diff --git a/litellm/llms/bedrock/messages/invoke_transformations/anthropic_claude3_transformation.py b/litellm/llms/bedrock/messages/invoke_transformations/anthropic_claude3_transformation.py
index 85fda3a6522..3d60cde0360 100644
--- a/litellm/llms/bedrock/messages/invoke_transformations/anthropic_claude3_transformation.py
+++ b/litellm/llms/bedrock/messages/invoke_transformations/anthropic_claude3_transformation.py
@@ -77,6 +77,15 @@ class AmazonAnthropicClaudeMessagesConfig(
         BaseAnthropicMessagesConfig.__init__(self, **kwargs)
         AmazonInvokeConfig.__init__(self, **kwargs)
 
+    def handles_web_search_natively(self) -> bool:
+        """
+        Bedrock does not host Anthropic's ``web_search_20250305`` server tool on
+        any of its APIs, so forwarding it reaches AWS and is rejected. Reporting
+        False keeps the web-search interception short-circuit in play, which is
+        the only way this tool can be served on Bedrock.
+        """
+        return False
+
     def validate_anthropic_messages_environment(
         self,
         headers: dict,
diff --git a/tests/test_litellm/integrations/websearch_interception/test_websearch_short_circuit.py b/tests/test_litellm/integrations/websearch_interception/test_websearch_short_circuit.py
index 7de8892b8fc..d46bdaffe7f 100644
--- a/tests/test_litellm/integrations/websearch_interception/test_websearch_short_circuit.py
+++ b/tests/test_litellm/integrations/websearch_interception/test_websearch_short_circuit.py
@@ -122,27 +122,41 @@ class TestTryShortCircuitSearch:
         assert result is None
 
     @pytest.mark.asyncio
-    async def test_does_not_short_circuit_bedrock(self):
-        """Bedrock has native agentic loop support → NOT short-circuited.
+    async def test_short_circuits_bedrock(self):
+        """Bedrock → short-circuit fires.
 
-        Providers with a BaseAnthropicMessagesConfig (bedrock, vertex_ai, etc.)
-        use the agentic loop which includes a follow-up LLM synthesis step.
-        The short-circuit must not fire for them.
+        Bedrock does not host Anthropic's web_search_20250305 server tool on any
+        of its APIs, so forwarding the request reaches AWS and is rejected with a
+        400. Short-circuiting is the only way the tool can be served there, so a
+        regression that makes the bedrock config claim native handling again puts
+        the deterministic 400 straight back.
         """
         logger = WebSearchInterceptionLogger(
             enabled_providers=["bedrock", "github_copilot"]
         )
 
-        result = await logger.try_short_circuit_search(
-            model="bedrock/us.anthropic.claude-sonnet-4-5-20250929-v1:0",
-            messages=[{"role": "user", "content": "Search for something"}],
-            tools=[
-                {"type": "web_search_20250305", "name": "web_search", "max_uses": 8}
-            ],
-            custom_llm_provider="bedrock",
-        )
+        with patch.object(
+            logger, "_execute_search", new_callable=AsyncMock
+        ) as mock_search:
+            mock_search.return_value = (
+                "Title: Result\nURL: https://example.com\nSnippet: test",
+                None,
+            )
 
-        assert result is None
+            result = await logger.try_short_circuit_search(
+                model="bedrock/us.anthropic.claude-sonnet-4-5-20250929-v1:0",
+                messages=[{"role": "user", "content": "Search for something"}],
+                tools=[
+                    {"type": "web_search_20250305", "name": "web_search", "max_uses": 8}
+                ],
+                custom_llm_provider="bedrock",
+            )
+
+        assert result is not None
+        block_types = [b["type"] for b in result["content"]]
+        assert "server_tool_use" in block_types
+        assert "web_search_tool_result" in block_types
+        mock_search.assert_called_once_with("Search for something")
 
     @pytest.mark.asyncio
     async def test_does_not_short_circuit_no_messages(self):
diff --git a/tests/test_litellm/llms/bedrock/messages/invoke_transformations/test_anthropic_claude3_transformation.py b/tests/test_litellm/llms/bedrock/messages/invoke_transformations/test_anthropic_claude3_transformation.py
index 76bb11cc26d..0cb9725447d 100644
--- a/tests/test_litellm/llms/bedrock/messages/invoke_transformations/test_anthropic_claude3_transformation.py
+++ b/tests/test_litellm/llms/bedrock/messages/invoke_transformations/test_anthropic_claude3_transformation.py
@@ -2580,3 +2580,22 @@ def test_replayed_intercepted_search_turn_leaves_no_unsupported_block_for_bedroc
     assert "server_tool_use" not in serialized
     assert expected_evidence in serialized
     assert "Rome was founded in 753 BC." in serialized
+
+
+def test_bedrock_messages_config_does_not_handle_web_search_natively():
+    """Bedrock hosts none of Anthropic's ``web_search_*`` server tools, so the
+    config must report ``handles_web_search_natively() is False``. That is what
+    keeps the web-search interception short-circuit in play; when it reported
+    True the tool was forwarded verbatim and AWS rejected the request. The
+    mantle subclass inherits the same answer, and the direct Anthropic config
+    must keep reporting True so the fix stays scoped to Bedrock."""
+    from litellm.llms.anthropic.experimental_pass_through.messages.transformation import (
+        AnthropicMessagesConfig,
+    )
+    from litellm.llms.bedrock.messages.mantle_transformation import (
+        AmazonMantleMessagesConfig,
+    )
+
+    assert AmazonAnthropicClaudeMessagesConfig().handles_web_search_natively() is False
+    assert AmazonMantleMessagesConfig().handles_web_search_natively() is False
+    assert AnthropicMessagesConfig().handles_web_search_natively() is True