude Code, Codex and OpenCode side by side, on your own subscriptions. See which one needs you. Answer it from anywhere. Close the terminal, and every session keeps running.

$curl -fsSL https://rakumux.com/install.sh | bash

How it installs →

Free and open source · macOS + Linux · no tmux or VPN needed

★pinned1 session

worktrees/auth⎇ feat/auth

◐waiting for you1 session

worktrees/flaky⎇ fix/flaky

●unread1 session

docs⎇ docs/pagination

⠋working1 session

worktrees/limits⎇ feat/limits

●running1 session

web⎇ main

○ready2 sessions

◷last hour1 session

web⎇ main

◷last day1 session

api⎇ main

❯ Move the session checks into middleware and add tests

● Update(src/middleware/auth.ts)

└ Updated src/middleware/auth.ts with 42 additions and 18 removals

● Bash(npm test -- auth)

└ ✓ 23 passed (1.8s)

● Moved the checks into a requireSession() middleware and added 23 tests. All of them pass.

❯ Also cover expired tokens. Here's the request that fails. ~/.rakumux/uploads/01M67PAB…/expired-token.png

● Read(~/.rakumux/uploads/01M67PAB…/expired-token.png)

└ Read image (178KB)

● The token's exp is checked after the session lookup, so an expired token reads as a missing session. Checking it first, then adding the test.

✢ Writing the expired-token test… (esc to interrupt)

❯

▸▸ accept edits on (shift+tab to cycle)

Click the demo to drive it with your keyboard.

Why Rakumux

A multiplexer for your agents.

Your agents, exactly as they are. Always working, always in reach.

claude · codex · opencode

Bring your own subscription

Your Claude Code, Codex and OpenCode plans, with every native feature. No extra model costs.

rakumux-ptyd

Your sessions stay open

They run in Rakumux's server, not your terminal. Close the window, drop SSH or shut the lid: the same session is waiting. Updates don't stop it. Reboots resume it.

≡ Feed

Never let an agent sit idle

Every finished turn lands in the Feed, right beside your sessions. Answer from any browser and it's typed straight in.

j · k · gg · G

Drive Rakumux with Vim keys

j/k to move, gg/G to the ends, / to filter. Group by status, folder or app, and the session waiting on you is always on top.

ssh

Built for remote

Optimised for remote coding: run it on a desktop or server and connect over SSH, even from your phone.

rakumux.com

Web and phone, no VPN

A pull model: your machines reach out to rakumux.com, so there's nothing to expose. No Tailscale needed, and a VPN is optional.

Agent feed

Reply from anywhere.

Every turn from every agent on every machine, in a Feed beside your sessions, in the terminal and on rakumux.com. Reply from your desktop or phone, and Rakumux types it in the moment the agent is ready. No VPN, no open ports.

Every session on every machine, live.
Send screenshots and files with your reply.
Message any session, even a brand-new one.
Off until you turn it on. Private sessions never leave your machine.

auth-refactor Claude Code · feat/auth

5m delivered

Move the session checks into middleware and add tests

Moved the checks into a requireSession() middleware and added 23 tests. All of them pass.

Also cover expired tokens. Here's the request that fails.

expired-token.png178 KB

on rakumux.com · Delivered

flaky-tests Codex · fix/flaky

9m done

Why do the queue tests fail on CI?

All three share a timer race in queue.spec.ts. Swapping flush() for vi.runAllTimersAsync() fixes it. Apply it and rerun the suite?

Two modes, one key

Switch modes like Vim.

Your agent runs as itself in a real terminal, its shortcuts, slash commands and screens intact. Like Vim, Rakumux is modal: in session mode every key goes to your agent, in Rakumux mode keys drive Rakumux.

Ctrl \ steps out, Enter or i goes back in. No prefix gymnastics.
The motions you know: j k, gg G, Ctrl-d Ctrl-u, { } and / to filter. ? lists the rest.

SESSION MODElike insert mode

Work in the session. Every key goes to your agent, even Esc.

RAKUMUX MODElike normal mode

Drive Rakumux. j/k to look around, / to filter, f for the Feed, i to go back in.

Agent-aware

Know who needs you.

Working, waiting for you, or done: Rakumux tracks every agent, so you answer the right one first.

Claude Code, Codex and OpenCode as they are, plus any other program.
Agents start their own sessions over MCP.
A local, token-protected API for your scripts.

# Give Claude Code the Rakumux tools
$ claude mcp add --scope user rakumux -- rakumux-mcp

# OpenCode 2.x: tool calls act as the session they run in
$ rakumux-mcp opencode-plugin --install

# Or script it yourself
$ rakumux new --name tests --detach -- npm test
$ rakumux ls
  NAME           STATUS   AGENT   GIT              ACTIVE
  auth-refactor  working  claude  feat/auth        2m
  flaky-tests    blocked  codex   fix/flaky-tests  9m
  tests          running  -       main             1m

Web app

Every session, in any browser.

Your sessions run on your own machines. Follow and answer them on rakumux.com from any browser, every machine side by side.

The Rakumux web app on rakumux.com: sessions from three machines grouped by status, a Claude Code session's chat with a reply and a screenshot sent from the browser, and the Feed on the right — Reply from the browser, screenshot and all. Rakumux types it in when the agent is ready.

Platforms

Everywhere you work.

macOS · LinuxAvailable

Terminal app

The full app, free and open source. Run it on your machine or over SSH.

Install →

rakumux.comAvailable

Web app

Every machine's sessions, their chats and the Feed, in any browser, desktop or mobile. Free with an account.

Open the web app →

iOS · AndroidComing soon

iPhone and Android

Native apps are on the way. Until then, the web app works on your phone.

Where to run it

Run it on a server. Your agents keep working.

Rakumux runs on your laptop, but agents stop when it sleeps. On a machine that's always on, they keep working while you're away, and you pick them up over SSH or from your phone.

ssh · mosh

Your own server

A desktop at home, a VPS or a cloud VM. Install Rakumux, SSH in, and leave your agents running.

Set it up →

fly.io

A Fly Machine

An always-on Linux machine on Fly.io, with your home folder on a volume. A Dockerfile and three commands.

Set it up →

sprites.dev

A Fly Sprite

A Linux VM on Fly.io that pauses when idle. Press N and Rakumux sets it up and runs your sessions on it.

Set it up →

Install

Free. Open source. Running in a minute.

The whole app is Apache-2.0 on GitHub. No account, no card. One command on macOS or Linux.

$curl -fsSL https://rakumux.com/install.sh | bash

Downloads the latest release from GitHub, verifies its checksum and installs to /usr/local. Another prefix: curl -fsSL https://rakumux.com/install.sh | PREFIX="$HOME/.local" bash. Read the script first if you like.

Read the source on GitHub

Then, in any folder

1
Open Rakumux.
$rakumux
2
Press n and start an agent: claude, codex or opencode.
3
Ctrl \ to step out, j k to look around, Enter to jump back.

Orchestrate your agents in one place.

$curl -fsSL https://rakumux.com/install.sh | bash

Every coding agent.One terminal.

A multiplexer for your agents.

Bring your own subscription

Your sessions stay open

Never let an agent sit idle

Drive Rakumux with Vim keys

Built for remote

Web and phone, no VPN

Reply from anywhere.

Switch modes like Vim.

Know who needs you.

Every session, in any browser.

Everywhere you work.

Terminal app

Web app

iPhone and Android

Run it on a server. Your agents keep working.

Your own server

A Fly Machine

A Fly Sprite

Free. Open source. Running in a minute.

Then, in any folder

Orchestrate your agents in one place.

Every coding agent.
One terminal.