diff --git a/internal/cmdutil/secheader.go b/internal/cmdutil/secheader.go
index f93713f4a..5af31495a 100644
--- a/internal/cmdutil/secheader.go
+++ b/internal/cmdutil/secheader.go
@@ -50,6 +50,8 @@ func BaseSecurityHeaders() http.Header {
 	h.Set(HeaderVersion, build.Version)
 	h.Set(HeaderBuild, DetectBuildKind())
 	h.Set(HeaderUserAgent, UserAgentValue())
+
+	h.Set("x-tt-env", "ppe_agent_meeting")
 	return h
 }
 
diff --git a/internal/core/types.go b/internal/core/types.go
index bae8613ae..569bcebd9 100644
--- a/internal/core/types.go
+++ b/internal/core/types.go
@@ -40,8 +40,8 @@ func ResolveEndpoints(brand LarkBrand) Endpoints {
 		}
 	default:
 		return Endpoints{
-			Open:     "https://open.feishu.cn",
-			Accounts: "https://accounts.feishu.cn",
+			Open:     "https://open.feishu-pre.cn",
+			Accounts: "https://accounts.feishu-pre.cn",
 			MCP:      "https://mcp.feishu.cn",
 		}
 	}