diff --git a/lang_agent/front_api/build_server.py b/lang_agent/front_api/build_server.py
index 4a8731a..0bfedd0 100644
--- a/lang_agent/front_api/build_server.py
+++ b/lang_agent/front_api/build_server.py
@@ -1,4 +1,5 @@
-from typing import List
+from typing import Dict, List, Optional
+import os
 import subprocess
 
 def build_route(pipeline_id:str,
@@ -6,6 +7,7 @@ def build_route(pipeline_id:str,
                 tool_keys:List[str],
                 port:str,
                 api_key: str,
+                fast_auth_keys: Optional[str] = None,
                 entry_pnt:str="fastapi_server/server_dashscope.py",
                 llm_name:str="qwen-plus"):
     cmd = [
@@ -26,7 +28,10 @@ def build_route(pipeline_id:str,
         cmd.extend(
             ["--tool-manager-config.client-tool-manager.tool-keys", *tool_keys]
         )
-    sv_prc = subprocess.Popen(cmd)
+    env: Dict[str, str] = os.environ.copy()
+    if fast_auth_keys:
+        env["FAST_AUTH_KEYS"] = fast_auth_keys
+    sv_prc = subprocess.Popen(cmd, env=env)
 
     return sv_prc, f"http://0.0.0.0:{port}"
 
@@ -36,6 +41,7 @@ def build_react(pipeline_id:str,
                 tool_keys:List[str],
                 port:str,
                 api_key: str,
+                fast_auth_keys: Optional[str] = None,
                 entry_pnt:str="fastapi_server/server_dashscope.py",
                 llm_name:str="qwen-plus"):
     cmd = [
@@ -51,7 +57,10 @@ def build_react(pipeline_id:str,
         cmd.extend(
             ["--tool-manager-config.client-tool-manager.tool-keys", *tool_keys]
         )
-    sv_prc = subprocess.Popen(cmd)
+    env: Dict[str, str] = os.environ.copy()
+    if fast_auth_keys:
+        env["FAST_AUTH_KEYS"] = fast_auth_keys
+    sv_prc = subprocess.Popen(cmd, env=env)
 
     return sv_prc, f"http://0.0.0.0:{port}"