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cmux-diagnostics

Diagnose cmux problems with read-only checks for command access, settings, hooks, notifications, and session restore. Interprets the results and prepares a support summary without exposing raw session data, prompt logs, tokens, or other secrets.

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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.

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适用场景

  • Investigating failed CLI or socket connections
  • Checking why saved agent sessions do not resume
  • Troubleshooting hooks and notifications
  • Preparing a diagnostic summary for support

包含的文件(3)

  • SKILL.md3.2 KB
  • agents/openai.yaml249 B
  • scripts/cmux-diagnostics5.9 KB

SKILL.md(原文)

安装前可以查看交给 AI 代理的指令内容。

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

  1. 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.
  2. Settings health: cmux-settings validate and cmux-settings get terminal.autoResumeAgentSessions (from ~/.agents/skills/cmux-settings/scripts/, or ~/.codex/skills/... for a skills.sh install). When terminal.autoResumeAgentSessions is false, cmux restores panes but does not resume saved agent sessions.
  3. Hook installation: cmux hooks setup --agent codex, --agent opencode, or bare cmux hooks setup (installs supported agents found on PATH, skips missing ones). Run install or uninstall commands only after the user agrees.
  4. 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.
  5. Notification path: cmux notify "cmux diagnostic test", only when the user is ready for a visible test notification.

Interpretation

  • cmux not found: the CLI is not installed or not on PATH for this shell.
  • cmux ping fails: the app is closed, unreachable through the current socket path, or automation access is disabled.
  • No CMUX_WORKSPACE_ID or CMUX_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.autoResumeAgentSessions and 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 codex over reinstalling every integration.
  • After a fix, rerun the diagnostic script and report the changed lines.

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