This skill helps you check if cmux is working correctly. It runs a safe, read-only test. You can use it when hooks, notifications, session restore, settings, or browser automation stop working. It is also useful for a health check or a support-safe debug summary.
The skill runs a diagnostic script first. It checks if the cmux command is available and if it can reach the socket. It looks at settings, hook installation, and session restore files. It can also test notifications. The results help you understand what is broken without changing anything.
You only need to run a few commands. The skill tells you what each result means. If something is wrong, it suggests a narrow fix. After fixing, you can run the test again to confirm the change worked.
Global
mkdir -p ~/.claude/skills/cmux-diagnosticsProject
mkdir -p .claude/skills/cmux-diagnosticsSource Repository
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