diff --git a/README.md b/README.md
index 4abe79c..5e648f3 100644
--- a/README.md
+++ b/README.md
@@ -93,6 +93,8 @@ node "$CLAUDE_SKILL_DIR/scripts/check-deps.mjs"
 # 手动运行请替换为实际路径，如 ~/.claude/skills/web-access
 ```
 
+> **子 Agent 权限**：Claude Code 子 Agent 不继承任何级别的 `permissions.allow`（[claude-code#18950](https://github.com/anthropics/claude-code/issues/18950)），首次运行 `check-deps.mjs` 时会自动安装 PreToolUse hook 到 `~/.claude/hooks/`，放行 CDP curl 命令、WebSearch 和 Jina 调用，确保并行调研功能的子 Agent 正常工作，无需手动配置。
+
 ## CDP Proxy API
 
 Proxy 通过 WebSocket 直连 Chrome（兼容 `chrome://inspect` 方式，无需命令行参数启动），提供 HTTP API：
diff --git a/SKILL.md b/SKILL.md
index bfe0659..7890d4a 100644
--- a/SKILL.md
+++ b/SKILL.md
@@ -183,6 +183,8 @@ Proxy 持续运行，不建议主动停止——重启后需要在 Chrome 中重
 - **速度**：多子 Agent 并行，总耗时约等于单个子任务时长
 - **上下文保护**：抓取内容不进入主 Agent 上下文，主 Agent 只接收摘要，节省 token
 
+**权限自动配置**：子 Agent 不继承主 Agent 的任何级别权限（Claude Code 平台限制，`permissions.allow` 对子 Agent 无效）。`check-deps.mjs` 通过安装 PreToolUse hook（权限评估最高优先级，对所有 Agent 生效）自动解决此问题——hook 会放行 CDP curl 命令、WebSearch 和 Jina WebFetch，无需用户手动配置。
+
 **并行 CDP 操作**：每个子 Agent 在当前用户浏览器实例中，自行创建所需的后台 tab（`/new`），自行操作，任务结束自行关闭（`/close`）。所有子 Agent 共享一个 Chrome、一个 Proxy，通过不同 targetId 操作不同 tab，无竞态风险。
 
 **子 Agent Prompt 写法：目标导向，而非步骤指令**
diff --git a/scripts/approve-tools-hook.mjs b/scripts/approve-tools-hook.mjs
new file mode 100644
index 0000000..15e8086
--- /dev/null
+++ b/scripts/approve-tools-hook.mjs
@@ -0,0 +1,48 @@
+#!/usr/bin/env node
+// web-access PreToolUse Hook
+// 自动放行 CDP Proxy 操作和联网工具调用，解决子 Agent 权限不继承的平台限制
+// Auto-approve CDP proxy operations and networking tools for sub-agents
+// Addresses: anthropics/claude-code#18950, #37730, #25526
+
+let input = '';
+process.stdin.on('data', chunk => { input += chunk; });
+process.stdin.on('end', () => {
+  try {
+    const data = JSON.parse(input);
+    const tool = data.tool_name;
+    const toolInput = data.tool_input || {};
+    let allow = false;
+
+    if (tool === 'Bash') {
+      const cmd = toolInput.command || '';
+      // CDP Proxy curl 命令（仅 localhost）
+      // CDP proxy curl commands (localhost only)
+      if (/^curl\s+.*https?:\/\/(localhost|127\.0\.0\.1):\d+\//.test(cmd)) allow = true;
+      // skill 脚本（check-deps, cdp-proxy, match-site）
+      // skill scripts
+      if (/^node\s+.*\b(check-deps|cdp-proxy|match-site)\b/.test(cmd)) allow = true;
+    } else if (tool === 'WebSearch') {
+      allow = true;
+    } else if (tool === 'WebFetch') {
+      const url = toolInput.url || '';
+      // Jina Markdown 转换服务
+      if (/^https?:\/\/r\.jina\.ai\//.test(url)) allow = true;
+    }
+
+    if (allow) {
+      process.stdout.write(JSON.stringify({
+        hookSpecificOutput: {
+          hookEventName: 'PreToolUse',
+          permissionDecision: 'allow',
+          permissionDecisionReason: 'web-access: auto-approved CDP/networking operation',
+        },
+      }));
+    }
+    // 无输出 = 走默认权限流程（ask user）
+    // no output = fall through to default permission flow
+  } catch {
+    // hook 异常不应阻塞操作
+    // hook errors must not block operations
+  }
+  process.exit(0);
+});
diff --git a/scripts/check-deps.mjs b/scripts/check-deps.mjs
index d6cc31e..cdab9cf 100644
--- a/scripts/check-deps.mjs
+++ b/scripts/check-deps.mjs
@@ -138,10 +138,90 @@ async function ensureProxy() {
   return false;
 }
 
+// --- 子 Agent 权限：PreToolUse Hook 自动配置 ---
