Hooks

Where it lives

• hooks/style-reminder.shGitHub ↗
  Read the script

  #!/bin/sh
  # style-reminder — a UserPromptSubmit hook that keeps custom output styles enforced.
  #
  # Claude Code injects a per-turn reminder ("<Name> output style is active.
  # Remember to follow the specific guidelines for this style.") ONLY for its
  # built-in styles (Proactive, Explanatory, Learning). Custom styles are placed
  # in the system prompt once and never reinforced, so their voice fades in long
  # sessions. This hook emits the exact same reminder line for whatever custom
  # style is active, closing that gap.
  #
  # Install: install.sh --enforce   (or copy this file and register it under
  # hooks.UserPromptSubmit in ~/.claude/settings.json)
  
  settings="${CLAUDE_DIR:-$HOME/.claude}/settings.json"
  [ -f "$settings" ] || exit 0
  
  if command -v python3 >/dev/null 2>&1; then
    style=$(python3 -c 'import json,sys
  try:
      print(json.load(open(sys.argv[1])).get("outputStyle") or "")
  except Exception:
      pass' "$settings")
  else
    style=$(sed -n 's/.*"outputStyle"[[:space:]]*:[[:space:]]*"\([^"]*\)".*/\1/p' "$settings" | head -1)
  fi
  
  # Built-ins already get this reminder from Claude Code itself.
  case "$style" in
    ""|default|Proactive|Explanatory|Learning) exit 0 ;;
  esac
  
  echo "$style output style is active. Remember to follow the specific guidelines for this style."
  

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.