Install with the open skills CLI (global, non-interactive — available in every Claude Code session):
npx skills add Yeachan-Heo/oh-my-codex --skill "doctor" -g -a claude-code -yOr manually — copy the SKILL.md below into:
~/.claude/skills/doctor-yeachan-heo-2/SKILL.md---
name: doctor
description: Diagnose and fix oh-my-codex installation issues
---
# Doctor Skill
Note: All `~/.codex/...` paths in this guide respect `CODEX_HOME` when that environment variable is set.
## Canonical skill root
OMX installs skills to `${CODEX_HOME:-~/.codex}/skills/` — this is the path current Codex CLI natively loads as its skill root.
`~/.agents/skills/` is a **historical legacy path** from an older Codex CLI release, before Codex settled on `~/.codex` as its home directory. Current Codex CLI and OMX no longer write there.
**In a mixed OMX + plain Codex environment:**
- **Use**: `${CODEX_HOME:-~/.codex}/skills/` (user scope) or `.codex/skills/` (project scope)
- **Clean up if present**: `~/.agents/skills/` — if this still exists alongside the canonical root, Codex's Enable/Disable Skills UI will show duplicate entries for any skill present in both trees
- **Interop rule**: OMX writes only to the canonical path; archive or remove `~/.agents/skills/` once you have confirmed `${CODEX_HOME:-~/.codex}/skills/` is your active root
## Task: Run Installation Diagnostics
You are the OMX Doctor - diagnose and fix installation issues.
### Step 1: Check Plugin Version
Official Codex plugin caches are marketplace- and version-scoped, for example `${CODEX_HOME:-~/.codex}/plugins/cache/$MARKETPLACE_NAME/oh-my-codex/$VERSION/`. Local installs may use `local` as the version identifier.
```bash
# Get installed plugin cache versions across marketplaces.
# Cache shape: $PLUGIN_CACHE_ROOT/$MARKETPLACE_NAME/oh-my-codex/$PLUGIN_VERSION/
PLUGIN_CACHE_ROOT="${CODEX_HOME:-$HOME/.codex}/plugins/cache"
CACHE_ENTRIES=$(find "$PLUGIN_CACHE_ROOT" -path "*/oh-my-codex/*" -mindepth 3 -maxdepth 3 -type d 2>/dev/null)
if [[ -z "$CACHE_ENTRIES" ]]; then
echo "Installed plugin cache: none"
else
while IFS= read -r VERSION_DIR; do
MARKETPLACE_NAME=$(basename "$(dirname "$(dirname "$VERSION_DIR")")")
PLUGIN_VERSION=$(basename "$VERSION_DIR")
printf 'Installed plugin cache: marketplace=%s version=%s path=%s\n' "$MARKETPLACE_NAME" "$PLUGIN_VERSION" "$VERSION_DIR"
done <<< "$CACHE_ENTRIES"
fi
# Get latest from npm
LATEST=$(npm view oh-my-codex version 2>/dev/null)
echo "Latest npm: $LATEST"
```
**Diagnosis**:
- If no cache entry exists: INFO - plugin marketplace artifact not cached; this may be normal when OMX was installed only through npm/setup
- Compare each printed `PLUGIN_VERSION` with `LATEST`; if it differs and is not `local`: WARN - outdated plugin cache
- If one marketplace has multiple version directories: WARN - stale cache for that marketplace/plugin pair
- Remember: plugin install/discovery is not a replacement for `npm install -g oh-my-codex` plus `omx setup`; the packaged plugin carries plugin-scoped companion metadata for optional MCP compatibility servers and apps, with first-party MCP disabled by default, while native/runtime hooks and the rest of OMX runtime wiring stay setup-owned
### Step 2: Check Hook Configuration (config.toml + legacy settings.json)
Check `~/.codex/config.toml` first (current Codex config), then check legacy `~/.codex/settings.json` only if it exists.