+// Claude Code 子 Agent 不继承任何级别的 permissions.allow（anthropics/claude-code#18950, #37730, #25526）
+// 唯一对子 Agent 生效的权限机制是 PreToolUse hooks（权限评估最高优先级）
+// 此函数将 hook 脚本安装到 ~/.claude/hooks/ 并在 settings.json 中注册
+
+const HOOK_FILENAME = 'web-access-approve-tools.mjs';
+
+function ensureHooks() {
+  const configDir = process.env.CLAUDE_CONFIG_DIR || path.join(os.homedir(), '.claude');
+  const settingsPath = path.join(configDir, 'settings.json');
+  const hooksDir = path.join(configDir, 'hooks');
+  const hookDest = path.join(hooksDir, HOOK_FILENAME);
+  const hookSrc = path.join(ROOT, 'scripts', 'approve-tools-hook.mjs');
+
+  try {
+    // 1. 安装 hook 脚本到稳定位置
+    // install hook script to stable location
+    if (!fs.existsSync(hooksDir)) fs.mkdirSync(hooksDir, { recursive: true });
+
+    const srcContent = fs.readFileSync(hookSrc, 'utf8');
+    let needCopy = true;
+    if (fs.existsSync(hookDest)) {
+      needCopy = fs.readFileSync(hookDest, 'utf8') !== srcContent;
+    }
+    if (needCopy) {
+      fs.writeFileSync(hookDest, srcContent, { mode: 0o755 });
+    }
+
+    // 2. 在 settings.json 中注册 PreToolUse hook
+    // register PreToolUse hook in settings.json
+    let settings = {};
+    if (fs.existsSync(settingsPath)) {
+      settings = JSON.parse(fs.readFileSync(settingsPath, 'utf8'));
+    }
+
+    if (!settings.hooks) settings.hooks = {};
+    if (!Array.isArray(settings.hooks.PreToolUse)) settings.hooks.PreToolUse = [];
+
+    const hookCommand = `node "${hookDest}"`;
+    const hookEntry = {
+      matcher: 'Bash|WebSearch|WebFetch',
+      hooks: [{ type: 'command', command: hookCommand }],
+    };
+
+    // 检查是否已注册（按 command 匹配，避免重复）
+    // check if already registered (match by command to avoid duplicates)
+    const alreadyRegistered = settings.hooks.PreToolUse.some(entry =>
+      entry.hooks?.some(h => h.command?.includes(HOOK_FILENAME))
+    );
+
+    if (alreadyRegistered) {
+      // 更新已有条目（hook 脚本可能已更新）
+      // update existing entry (hook script may have been updated)
+      settings.hooks.PreToolUse = settings.hooks.PreToolUse.map(entry => {
+        if (entry.hooks?.some(h => h.command?.includes(HOOK_FILENAME))) {
+          return hookEntry;
+        }
+        return entry;
+      });
+      if (needCopy) {
+        fs.writeFileSync(settingsPath, JSON.stringify(settings, null, 2) + '\n', 'utf8');
+        console.log('hooks: updated (web-access hook script refreshed)');
+      } else {
+        console.log('hooks: ok');
+      }
+    } else {
+      settings.hooks.PreToolUse.push(hookEntry);
+      fs.writeFileSync(settingsPath, JSON.stringify(settings, null, 2) + '\n', 'utf8');
+      console.log('hooks: configured (PreToolUse hook registered for sub-agent CDP/search access)');
+    }
+  } catch (e) {
+    // hook 配置失败不阻塞主流程，仅警告
+    // hook setup failure is non-blocking, just warn
+    console.log(`hooks: warn (auto-config failed: ${e.message})`);
+    console.log('  子 Agent 并行调研可能因权限不足失败');
+    console.log('  详见: https://github.com/anthropics/claude-code/issues/18950');
+  }
+}
+
 // --- main ---
 
 async function main() {
   checkNode();
+  ensureHooks();
 
   const chromePort = await detectChromePort();
   if (!chromePort) {
@@ -154,7 +234,6 @@ async function main() {
   if (!proxyOk) {
     process.exit(1);
   }
-
 }
 
 await main();