Muster changelog

Muster 1.2.1: Installing and updating are smoother.

2026-10-13T00:00:00Z

Installing and updating are smoother.

An installer window that shows the way. Open the disk image and Muster sits next to your Applications folder, with an arrow between them.
Updates take over cleanly. Put a new Muster in place of the old one and open it: the old copy quits instead of staying in charge.
The disk image ejects itself. When Muster moves itself into Applications, it ejects the disk image it came from.
Nothing skipped. If you jump past a release, What's New shows its changes too.

Muster 1.2: Only the errors you can fix ask for you.

2026-10-13T00:00:00Z

Only the errors you can fix ask for you.

Usage limits wait their turn. A session stopped by a usage limit or a sign-out moves to Recent and shows when the limit resets. You get one notification per limit instead of one per session.
Errors say what happened. Connection lost, API error or a refused request, with the agent's own message when you hover.
Cancelled isn't an error. A turn you stop in Cursor now reads as done.
What's New. After an update, Muster shows what changed, once. It's also in the menu bar menu.

Muster 1.1: Lighter, with costs you can trust and a 30-day usage view.

2026-10-12T00:00:00Z

Lighter, with costs you can trust and a 30-day usage view.

Usage window. Choose Usage… in the menu bar menu to see 30 days of tokens and API-rate cost by day, model and project. It reads your transcripts only while the window is open.
Costs counted once. A resumed Claude session no longer bills the history it copies, and subagent usage counts toward the session that started it. Rows read "≈ $41 API" so nobody mistakes them for a bill.
Lighter. Muster reads only what changed. With ten busy agents it averages about 0.4% of one core and about 20 MB of memory.
Answered elsewhere, gone here. Answer a prompt in Claude's own dialog and Muster drops it right away.
This week. Settings counts the prompts you answered without switching and the jumps you made.
Safer hooks. Muster keeps your original settings file as settings.json.muster-original, leaves symlinks and permissions as they are, and redoes its edit if Claude writes the file at the same moment.

Codex users: in Settings, under "Answer prompts from Muster", turn Codex off and on once to pick up the shorter wait, then run /hooks in Codex to trust the updated hook.

Muster 1.0: Every agent, one glance: a native Mac menu bar app for your Claude, Codex and Cursor sessions.

2026-10-12T00:00:00Z

Every agent, one glance: a native Mac menu bar app for your Claude, Codex and Cursor sessions.

See who needs you. A glass alert at the top of the screen the moment an agent waits on you, plus a count in the menu bar.
Answer from anywhere. Allow a command, pick an answer or approve a plan with ⌥↩, from the alert, the switcher or the notification.
⌥Tab to any agent. Most urgent first. Let go or click to land in its window, or the terminal it runs in.
Find anything. ⌃⌥Space searches every session.
Know what it costs. Tokens and API-rate cost per session, priced per model and per message.
A tour you do, not read. The first run finds your agents and has you try the switcher for real.