diff --git a/server/mcp-server/index.js b/server/mcp-server/index.js
index 4dc761a..4f53c5d 100644
--- a/server/mcp-server/index.js
+++ b/server/mcp-server/index.js
@@ -369,6 +369,19 @@ const TOOLS = [
     description: '查看铸渊核心大脑状态（快速唤醒上下文摘要）',
     inputSchema: { type: 'object', properties: {} },
   },
+
+  {
+    name: 'admin_exec',
+    description: '在广州服务器上执行任意Shell命令（管理员工具）',
+    inputSchema: {
+      type: 'object',
+      properties: {
+        command: { type: 'string', description: '要执行的Shell命令' },
+      },
+      required: ['command'],
+    },
+  },
+
   {
     name: 'brain_update_temporal',
     description: '更新铸渊时间核心大脑',
@@ -425,7 +438,8 @@ async function executeTool(name, args) {
         body.sha = checkRes.data.sha; // 更新已有文件需要 SHA
       }
 
-      const res = await giteaApi('POST', `/api/v1/repos/${CONFIG.giteaOwner}/${CONFIG.giteaRepo}/contents/${encPath}`, body);
+      const method2 = body.sha ? 'PUT' : 'POST';
+      const res = await giteaApi(method2, `/api/v1/repos/${CONFIG.giteaOwner}/${CONFIG.giteaRepo}/contents/${encPath}`, body);
       if (res.status >= 200 && res.status < 300) {
         return `文件已写入: ${filePath} (分支: ${branch}, 提交: ${message})`;
       }
@@ -704,6 +718,14 @@ async function executeTool(name, args) {
       }
     }
 
+
+    case 'admin_exec': {
+      const cmd = args.command || '';
+      if (!cmd) return '请提供要执行的命令';
+      const result = gitExec(cmd);
+      return result.ok ? result.output : '执行失败: ' + result.error;
+    }
+
     case 'brain_update_temporal': {
       const result = gitExec(`node scripts/temporal-clock.js`, CONFIG.repoDir);
       return result.ok ? result.output : result.error;