By tslateman
cmux sidebar status, tool progress, and notifications for Claude Code sessions
A Claude Code plugin that updates the cmux sidebar with live session status, tool progress, and notifications.
| Event | Effect |
|---|---|
| Session starts | Initializes the cmux sidebar |
| You submit a prompt | Sidebar shows "Thinking" in blue; tool/progress indicators clear |
| Claude uses a tool | Sidebar shows the tool name with an emoji label; progress bar advances |
| Claude finishes | Sidebar shows "Done" in green; progress fills to 100%; sends a notification |
| Claude sends a notification | Forwards it to cmux |
The progress bar uses a logarithmic scale — grows fast on early tool calls, slows as they accumulate, and fills to 100% only when Claude finishes.
Scripts are no-ops outside a cmux workspace (detected via cmux identify) — safe to install globally.
curl -fsSL https://raw.githubusercontent.com/tslateman/cmux-claude-code/main/install.sh | bash
Or clone directly:
git clone https://github.com/tslateman/cmux-claude-code.git ~/.claude/plugins/cmux-claude-code
git -C ~/.claude/plugins/cmux-claude-code pull
Or run the install script again; it pulls if already installed.
Requires cmux with the CLI at /Applications/cmux.app/Contents/Resources/bin/cmux and jq for JSON parsing.
| Hook | Script | Trigger |
|---|---|---|
SessionStart | scripts/session-start.sh | Claude Code session opens |
UserPromptSubmit | scripts/thinking.sh | User submits a prompt |
PostToolUse | scripts/tool-status.sh | Claude finishes a tool call |
Stop | scripts/notify.sh | Claude stops generating |
Notification | scripts/notification.sh | Claude Code emits a notification |
MIT
Matches all tools
Hooks run on every tool call, not just specific ones
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