Claude Desktopを使うとClaude in ChromeとClaude Codeが正常に接続できなくなる問題について原因調査及び解消するスクリプトを作ってみた

Browser extension is not connected. Please ensure the Claude browser extension
is installed and running (https://claude.ai/chrome), and that you are logged
into claude.ai with the same account as Claude Code.

~/Library/Application Support/Google/Chrome/NativeMessagingHosts/

{
  "name": "com.anthropic.claude_browser_extension",
  "description": "Claude Browser Extension Native Host",
  "path": "/Applications/Claude.app/Contents/Helpers/chrome-native-host",
  "type": "stdio",
  "allowed_origins": [
    "chrome-extension://dihbgbndebgnbjfmelmegjepbnkhlgni/",
    "chrome-extension://fcoeoabgfenejglbffodgkkbkcdhcgfn/",
    "chrome-extension://dngcpimnedloihjnnfngkgjoidhnaolf/"
  ]
}

{
  "name": "com.anthropic.claude_code_browser_extension",
  "description": "Claude Code Browser Extension Native Host",
  "path": "/Users/<user>/.claude/chrome/chrome-native-host",
  "type": "stdio",
  "allowed_origins": [
    "chrome-extension://fcoeoabgfenejglbffodgkkbkcdhcgfn/"
  ]
}

const s = [
  { name: "com.anthropic.claude_browser_extension", label: "Desktop" },
  { name: "com.anthropic.claude_code_browser_extension", label: "Claude Code" }
];
for (const n of s) try { /* connectNative(n.name) */ }

# 設定ファイルを編集
vi ~/Library/Application\ Support/Google/Chrome/NativeMessagingHosts/com.anthropic.claude_browser_extension.json

{
  "name": "com.anthropic.claude_browser_extension",
  "description": "Claude Browser Extension Native Host",
  "path": "/Applications/Claude.app/Contents/Helpers/chrome-native-host",
  "type": "stdio",
  "allowed_origins": [
    "chrome-extension://dihbgbndebgnbjfmelmegjepbnkhlgni/",
    "chrome-extension://dngcpimnedloihjnnfngkgjoidhnaolf/"
  ]
}

#!/bin/bash
#
# Claude in Chrome 拡張の接続先を切り替えるスクリプト
# Claude Code ⇔ Claude Desktopの切り替え
#

EXTENSION_ID="fcoeoabgfenejglbffodgkkbkcdhcgfn"
DESKTOP_CONFIG="$HOME/Library/Application Support/Google/Chrome/NativeMessagingHosts/com.anthropic.claude_browser_extension.json"

# 現在の状態を判定
get_current_mode() {
  if [ ! -f "$DESKTOP_CONFIG" ]; then
    echo "unknown"
    return
  fi
  if grep -q "$EXTENSION_ID" "$DESKTOP_CONFIG" 2>/dev/null; then
    echo "desktop"
  else
    echo "cli"
  fi
}

# 状態表示
show_status() {
  local mode
  mode=$(get_current_mode)

  echo "=== Claude in Chrome 接続先 ==="
  case "$mode" in
    cli)     echo "現在: Claude Code CLI" ;;
    desktop) echo "現在: Claude Desktop App" ;;
    *)       echo "現在: 不明" ;;
  esac

  # プロセス状態
  local native_host
  native_host=$(ps aux 2>/dev/null | grep "chrome-native-host" | grep -v grep | head -1)
  if [ -n "$native_host" ]; then
    if echo "$native_host" | grep -q "Claude.app"; then
      echo "実行中のネイティブホスト: Claude Desktop App"
    else
      echo "実行中のネイティブホスト: Claude Code CLI"
    fi
  else
    echo "ネイティブホストプロセス: 未起動"
  fi
}

# CLI モードに切り替え
switch_to_cli() {
  if [ "$(get_current_mode)" = "cli" ]; then
    echo "既に Claude Code CLI モードです"
    return 0
  fi
  python3 -c "
import json
with open('$DESKTOP_CONFIG', 'r') as f:
    config = json.load(f)
origins = config.get('allowed_origins', [])
target = 'chrome-extension://$EXTENSION_ID/'
if target in origins:
    origins.remove(target)
    config['allowed_origins'] = origins
    with open('$DESKTOP_CONFIG', 'w') as f:
        json.dump(config, f, indent=2)
    print('Desktop 設定から拡張 ID を除外しました')
"
  echo "切り替え完了: Claude Code CLI"
  echo "※ Chrome を再起動し、Claude Code で /chrome を実行してください"
}

# Desktop モードに切り替え
switch_to_desktop() {
  if [ "$(get_current_mode)" = "desktop" ]; then
    echo "既に Claude Desktop App モードです"
    return 0
  fi
  python3 -c "
import json
with open('$DESKTOP_CONFIG', 'r') as f:
    config = json.load(f)
origins = config.get('allowed_origins', [])
target = 'chrome-extension://$EXTENSION_ID/'
if target not in origins:
    origins.append(target)
    config['allowed_origins'] = origins
    with open('$DESKTOP_CONFIG', 'w') as f:
        json.dump(config, f, indent=2)
    print('Desktop 設定に拡張 ID を追加しました')
"
  echo "切り替え完了: Claude Desktop App"
  echo "※ Chrome を再起動してください"
}

# メイン処理
case "${1:-}" in
  cli)     switch_to_cli ;;
  desktop) switch_to_desktop ;;
  "")
    show_status
    echo ""
    echo "使用方法:"
    echo "  $0 cli       Claude Code CLI に切り替え"
    echo "  $0 desktop   Claude Desktop App に切り替え"
    ;;
  *)
    echo "Error: 不明な引数 '$1'"
    echo "使用方法: $0 [cli|desktop]"
    exit 1
    ;;
esac

# 現在の接続先を確認
./switch-chrome-extension.sh

# Claude Codeに切り替え
./switch-chrome-extension.sh cli

# Claude Desktopに切り替え
./switch-chrome-extension.sh desktop

$ ./switch-chrome-extension.sh
=== Claude in Chrome 接続先 ===
現在: Claude Code CLI
実行中のネイティブホスト: Claude Code CLI

使用方法:
  ./switch-chrome-extension.sh cli       Claude Code CLI に切り替え
  ./switch-chrome-extension.sh desktop   Claude Desktop App に切り替え

# 残存プロセスの確認
ps aux | grep "chrome-native" | grep -v grep