diff --git a/llama_stack/providers/inline/agents/meta_reference/responses/tool_executor.py b/llama_stack/providers/inline/agents/meta_reference/responses/tool_executor.py
index 0a9967fe5..9ba04e63f 100644
--- a/llama_stack/providers/inline/agents/meta_reference/responses/tool_executor.py
+++ b/llama_stack/providers/inline/agents/meta_reference/responses/tool_executor.py
@@ -11,6 +11,9 @@ from collections.abc import AsyncIterator
 from llama_stack.apis.agents.openai_responses import (
     OpenAIResponseInputToolFileSearch,
     OpenAIResponseInputToolMCP,
+    OpenAIResponseObjectStreamResponseFileSearchCallCompleted,
+    OpenAIResponseObjectStreamResponseFileSearchCallInProgress,
+    OpenAIResponseObjectStreamResponseFileSearchCallSearching,
     OpenAIResponseObjectStreamResponseMcpCallCompleted,
     OpenAIResponseObjectStreamResponseMcpCallFailed,
     OpenAIResponseObjectStreamResponseMcpCallInProgress,
@@ -221,7 +224,13 @@ class ToolExecutor:
                 output_index=output_index,
                 sequence_number=sequence_number,
             )
-        # Note: knowledge_search and other custom tools don't have specific streaming events in OpenAI spec
+        elif function_name == "knowledge_search":
+            sequence_number += 1
+            progress_event = OpenAIResponseObjectStreamResponseFileSearchCallInProgress(
+                item_id=item_id,
+                output_index=output_index,
+                sequence_number=sequence_number,
+            )
 
         if progress_event:
             yield ToolExecutionResult(stream_event=progress_event, sequence_number=sequence_number)
@@ -236,6 +245,16 @@ class ToolExecutor:
             )
             yield ToolExecutionResult(stream_event=searching_event, sequence_number=sequence_number)
 
+        # For file search, emit searching event
+        if function_name == "knowledge_search":
+            sequence_number += 1
+            searching_event = OpenAIResponseObjectStreamResponseFileSearchCallSearching(
+                item_id=item_id,
+                output_index=output_index,
+                sequence_number=sequence_number,
+            )
+            yield ToolExecutionResult(stream_event=searching_event, sequence_number=sequence_number)
+
     async def _execute_tool(
         self,
         function_name: str,
@@ -322,7 +341,13 @@ class ToolExecutor:
                 output_index=output_index,
                 sequence_number=sequence_number,
             )
-        # Note: knowledge_search and other custom tools don't have specific completion events in OpenAI spec
+        elif function_name == "knowledge_search":
+            sequence_number += 1
+            completion_event = OpenAIResponseObjectStreamResponseFileSearchCallCompleted(
+                item_id=item_id,
+                output_index=output_index,
+                sequence_number=sequence_number,
+            )
 
         if completion_event:
             yield ToolExecutionResult(stream_event=completion_event, sequence_number=sequence_number)