diff --git a/astrbot/core/agent/mcp_client.py b/astrbot/core/agent/mcp_client.py
index 0264dd3a0..c149792dc 100644
--- a/astrbot/core/agent/mcp_client.py
+++ b/astrbot/core/agent/mcp_client.py
@@ -78,7 +78,7 @@ _DENIED_STDIO_COMMANDS = frozenset(
         "halt",
     }
 )
-_SHELL_META_RE = re.compile(r"[\r\n\x00;&|<>`$()]")
+_SHELL_META_RE = re.compile(r"[\r\n\x00;&|<>`$]")
 _PYTHON_INLINE_CODE_FLAGS = frozenset({"-c"})
 _JS_INLINE_CODE_FLAGS = frozenset({"-e", "--eval", "-p", "--print"})
 _DENIED_DOCKER_ARGS = frozenset(