diff --git a/litellm/llms/bedrock/chat/converse_transformation.py b/litellm/llms/bedrock/chat/converse_transformation.py
index fa18361e44c..0f4717ca5e9 100644
--- a/litellm/llms/bedrock/chat/converse_transformation.py
+++ b/litellm/llms/bedrock/chat/converse_transformation.py
@@ -1614,14 +1614,7 @@ class AmazonConverseConfig(BaseConfig):
         Bedrock doesn't support tool calling without `tools=` param specified.
         """
         if "tools" not in optional_params and messages is not None and has_tool_call_blocks(messages):
-            if litellm.modify_params:
-                optional_params["tools"] = add_dummy_tool(custom_llm_provider="bedrock_converse")
-            else:
-                raise litellm.UnsupportedParamsError(
-                    message="Bedrock doesn't support tool calling without `tools=` param specified. Pass `tools=` param OR set `litellm.modify_params = True` // `litellm_settings::modify_params: True` to add dummy tool to the request.",
-                    model="",
-                    llm_provider="bedrock",
-                )
+            optional_params["tools"] = add_dummy_tool(custom_llm_provider="bedrock_converse")
 
         # Drop thinking param if thinking is enabled but thinking_blocks are missing
         # This prevents the error: "Expected thinking or redacted_thinking, but found tool_use"
diff --git a/tests/test_litellm/llms/bedrock/chat/test_converse_transformation.py b/tests/test_litellm/llms/bedrock/chat/test_converse_transformation.py
index 2e9ea90f3b8..1751b5680fc 100644
--- a/tests/test_litellm/llms/bedrock/chat/test_converse_transformation.py
+++ b/tests/test_litellm/llms/bedrock/chat/test_converse_transformation.py
@@ -6953,3 +6953,40 @@ def test_transform_response_honors_json_mode_kwarg_when_optional_params_lack_it(
     )
     assert result.choices[0].message.tool_calls is None
     assert json.loads(result.choices[0].message.content) == {"city": "Paris", "population": 2100000}
+
+
+def test_transform_request_injects_dummy_tool_without_tools_param(monkeypatch):
+    from litellm.llms.bedrock.chat.converse_transformation import AmazonConverseConfig
+
+    monkeypatch.setattr(litellm, "modify_params", False)
+    config = AmazonConverseConfig()
+
+    messages = [
+        {"role": "user", "content": "Hello"},
+        {
+            "role": "assistant",
+            "content": "Calling tool",
+            "tool_calls": [
+                {
+                    "id": "tooluse_test_dummy",
+                    "type": "function",
+                    "function": {"name": "get_x", "arguments": "{}"},
+                }
+            ],
+        },
+        {
+            "role": "tool",
+            "tool_call_id": "tooluse_test_dummy",
+            "content": "{}",
+        },
+    ]
+    result = config.transform_request(
+        model="anthropic.claude-3-5-sonnet-20240620-v1:0",
+        messages=messages,
+        optional_params={},
+        litellm_params={},
+        headers={},
+    )
+    assert "toolConfig" in result
+    assert "tools" in result["toolConfig"]
+    assert result["toolConfig"]["tools"][0]["toolSpec"]["name"] == "dummy_tool"