Look for hook entries pointing to removed scripts like:
- `bash $HOME/.codex/hooks/keyword-detector.sh`
- `bash $HOME/.codex/hooks/persistent-mode.sh`
- `bash $HOME/.codex/hooks/session-start.sh`
**Diagnosis**:
- If found: CRITICAL - legacy hooks causing duplicates
### Step 3: Check for Legacy Bash Hook Scripts
```bash
ls -la ~/.codex/hooks/*.sh 2>/dev/null
```
**Diagnosis**:
- If `keyword-detector.sh`, `persistent-mode.sh`, `session-start.sh`, or `stop-continuation.sh` exist: WARN - legacy scripts (can cause confusion)
### Step 4: Check AGENTS.md
```bash
# Check if AGENTS.md exists
ls -la ~/.codex/AGENTS.md 2>/dev/null
# Check for OMX marker
grep -q "oh-my-codex Multi-Agent System" ~/.codex/AGENTS.md 2>/dev/null && echo "Has OMX config" || echo "Missing OMX config"
```
**Diagnosis**:
- If missing: CRITICAL - AGENTS.md not configured
- If missing OMX marker: WARN - outdated AGENTS.md
### Step 5: Check for Stale Plugin Cache
```bash
# List marketplace/version cache entries for this plugin
PLUGIN_CACHE_ROOT="${CODEX_HOME:-$HOME/.codex}/plugins/cache"
find "$PLUGIN_CACHE_ROOT" -path "*/oh-my-codex/*" -mindepth 3 -maxdepth 3 -type d 2>/dev/null \
| while IFS= read -r VERSION_DIR; do
MARKETPLACE_NAME=$(basename "$(dirname "$(dirname "$VERSION_DIR")")")
PLUGIN_VERSION=$(basename "$VERSION_DIR")
printf '%s\t%s\n' "$MARKETPLACE_NAME" "$PLUGIN_VERSION"
done
```
**Diagnosis**:
- If a single marketplace lists multiple versions: WARN - multiple cached versions for that marketplace/plugin pair (cleanup recommended)
### Step 6: Check for Legacy Curl-Installed Content
Check for legacy agents, commands, and historical legacy skill roots from older installs/migrations:
```bash
# Check for legacy agents directory
ls -la ~/.codex/agents/ 2>/dev/null
# Check for legacy commands directory
ls -la ~/.codex/commands/ 2>/dev/null
# Check canonical current skills directory
ls -la ${CODEX_HOME:-~/.codex}/skills/ 2>/dev/null
# Check historical legacy skill directory
ls -la ~/.agents/skills/ 2>/dev/null
```
**Diagnosis**:
- If `~/.codex/agents/` exists with oh-my-codex-related files: WARN - legacy generated agents or hand-installed role files. The Codex plugin can package reusable workflows plus plugin-scoped companion metadata for optional MCP/apps; legacy setup installs native agents, while plugin setup archives stale legacy native-agent files and keeps config/hooks current.
- If `~/.codex/commands/` exists with oh-my-codex-related files: WARN - legacy command files from older installs. Current OMX uses skills/workflows plus setup-managed native surfaces.
- If `${CODEX_HOME:-~/.codex}/skills/` exists with OMX skills: OK - canonical current user skill root
- If `~/.agents/skills/` exists: WARN - historical legacy skill root that can overlap with `${CODEX_HOME:-~/.codex}/skills/` and cause duplicate Enable/Disable Skills entries
Look for files like:
- `architect.md`, `researcher.md`, `explore.md`, `executor.md`, etc. in agents/
- `ultrawork.md`, `deepsearch.md`, etc. in commands/
- Any oh-my-codex-related `.md` files in skills/
---
## Report Format
After running all checks, output a report:
```
## OMX Doctor Report
### Summary
[HEALTHY / ISSUES FOUND]
### Checks
| Check | Status | Details |
|-------|--------|---------|
| Plugin Version | OK/WARN/CRITICAL | ... |
| Hook Config (config.toml / legacy settings.json) | OK/CRITICAL | ... |
| Legacy Scripts (~/.codex/hooks/) | OK/WARN | ... |
| AGENTS.md | OK/WARN/CRITICAL | ... |
| Plugin Cache | OK/WARN | ... |
| Legacy Agents (~/.codex/agents/) | OK/WARN | ... |
| Legacy Commands (~/.codex/commands/) | OK/WARN | ... |
| Skills (${CODEX_HOME:-~/.codex}/skills) | OK/WARN | ... |
| Legacy Skill Root (~/.agents/skills) | OK/WARN | ... |
### Issues Found
1. [Issue description]
2. [Issue description]
### Recommended Fixes
[List fixes based on issues]
```
---
## Auto-Fix (if user confirms)
If issues found, ask user: "Would you like me to fix these issues automatically?"
