Sync skills

update-skills.sh

#!/usr/bin/env bash
set -euo pipefail

source_dirs=(
  "/Users/someone/code/some-skills"
  "/Users/someone/code/sentry_skills"
  "/Users/someone/code/my-skills"
)

codex_dest="$HOME/.codex/skills/public"
claude_skills_dest="$HOME/.claude/skills"
codex_union="$(mktemp -d)"
claude_union="$(mktemp -d)"

color_reset=$'\033[0m'
color_dim=$'\033[2m'
color_bold=$'\033[1m'
color_cyan=$'\033[36m'
color_green=$'\033[32m'
color_yellow=$'\033[33m'
color_purple=$'\033[35m'

term_width=$(tput cols 2>/dev/null || echo 60)
box_width=$((term_width > 70 ? 60 : term_width - 10))

print_header() {
  local text="$1"
  local pad=$(( (box_width - ${#text} - 2) / 2 ))
  local pad_r=$(( box_width - ${#text} - 2 - pad ))
  printf "\n${color_cyan}${color_bold}"
  printf "╭%*s╮\n" "$box_width" "" | tr ' ' '─'
  printf "│%*s %s %*s│\n" "$pad" "" "$text" "$pad_r" ""
  printf "╰%*s╯\n" "$box_width" "" | tr ' ' '─'
  printf "${color_reset}"
}

log_section() {
  local icon="$1"
  local title="$2"
  printf "\n${color_purple}${color_bold}  %s  %s${color_reset}\n" "$icon" "$title"
  printf "${color_dim}  %*s${color_reset}\n" "${#title}" "" | tr ' ' '─'
}

log_step() {
  printf "     ${color_cyan}●${color_reset} %s" "$1"
}

log_ok() {
  printf "\r     ${color_green}✔${color_reset} %s\n" "$1"
}

trap 'rm -rf "$codex_union" "$claude_union"' EXIT

total_plugins=0

is_marketplace() {
  [[ -f "$1/.claude-plugin/marketplace.json" ]]
}

count_dirs() {
  local path="$1"
  find "$path" -mindepth 1 -maxdepth 1 -type d 2>/dev/null | wc -l | tr -d ' '
}

get_orphaned_dirs() {
  local source="$1"
  local dest="$2"
  local orphans=()

  if [[ ! -d "$dest" ]]; then
    return
  fi

  shopt -s nullglob
  for dest_dir in "$dest"/*/; do
    dir_name=$(basename "$dest_dir")
    if [[ ! -d "$source/$dir_name" ]]; then
      orphans+=("$dir_name")
    fi
  done
  shopt -u nullglob

  printf '%s\n' "${orphans[@]}"
}

prompt_deploy_mode() {
  local codex_orphans claude_orphans
  codex_orphans=$(get_orphaned_dirs "$codex_union" "$codex_dest")
  claude_orphans=$(get_orphaned_dirs "$claude_union" "$claude_skills_dest")

  if [[ -z "$codex_orphans" && -z "$claude_orphans" ]]; then
    deploy_mode="replace"
    return
  fi

  printf "\n${color_yellow}${color_bold}  ⚠  Existing skills detected${color_reset}\n"
  printf "${color_dim}     The following skills exist at the destination but not in sources:${color_reset}\n\n"

  if [[ -n "$codex_orphans" ]]; then
    printf "     ${color_bold}Codex:${color_reset}\n"
    while IFS= read -r orphan; do
      [[ -n "$orphan" ]] && printf "       ${color_dim}•${color_reset} %s\n" "$orphan"
    done <<< "$codex_orphans"
    echo
  fi

  if [[ -n "$claude_orphans" ]]; then
    printf "     ${color_bold}Claude:${color_reset}\n"
    while IFS= read -r orphan; do
      [[ -n "$orphan" ]] && printf "       ${color_dim}•${color_reset} %s\n" "$orphan"
    done <<< "$claude_orphans"
    echo
  fi

