fix(python): preserve zero MCP streamable HTTP timeouts

python/semantic_kernel/connectors/mcp.py

@@ -886,9 +886,9 @@ def get_mcp_client(self) -> _AsyncGeneratorContextManager[Any, None]:
         }
         if self.headers:
             args["headers"] = self.headers
-        if self.timeout:
+        if self.timeout is not None:
             args["timeout"] = self.timeout
-        if self.sse_read_timeout:
+        if self.sse_read_timeout is not None:
             args["sse_read_timeout"] = self.sse_read_timeout
         if self.terminate_on_close is not None:
             args["terminate_on_close"] = self.terminate_on_close

python/tests/unit/connectors/mcp/test_mcp.py

@@ -377,6 +377,24 @@ async def test_with_kwargs_streamablehttp(mock_session, mock_client, list_tool_c
         assert len(loaded_plugin.functions["func2"].parameters) == 0
 
 
+@patch("semantic_kernel.connectors.mcp.streamablehttp_client")
+def test_streamablehttp_client_forwards_zero_timeouts(mock_streamablehttp_client):
+    plugin = MCPStreamableHttpPlugin(
+        name="TestMCPPlugin",
+        url="http://localhost:8080/mcp",
+        timeout=0.0,
+        sse_read_timeout=0.0,
+    )
+
+    assert plugin.get_mcp_client() is mock_streamablehttp_client.return_value
+
+    mock_streamablehttp_client.assert_called_once_with(
+        url="http://localhost:8080/mcp",
+        timeout=0.0,
+        sse_read_timeout=0.0,
+    )
+
+
 async def test_kernel_as_mcp_server(kernel: "Kernel", decorated_native_function, custom_plugin_class):
     kernel.add_plugin(custom_plugin_class, "test")
     kernel.add_functions("test", [decorated_native_function])