If yes, apply fixes:
### Fix: Legacy Hooks in legacy settings.json
If `~/.codex/settings.json` exists, remove the legacy `"hooks"` section (keep other settings intact).
### Fix: Legacy Bash Scripts
```bash
rm -f ~/.codex/hooks/keyword-detector.sh
rm -f ~/.codex/hooks/persistent-mode.sh
rm -f ~/.codex/hooks/session-start.sh
rm -f ~/.codex/hooks/stop-continuation.sh
```
### Fix: Outdated Plugin
```bash
# Global cache reset across all marketplaces for this plugin.
# If you only want one marketplace, set MARKETPLACE_NAME and remove just that subtree instead.
PLUGIN_CACHE_ROOT="${CODEX_HOME:-$HOME/.codex}/plugins/cache"
find "$PLUGIN_CACHE_ROOT" -path "*/oh-my-codex" -type d -prune -exec rm -rf {} +
echo "Plugin cache cleared across all marketplaces. Restart Codex CLI to fetch the latest marketplace entry."
```
### Fix: Stale Cache (multiple versions)
```bash
# Keep only the newest version inside the selected marketplace/plugin cache.
# Set MARKETPLACE_NAME to the exact marketplace printed in Step 1.
PLUGIN_CACHE_ROOT="${CODEX_HOME:-$HOME/.codex}/plugins/cache"
PLUGIN_CACHE_DIR="$PLUGIN_CACHE_ROOT/$MARKETPLACE_NAME/oh-my-codex"
KEEP_VERSION=$(for dir in "$PLUGIN_CACHE_DIR"/*; do [[ -d "$dir" ]] && basename "$dir"; done | sort -V | tail -1)
if [[ -n "$KEEP_VERSION" ]]; then
find "$PLUGIN_CACHE_DIR" -mindepth 1 -maxdepth 1 -type d ! -name "$KEEP_VERSION" -exec rm -rf {} +
fi
```
### Fix: Missing/Outdated AGENTS.md
Fetch latest from GitHub and write to `~/.codex/AGENTS.md`:
```
WebFetch(url: "https://raw.githubusercontent.com/Yeachan-Heo/oh-my-codex/main/docs/AGENTS.md", prompt: "Return the complete raw markdown content exactly as-is")
```
### Fix: Legacy Curl-Installed Content
Remove legacy agents/commands plus the historical `~/.agents/skills` tree if it overlaps with the canonical `${CODEX_HOME:-~/.codex}/skills` install:
```bash
# Backup first (optional - ask user)
# mv ~/.codex/agents ~/.codex/agents.bak
# mv ~/.codex/commands ~/.codex/commands.bak
# mv ~/.agents/skills ~/.agents/skills.bak
# Or remove directly
rm -rf ~/.codex/agents
rm -rf ~/.codex/commands
rm -rf ~/.agents/skills
```
**Note**: Only remove if these contain oh-my-codex-related files. If user has custom agents/commands/skills, warn them and ask before removing.
---
## Post-Fix
After applying fixes, inform user:
> Fixes applied. **Restart Codex CLI** for changes to take effect.
Use when facing 2+ independent tasks that can be worked on without shared state or sequential dependencies
Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes
Use when implementing any feature or bugfix, before writing implementation code