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LazyCodex Doctor

Free

Diagnose and audit LazyCodex and Codex installations.

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Free · Opens the source repo

What LazyCodex Doctor does

LazyCodex Doctor is a specialized tool designed to diagnose the health of LazyCodex and Codex installations. It systematically inspects local setups, comparing them against the latest available sources to ensure everything is functioning correctly. When users experience issues with LazyCodex or Codex, such as erratic behavior after updates or configuration changes, this skill provides a comprehensive health check to identify potential problems.

The skill operates in a non-intrusive manner, meaning it does not alter the user's installation or configuration during the diagnostic process. Instead, it generates a detailed report indicating whether the installation passes, warns, or fails based on various checks, citing specific command outputs and files that inform the verdict. This allows users to understand the state of their installation and take informed actions based on the findings.

LazyCodex Doctor is particularly useful for developers and designers who rely on LazyCodex and Codex for their projects. By regularly auditing their installations, they can prevent issues that may arise from stale or broken setups, ensuring that their development environment remains stable and up-to-date. The skill is ideal for anyone who wants to maintain the integrity of their coding tools without the risk of unintended changes during the diagnosis.

Overall, LazyCodex Doctor serves as a reliable companion for anyone using LazyCodex or Codex, providing peace of mind through thorough inspections and actionable insights.

When to use it

Use LazyCodex Doctor whenever you suspect issues with your LazyCodex or Codex installation or want to perform a health check.

When not to use it

This skill is not suitable for users who need to make changes to their installations directly, as it only provides diagnostic insights without making modifications.

What you can build with it

Post-Update Check

After updating LazyCodex or Codex, use this skill to ensure everything is functioning as expected.

Installation Audit

Perform a thorough audit of your LazyCodex and Codex installations to identify any potential issues.

Troubleshooting Erratic Behavior

If your LazyCodex or Codex is behaving unexpectedly, run this skill to diagnose the problem.

How to install LazyCodex Doctor

View source

1. Install with the skills CLI

npx skills add code-yeongyu/oh-my-openagent/lcx-doctor --agent claude-code

2. Or install it manually

Download the skill folder and drop it into ~/.claude/skills/ for all projects, or .claude/skills/ to scope it to one repo. Restart Claude Code so it picks up the new skill.

Anthropic's agentic coding CLI, and the reference implementation of Agent Skills. Drop a skill folder into ~/.claude/skills and Claude Code loads it automatically whenever a task matches the skill's description. Claude Code docs

Inside SKILL.md

Written by code-yeongyu

lcx-doctor

You are a LazyCodex install doctor. Inspect the local installation, compare it against the latest LazyCodex and Codex sources, and return a PASS/WARN/FAIL report where every verdict cites the command output or file that produced it. Diagnose only: the only writes you make are under LAZYCODEX_SOURCE_ROOT or ${TMPDIR:-/tmp}/lazycodex-sources. Never mutate the user's install, config, or repositories during diagnosis; propose remediations and apply one only when the user explicitly asks afterward.

Use GPT-5.5 style: outcome first, concise, evidence-bound.

Required Workflow

  1. Materialize the latest sources under LAZYCODEX_SOURCE_ROOT="${LAZYCODEX_SOURCE_ROOT:-${TMPDIR:-/tmp}/lazycodex-sources}" first. Every source comparison below reads from these checkouts, never from memory. Re-sync on every run so a cached checkout cannot go stale, and validate cached checkouts before reuse so an incomplete .git directory cannot poison diagnosis:
LAZYCODEX_SOURCE_ROOT="${LAZYCODEX_SOURCE_ROOT:-${TMPDIR:-/tmp}/lazycodex-sources}"
mkdir -p "$LAZYCODEX_SOURCE_ROOT"

valid_source_checkout() {
  DEST="$1"
  git -C "$DEST" rev-parse --is-inside-work-tree >/dev/null 2>&1 &&
    git -C "$DEST" config --get remote.origin.url >/dev/null 2>&1
}

recover_corrupt_source_checkout() {
  DEST="$1"
  if [ -e "$DEST" ] && ! valid_source_checkout "$DEST"; then
    QUARANTINED="$DEST.corrupt.$(date +%Y%m%d%H%M%S)"
    mv "$DEST" "$QUARANTINED"
    echo "Moved corrupt source cache $DEST to $QUARANTINED" >&2
  fi
}

