diff --git a/src/google/adk/tools/mcp_tool/mcp_tool.py b/src/google/adk/tools/mcp_tool/mcp_tool.py
index 49ee80af039..7892f45cb40 100644
--- a/src/google/adk/tools/mcp_tool/mcp_tool.py
+++ b/src/google/adk/tools/mcp_tool/mcp_tool.py
@@ -430,6 +430,7 @@ async def run_async(
                   " ToolConfirmation payload."
               ),
           )
+          tool_context.actions.skip_summarization = True
           return {
               "error": (
                   "This tool call requires confirmation, please approve or"
diff --git a/tests/unittests/tools/mcp_tool/test_mcp_tool.py b/tests/unittests/tools/mcp_tool/test_mcp_tool.py
index 4e8564dce17..0b39bbe5abd 100644
--- a/tests/unittests/tools/mcp_tool/test_mcp_tool.py
+++ b/tests/unittests/tools/mcp_tool/test_mcp_tool.py
@@ -1056,6 +1056,7 @@ async def test_run_async_require_confirmation_true_no_confirmation(self):
         )
     }
     tool_context.request_confirmation.assert_called_once()
+    assert tool_context.actions.skip_summarization is True
 
   @pytest.mark.asyncio
   async def test_run_async_require_confirmation_true_rejected(self):