cmux-diagnostics
Run end-user cmux diagnostics. Use when cmux hooks, notifications, session restore, settings, browser automation, socket access, CLI control, or agent resume behavior is not working, or when the user asks for a cmux health check, doctor report, or support-safe debug summary.
How do I install this agent skill?
npx skills add https://github.com/manaflow-ai/cmux --skill cmux-diagnosticsIs this agent skill safe to install?
- Gen Agent Trust Hubpass
This skill provides diagnostic utilities for the cmux environment. It safely collects system health information, checks CLI availability, and validates hook configurations while strictly avoiding the exposure of sensitive data like tokens or session contents.
- Socketpass
No alerts
- Snykpass
Risk: LOW · No issues
What does this agent skill do?
cmux Diagnostics
Collect and interpret support-safe cmux diagnostics for end users. Default to read-only checks. Never dump hook config files, session stores, prompt logs, tokens, or environment secrets.
Quick report
Run the bundled read-only script first, from whichever install path exists:
skills/cmux-diagnostics/scripts/cmux-diagnostics # cmux checkout
~/.agents/skills/cmux-diagnostics/scripts/cmux-diagnostics # installed skill
~/.codex/skills/cmux-diagnostics/scripts/cmux-diagnostics # Codex-only skills.sh install
Add --include-context only when workspace names, cwd paths, and current cmux identifiers are relevant to the reported issue.
What to check
- CLI and socket health:
command -v cmux,cmux ping,cmux capabilities --json. If socket commands fail, check whether the agent is running inside a cmux terminal and whether socket automation is enabled. - Settings health:
cmux-settings validateandcmux-settings get terminal.autoResumeAgentSessions(from~/.agents/skills/cmux-settings/scripts/, or~/.codex/skills/...for askills.shinstall). Whenterminal.autoResumeAgentSessionsis false, cmux restores panes but does not resume saved agent sessions. - Hook installation:
cmux hooks setup --agent codex,--agent opencode, or barecmux hooks setup(installs supported agents found on PATH, skips missing ones). Run install or uninstall commands only after the user agrees. - Session restore evidence:
ls -lh ~/.cmuxterm/*-hook-sessions.json 2>/dev/null. Missing stores usually mean the agent has not run inside cmux since hooks were installed, hooks are disabled, or the integration does not support resume capture. - Notification path:
cmux notify "cmux diagnostic test", only when the user is ready for a visible test notification.
Interpretation
cmuxnot found: the CLI is not installed or not on PATH for this shell.cmux pingfails: the app is closed, unreachable through the current socket path, or automation access is disabled.- No
CMUX_WORKSPACE_IDorCMUX_SURFACE_ID: the command is running outside a cmux terminal. Some hooks intentionally no-op there. - Hook config but no session store: run one supported agent inside cmux after installing hooks, then re-check.
- Session store but no agents on restore: check
terminal.autoResumeAgentSessionsand whether the saved executable still exists on PATH. - Settings validation fails: fix the config first. Invalid config makes later symptoms misleading.
Rules
- Stay read-only until the user asks to fix something.
- Never print raw hook files, session JSON, prompt logs, shell history, tokens, or API keys. Summarize file presence, size, modified time, and marker presence instead.
- Prefer a narrow fix such as
cmux hooks setup --agent codexover reinstalling every integration. - After a fix, rerun the diagnostic script and report the changed lines.
How can the creator link this skill?
Add the canonical catalog link to the repository README so users can inspect current installs and available audits. The publishing guide covers the complete discovery path.
<a href="https://skillzs.dev/skills/manaflow-ai/cmux/cmux-diagnostics">View cmux-diagnostics on skillZs</a>