Every agent, one bell
Claude Code, Codex, OpenCode, Copilot CLI, Pi.
The gap
They go quiet.
You park an agent in a pane and walk away. Twenty minutes later it's been waiting for nineteen of them — on a question, an error, a turn long since finished. You're paying for a ferrari, idling. Muxbell rings the second it stops.
How it works
One step to set up. Muxbell does the rest.
Install & link
Drop Muxbell in your menu bar; it hooks into your tmux sessions.
It watches every pane
Claude, Codex, Pi, whatever you run. No per-project config.
The bell rings
Turn done, input needed, or an error — a native notification plus a dashboard. Click to jump straight to that pane.
Features
Everything you need to never miss a turn.
Jump to the pane
Click a notification or the dashboard, tmux focuses the exact pane.
A dashboard that sorts itself
Every pane running an agent shows up here. Errors and waits float to the top, grouped by repo.
Native, quiet, fast
A menu-bar item, not an Electron tab. The icon turns red only when a pane needs you.
Keyboard-driven
Your hotkey (⌥Space by default) pops the dashboard. j/k to move, / to search, d to dismiss.
Yours forever
One-time purchase, free updates, works offline.
FAQ
Questions, answered.
Do I need tmux?
Yes — watching tmux panes is the whole trick.
Which agents work?
Claude Code, Codex, OpenCode, Copilot CLI, and Pi — anything that runs a turn in a tmux pane.
Is it a subscription?
No. Pay $14.99 once, it's yours. Updates are free.
Will I pay VAT or sales tax?
Prices are shown excluding tax. Any VAT, GST, or sales tax for your country is calculated and added at checkout by Polar, our merchant of record.
Does it phone home?
No telemetry. Licensing checks in occasionally; everything else is local.
Updates?
Built-in auto-update (Sparkle), always signed & notarized.
macOS version?
macOS 14 Sonoma or later. Apple Silicon & Intel.
Pricing
$14.99 once · no subscription · 14-day free trial
Excl. VAT / sales tax — added at checkout