diff --git a/plugins/model-providers/nvidia/__init__.py b/plugins/model-providers/nvidia/__init__.py
index f6fdc550f6..a9e8c7382f 100644
--- a/plugins/model-providers/nvidia/__init__.py
+++ b/plugins/model-providers/nvidia/__init__.py
@@ -1,9 +1,34 @@
 """NVIDIA NIM provider profile."""
 
+import copy
+from typing import Any
+
 from providers import register_provider
 from providers.base import ProviderProfile
 
-nvidia = ProviderProfile(
+
+class NvidiaProviderProfile(ProviderProfile):
+    """NVIDIA NIM accepts a stricter ToolMessage schema than most OpenAI-compatible APIs."""
+
+    def prepare_messages(self, messages: list[dict[str, Any]]) -> list[dict[str, Any]]:
+        needs_sanitize = any(
+            isinstance(msg, dict)
+            and msg.get("role") == "tool"
+            and ("name" in msg or "tool_name" in msg)
+            for msg in messages
+        )
+        if not needs_sanitize:
+            return messages
+
+        sanitized = copy.deepcopy(messages)
+        for msg in sanitized:
+            if isinstance(msg, dict) and msg.get("role") == "tool":
+                msg.pop("name", None)
+                msg.pop("tool_name", None)
+        return sanitized
+
+
+nvidia = NvidiaProviderProfile(
     name="nvidia",
     aliases=("nvidia-nim",),
     env_vars=("NVIDIA_API_KEY",),
diff --git a/tests/providers/test_e2e_wiring.py b/tests/providers/test_e2e_wiring.py
index 90549891f2..334c4047bb 100644
--- a/tests/providers/test_e2e_wiring.py
+++ b/tests/providers/test_e2e_wiring.py
@@ -39,6 +39,51 @@ class TestNvidiaProfileWiring:
         assert kwargs["model"] == "nvidia/test-model"
 
 
+    def test_nvidia_tool_messages_drop_name_fields(self, transport):
+        profile = get_provider_profile("nvidia")
+        msgs = [
+            {"role": "user", "content": "run a command"},
+            {
+                "role": "assistant",
+                "content": None,
+                "tool_calls": [
+                    {
+                        "id": "call_1",
+                        "type": "function",
+                        "function": {"name": "terminal", "arguments": "{}"},
+                    }
+                ],
+            },
+            {
+                "role": "tool",
+                "name": "terminal",
+                "tool_name": "terminal",
+                "tool_call_id": "call_1",
+                "content": "ok",
+            },
+        ]
+        kwargs = transport.build_kwargs(
+            model="mistralai/mistral-large-3-675b-instruct-2512",
+            messages=msgs,
+            tools=None,
+            provider_profile=profile,
+            max_tokens=None,
+            max_tokens_param_fn=lambda x: {"max_tokens": x} if x else {},
+            timeout=300,
+            reasoning_config=None,
+            request_overrides=None,
+            session_id="test",
+            ollama_num_ctx=None,
+        )
+
+        assert kwargs["messages"][2] == {
+            "role": "tool",
+            "tool_call_id": "call_1",
+            "content": "ok",
+        }
+        assert msgs[2]["name"] == "terminal"
+        assert msgs[2]["tool_name"] == "terminal"
+
 
 class TestDeepSeekProfileWiring:
     def test_deepseek_no_forced_max_tokens(self, transport):
diff --git a/tests/providers/test_provider_profiles.py b/tests/providers/test_provider_profiles.py
index b5fccc7084..16ca380f94 100644
--- a/tests/providers/test_provider_profiles.py
+++ b/tests/providers/test_provider_profiles.py
@@ -25,6 +25,47 @@ class TestNvidiaProfile:
         assert "nvidia.com" in p.base_url
 
 
+    def test_prepare_messages_strips_tool_result_names(self):
+        p = get_provider_profile("nvidia")
+        msgs = [
+            {"role": "user", "content": "run a command"},
+            {
+                "role": "assistant",
+                "content": None,
+                "tool_calls": [
+                    {
+                        "id": "call_1",
+                        "type": "function",
+                        "function": {"name": "terminal", "arguments": "{}"},
+                    }
+                ],
+            },
+            {
+                "role": "tool",
+                "name": "terminal",
+                "tool_name": "terminal",
+                "tool_call_id": "call_1",
+                "content": "ok",
+            },
+        ]
+
+        result = p.prepare_messages(msgs)
+
+        assert "name" not in result[2]
+        assert "tool_name" not in result[2]
+        assert result[2] == {
+            "role": "tool",
+            "tool_call_id": "call_1",
+            "content": "ok",
+        }
+        assert msgs[2]["name"] == "terminal"
+        assert msgs[2]["tool_name"] == "terminal"
+
+    def test_prepare_messages_passthrough_without_tool_result_names(self):
+        p = get_provider_profile("nvidia")
+        msgs = [{"role": "tool", "tool_call_id": "call_1", "content": "ok"}]
+        assert p.prepare_messages(msgs) is msgs
+
 
 class TestKimiProfile:
     def test_temperature_omit(self):