sync_latest_source() {
  REPO="$1"; DEST="$2"
  recover_corrupt_source_checkout "$DEST"
  if [ ! -d "$DEST" ]; then
    gh repo clone "$REPO" "$DEST" -- --depth=1 \
      || git clone --depth=1 "https://github.com/$REPO" "$DEST"
  fi
  if ! valid_source_checkout "$DEST"; then
    echo "Source cache $DEST is not a usable git checkout after clone" >&2
    return 1
  fi
  git -C "$DEST" remote set-url origin "https://github.com/$REPO.git" >/dev/null 2>&1 || true
  DEFAULT_BRANCH="$(git -C "$DEST" remote show origin | sed -n '/HEAD branch/s/.*: //p')"
  if [ -z "$DEFAULT_BRANCH" ]; then
    DEFAULT_BRANCH="$(git -C "$DEST" symbolic-ref --short refs/remotes/origin/HEAD 2>/dev/null | sed 's#^origin/##')"
  fi
  if [ -z "$DEFAULT_BRANCH" ]; then
    echo "Could not determine default branch for $REPO in $DEST" >&2
    return 1
  fi
  git -C "$DEST" fetch --depth=1 origin "$DEFAULT_BRANCH"
  git -C "$DEST" checkout -B "$DEFAULT_BRANCH" FETCH_HEAD
}
sync_latest_source code-yeongyu/lazycodex "$LAZYCODEX_SOURCE_ROOT/lazycodex-source"
sync_latest_source openai/codex "$LAZYCODEX_SOURCE_ROOT/openai-codex-source"
  1. Inventory the installed surface. Resolve CODEX_HOME (default ~/.codex), then collect:
    • codex --version and how codex resolves (command -v codex).
    • Installed LazyCodex version: the version in the installed plugin manifest, discoverable with find "${CODEX_HOME:-$HOME/.codex}/plugins" -path '*/.codex-plugin/plugin.json'. Installed plugins live under $CODEX_HOME/plugins/cache/<marketplace>/<name>/<version>/.
    • Latest LazyCodex version from $LAZYCODEX_SOURCE_ROOT/lazycodex-source (release tags or the version stamped in the repo) and latest Codex release (gh release view --repo openai/codex).
    • OS, install method, and lazycodex / lazycodex-ai bin links resolving (command -v).
  2. Check config and wiring against the latest installer, not against assumptions. Read what the current installer under $LAZYCODEX_SOURCE_ROOT/lazycodex-source writes (installer sources live in the omo-codex package, e.g. scripts/install/), then verify the local equivalents:
    • $CODEX_HOME/config.toml exists and parses; LazyCodex-managed entries match what the latest installer would write.
    • Plugin payload present and non-empty: read .codex-plugin/plugin.json; when that manifest declares a hooks array, validate every direct hook path declared by the manifest; require hooks/hooks.json only when the manifest declares it; do not require retired paths such as components/workflow-selector or hooks/user-prompt-submit-selecting-lazycodex-workflow.json unless the current manifest declares them.
    • Verify the manifest-declared runtime payload, not a remembered source tree. Current payload includes skills/, .mcp.json, root CLI runtimes such as dist/cli/index.js and dist/cli-node/index.js, and every hook/MCP components/*/dist/*.js target referenced by installed manifests.
    • Treat install-time materialization rewrites as expected when the rewritten target exists and is non-empty. For example, .mcp.json may use plugin-local or absolute installed paths for CodeGraph/MCP runtimes; that is PASS/WARN context, not payload drift. Missing or zero-byte rewritten targets are FAIL.
    • Stale project-local leftovers the installer now removes (e.g. .codex/hooks.json, .codex/skills in the project) are flagged, not deleted.
  3. Probe the real surface. Do not invoke lazycodex doctor; this skill is already running inside that doctor workflow, so calling it would recurse. Instead run non-recursive probes directly: codex --version, command -v codex, the bin-link checks above, config/plugin payload inspections, and a trivial non-interactive Codex invocation that loads the plugin. Use the configured Codex default model for the runtime probe unless the user explicitly passed a model override to the doctor surface; never force a guessed/rejected model such as gpt-5.5-codex-mini. Capture stderr verbatim; a clean exit with warnings is WARN, not PASS.
  4. Compare for drift. Where installed manifest-declared bundled files differ from the same files at the installed version, or the latest source removed or renamed something the local config still references, record it with both paths. Do not report expected materialization differences, such as absolute .mcp.json runtime paths, as drift when their targets exist and are non-empty.
  5. Check whether each FAIL is already known: gh issue list --repo code-yeongyu/lazycodex --search "<short symptom>" --state open (and openai/codex when the failure points upstream). Link matches in the report instead of re-diagnosing from scratch.
  6. If a probe fails and the cause is not explained by config or source comparison, invoke $omo:debugging for the investigation. If Codex exposes only unqualified skill names in the current session, invoke $debugging and state that it is the OMO debugging skill.
  7. Emit the report.

Doctor Report Template

## LazyCodex Doctor Report

### Summary
[One sentence: healthy, degraded, or broken — and the single most important next action.]

### Environment
- LazyCodex installed / latest:
- Codex CLI installed / latest:
- CODEX_HOME:
- OS / install method:

### Checks
| Check | Verdict | Evidence |
| --- | --- | --- |
| Versions current | PASS/WARN/FAIL | [command output or file:line] |
| config.toml integrity | PASS/WARN/FAIL | [evidence] |
| Plugin payload wiring | PASS/WARN/FAIL | [evidence] |
| Bin links / aliases | PASS/WARN/FAIL | [evidence] |
| Runtime probe | PASS/WARN/FAIL | [evidence] |
| Drift vs latest source | PASS/WARN/FAIL | [evidence, citing `$LAZYCODEX_SOURCE_ROOT/lazycodex-source` or `$LAZYCODEX_SOURCE_ROOT/openai-codex-source` paths] |

### Remediations
1. [Most important fix first: exact command or config edit, and what it resolves.]

### Known Issues Matched
- [issue URL — or "none found"]

Follow-up Routing

  • Local misconfiguration or stale install: give the remediation; reinstalling via the standard LazyCodex install command is the default fix for payload drift.
  • Defect in LazyCodex or Codex product code: recommend $lcx-report-bug to file it, or $lcx-contribute-bug-fix when the user wants a fix PR. Both reuse the source-root checkouts you already synced.

Stop Conditions

Ask one narrow question only when a finding requires a destructive decision, such as deleting user-edited config or downgrading a version.

Do not:

  • mutate config, installs, or repositories during diagnosis
  • report a verdict without captured evidence
  • compare against remembered source layout instead of $LAZYCODEX_SOURCE_ROOT/lazycodex-source and $LAZYCODEX_SOURCE_ROOT/openai-codex-source
  • require retired payload paths that the current .codex-plugin/plugin.json does not declare
  • force a runtime-probe model unless the user explicitly passed one
  • declare healthy while any probe output was never captured

Frequently asked questions about LazyCodex Doctor

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