Hooks

Where it lives

• hooks/check-style.shRunsGitHub ↗
  Read the script

  #!/usr/bin/env sh
  # PostToolUse hook: when a skill markdown file is written or edited, enforce the
  # house style (no em dashes, no emoji, valid SKILL.md frontmatter) at write time.
  # Only acts on files under a skills/ directory, so it never blocks ordinary work
  # in other repos. Exit 2 with feedback makes Claude fix the file. No node or jq.
  dir=$(dirname "$0")
  . "$dir/../scripts/skill-checks.sh"
  
  payload=$(cat)
  file=$(printf '%s' "$payload" | grep -o '"file_path"[[:space:]]*:[[:space:]]*"[^"]*"' | head -1 | sed 's/.*:[[:space:]]*"//; s/"$//')
  
  [ -n "$file" ] || exit 0
  is_skill_markdown "$file" || exit 0
  
  out=$(check_skill_file "$file")
  if [ -n "$out" ]; then
    echo "House-style violations in $file:" >&2
    printf '%s\n' "$out" | sed 's/^/  - /' >&2
    echo 'Fix these before continuing: no em dashes or emoji, and a SKILL.md needs a name matching its directory plus a "Use when" description under 500 chars.' >&2
    exit 2
  fi
  exit 0
  

Read the script before you install anything that runs on your machine. This is the one part of a plugin that acts without being asked.