  printf "     ${color_cyan}[R]${color_reset} Replace all ${color_dim}(remove unlisted skills)${color_reset}\n"
  printf "     ${color_cyan}[M]${color_reset} Merge ${color_dim}(keep existing, add new)${color_reset}\n"
  printf "     ${color_cyan}[C]${color_reset} Cancel\n\n"

  while true; do
    printf "     Choice ${color_dim}[R/M/C]${color_reset}: "
    read -r choice
    case "${choice,,}" in
      r|replace)
        deploy_mode="replace"
        break
        ;;
      m|merge)
        deploy_mode="merge"
        break
        ;;
      c|cancel)
        printf "\n${color_yellow}  ✗  Cancelled${color_reset}\n\n"
        exit 0
        ;;
      *)
        printf "     ${color_yellow}Invalid choice. Please enter R, M, or C.${color_reset}\n"
        ;;
    esac
  done
}

sync_skill_dirs() {
  local skills_path="$1"
  local dest="$2"

  shopt -s nullglob
  local dirs=("$skills_path"/*/)
  shopt -u nullglob

  for dir in "${dirs[@]}"; do
    if [[ -f "${dir}SKILL.md" ]]; then
      rsync -a --exclude ".git" "${dir%/}" "$dest/"
    fi
  done
}

print_header "Skills Updater"

log_section "📥" "Fetching Updates"

required_tools=(git rsync jq claude)
missing_tools=()
for tool in "${required_tools[@]}"; do
  if ! command -v "$tool" >/dev/null 2>&1; then
    missing_tools+=("$tool")
  fi
done
if ((${#missing_tools[@]} > 0)); then
  printf "     ${color_yellow}⚠${color_reset}  Missing required tools: %s\n" "${missing_tools[*]}" >&2
  exit 1
fi

for source_dir in "${source_dirs[@]}"; do
  if [[ ! -d "$source_dir" ]]; then
    printf "     ${color_yellow}⚠${color_reset}  Missing: %s ${color_dim}(skipping)${color_reset}\n" "$source_dir" >&2
    continue
  fi

  repo_root="$(git -C "$source_dir" rev-parse --show-toplevel 2>/dev/null || true)"
  if [[ -z "$repo_root" || ! -d "$repo_root/.git" ]]; then
    printf "     ${color_yellow}⚠${color_reset}  No git repo: %s\n" "$source_dir" >&2
    exit 1
  fi

  repo_name=$(basename "$repo_root")
  log_step "$repo_name"

  output=$(git -C "$repo_root" pull --ff-only 2>&1)
  if [[ "$output" == *"Already up to date"* ]]; then
    printf "\r     ${color_green}✔${color_reset} %s ${color_dim}(up to date)${color_reset}\n" "$repo_name"
  else
    printf "\r     ${color_green}✔${color_reset} %s ${color_green}(updated)${color_reset}\n" "$repo_name"
  fi
done

log_section "📦" "Installing Skills"

for source_dir in "${source_dirs[@]}"; do
  dir_name=$(basename "$source_dir")

  if [[ ! -d "$source_dir" ]]; then
    printf "\n     ${color_yellow}⚠${color_reset}  Missing: %s ${color_dim}(skipping)${color_reset}\n" "$source_dir"
    continue
  fi

  if is_marketplace "$source_dir"; then
    printf "\n     ${color_cyan}▸${color_reset} ${color_bold}%s${color_reset} ${color_dim}(plugin source)${color_reset}\n" "$dir_name"

    while IFS= read -r plugin_name; do
      log_step "Installing $plugin_name"
      claude plugin install --plugin-dir="$source_dir" "$plugin_name" > /dev/null 2>&1
      log_ok "Plugin → Claude ${color_dim}($plugin_name)${color_reset}"
      total_plugins=$((total_plugins + 1))

      plugin_source=$(jq -r --arg name "$plugin_name" '.plugins[] | select(.name == $name) | .source' "$source_dir/.claude-plugin/marketplace.json")
      plugin_path="$source_dir/$plugin_source"

