support header authorization in mcp_router (#267)

Author: cuericlee

config.yaml.full

@@ -57,6 +57,7 @@ tool:
     dataset_id:  #dataset name
   mcp_router:
     url: #mcp sse/streamable-http url
+    api_key: #mcp api key
   code_sandbox:
     url: #mcp sse/streamable-http url
     api_key: #mcp api key

veadk/tools/builtin_tools/mcp_router.py

@@ -15,8 +15,15 @@
 from google.adk.tools.mcp_tool.mcp_toolset import MCPToolset
 
 from veadk.config import getenv
-from veadk.utils.mcp_utils import get_mcp_params
+from google.adk.tools.mcp_tool.mcp_session_manager import (
+    StreamableHTTPConnectionParams,
+)
 
 url = getenv("TOOL_MCP_ROUTER_URL")
+api_key = getenv("TOOL_MCP_ROUTER_API_KEY")
 
-mcp_router = MCPToolset(connection_params=get_mcp_params(url=url))
+mcp_router = MCPToolset(
+    connection_params=StreamableHTTPConnectionParams(
+        url=url, headers={"Authorization": f"Bearer {api_key}"}
+    ),
+)