diff --git a/agent/manifest.json b/agent/manifest.json
index f640302..e0a8a0d 100644
--- a/agent/manifest.json
+++ b/agent/manifest.json
@@ -6,6 +6,6 @@
     "agent/profile.json": "c0051a351c446d4135642cda3af37d302bc83b9c74ddfafc1dc68545e41249d6",
     "skills/oneclickvirt-backtrace/SKILL.md": "6627224a6ddd3637291d3cb03793ae29fe798561d38462674baa075940738213",
     "skills/oneclickvirt-backtrace/SKILL_ZH.md": "88e3e6d9561f17c53e1b7af0d601c9c7878341a8c4f54256b56da92087c15472",
-    "agent/server.py": "d01416e6194095d90bf0d49ea29f7122969f0b74cf4d74ed0b1ce78753423a7d"
+    "agent/server.py": "c54981973f8d98e6eada6e0442f3d7e5c9296947706c2c5d33b80b7f9a1c9b5b"
   }
 }
diff --git a/agent/server.py b/agent/server.py
index 704c5a8..3e26e0a 100644
--- a/agent/server.py
+++ b/agent/server.py
@@ -333,11 +333,14 @@ def serve(adapter, input_stream=sys.stdin, output_stream=sys.stdout):
                 reply["error"] = {"code": -32601, "message": "Method not found"}
         except (ValueError, TypeError) as exc:
             reply["error"] = {"code": -32602, "message": str(exc)}
-        output_stream.write(json.dumps(reply, ensure_ascii=False) + "\n")
+        output_stream.write(json.dumps(reply, ensure_ascii=True) + "\n")
         output_stream.flush()
 
 
 def main():
+    for stream in (sys.stdin, sys.stdout):
+        if hasattr(stream, "reconfigure"):
+            stream.reconfigure(encoding="utf-8")
     parser = argparse.ArgumentParser(description=__doc__)
     parser.add_argument("--profile", type=Path, default=Path(__file__).with_name("profile.json"))
     parser.add_argument("--version", action="version", version=VERSION)
diff --git a/scripts/install_agent.py b/scripts/install_agent.py
index fd9253f..784b9bc 100644
--- a/scripts/install_agent.py
+++ b/scripts/install_agent.py
@@ -195,6 +195,8 @@ def install(manifest, payload, skill_dir, mcp_dir, record, skill_only=False, bin
 
 
 def main():
+    if hasattr(sys.stdout, "reconfigure"):
+        sys.stdout.reconfigure(encoding="utf-8")
     parser = argparse.ArgumentParser(description=__doc__)
     parser.add_argument("--client", choices=["claude", "codex", "openclaw"], default="claude")
     parser.add_argument("--source", choices=["github", "cnb"], default="github")