      if [[ -d "$plugin_path/skills" ]]; then
        skill_count=$(find "$plugin_path/skills" -mindepth 1 -maxdepth 1 -type d -exec test -f '{}/SKILL.md' \; -print 2>/dev/null | wc -l | tr -d ' ')
        sync_skill_dirs "$plugin_path/skills" "$codex_union"
        [[ "$skill_count" -gt 0 ]] && printf "     ${color_green}✔${color_reset} Skills → Codex ${color_dim}(%s)${color_reset}\n" "$skill_count"
      fi

      if [[ -d "$plugin_path/agents" ]]; then
        for agent_file in "$plugin_path/agents"/*.md; do
          [[ -f "$agent_file" ]] || continue
          agent_name=$(basename "$agent_file" .md)
          [[ "$agent_name" == "README" ]] && continue
          mkdir -p "$codex_union/$agent_name"
          sed -n '/^---$/,$p' "$agent_file" > "$codex_union/$agent_name/SKILL.md"
          printf "     ${color_green}✔${color_reset} Agent → Codex ${color_dim}(%s)${color_reset}\n" "$agent_name"
        done
      fi
    done < <(jq -r '.plugins[].name' "$source_dir/.claude-plugin/marketplace.json")
  else
    skill_count=$(find "$source_dir" -mindepth 1 -maxdepth 1 -type d -exec test -f '{}/SKILL.md' \; -print 2>/dev/null | wc -l | tr -d ' ')
    printf "\n     ${color_cyan}▸${color_reset} ${color_bold}%s${color_reset} ${color_dim}(%s skills)${color_reset}\n" "$dir_name" "$skill_count"
    sync_skill_dirs "$source_dir" "$codex_union"
    printf "     ${color_green}✔${color_reset} Skills → Codex\n"
    sync_skill_dirs "$source_dir" "$claude_union"
    printf "     ${color_green}✔${color_reset} Skills → Claude\n"
  fi
done

deploy_mode=""
prompt_deploy_mode

log_section "🚀" "Deploying"

deploy_to() {
  local src="$1" dest="$2" name="$3"
  local rsync_opts=(-a)
  [[ "$deploy_mode" == "replace" ]] && rsync_opts+=(--delete)
  mkdir -p "$dest"
  rsync "${rsync_opts[@]}" "$src/" "$dest/"
  printf "     ${color_green}✔${color_reset} %s: %s ${color_dim}(%s)${color_reset}\n" "$name" "$dest" "$deploy_mode"
}

deploy_to "$codex_union" "$codex_dest" "Codex"
deploy_to "$claude_union" "$claude_skills_dest" "Claude"

codex_count=$(count_dirs "$codex_union")
claude_count=$(count_dirs "$claude_union")

printf "\n${color_green}${color_bold}  ✓  All done!${color_reset}\n"
printf "${color_dim}     Codex:  %s skills │ Claude: %s skills, %s plugins${color_reset}\n\n" "$codex_count" "$claude_count" "$total_plugins"

Skills Updater
Keep Codex and Claude Code skills in sync with multiple sources. The script pulls your sources, builds clean unified skill sets, installs Claude plugins when needed, and makes plugin agents available to Codex as skills.

What it does
Pulls the latest changes from each configured source repo.
Builds a Codex-ready skill set and a Claude-ready skill set.
Installs Claude plugins directly instead of copying their skills into Claude.
Extracts plugin skills and agents, converts agents into Codex skills, and copies them into Codex.
Strategies
Union build: sources are merged into temporary “union” directories before deploying to Codex and Claude. This avoids partial updates.
Plugin-aware flow: plugin repos are treated differently from plain skill repos, so Claude stays plugin-first while Codex can still use plugin content.
Deploy modes: if destination skills don’t exist in sources, you can choose merge (keep extras) or replace (remove unlisted).
Configure your sources
Edit the source list at the top of the script:

source_dirs=(
"/path/to/your/skills-repo"
"/path/to/your/claude-plugin-repo"
)
Usage
./update_skills.sh