diff --git a/code_bank.go b/code_bank.go
new file mode 100644
index 0000000..6f2c9a3
--- /dev/null
+++ b/code_bank.go
@@ -0,0 +1 @@
+package siterpc
\ No newline at end of file
diff --git a/site.proto b/site.proto
index 50424cb..ded154c 100644
--- a/site.proto
+++ b/site.proto
@@ -24,4 +24,5 @@ service SiteService {
     rpc getSiteInfoByHost(Request) returns (Response);//根据host获取站点关键信息
     rpc getAllConfig (Request) returns (Response);    // 查询所有配置信息
     rpc getGroupConfig (Request) returns (Response);    // 查询分组下所有配置信息
+    rpc getOneCode (Request) returns (Response);        // 获取code_bank未使用的一条code
 }
\ No newline at end of file