diff --git a/evals/eval_day1_5_naive_agent.py b/evals/eval_day1_5_naive_agent.py
new file mode 100644
index 0000000..f6fbc80
--- /dev/null
+++ b/evals/eval_day1_5_naive_agent.py
@@ -0,0 +1,68 @@
+import asyncio
+from typing import Any
+
+import weave
+from dotenv import load_dotenv
+from langchain_core.messages import AIMessage, HumanMessage
+from weave import Evaluation, Model
+
+from pages.day1_5_naive_agent import create_agent_with_tools
+
+
+class MyModel(Model):
+    model_name: str
+    reasoning_effort: str
+
+    @weave.op
+    def predict(self, message: str) -> Any:
+        # エージェントを作成
+        agent = create_agent_with_tools(
+            model_name=self.model_name,
+            reasoning_effort=self.reasoning_effort,
+        )
+
+        # エージェントを実行
+        return agent.invoke({"messages": [HumanMessage(content=message)]})
+
+
+@weave.op
+def exist_tool_call(output: Any, expected_tool: str) -> int:
+    messages = output["messages"]
+
+    # expected_toolが含まれるtool_callがあるかどうかを確認
+    for message in messages:
+        if isinstance(message, AIMessage):
+            if len(message.tool_calls) > 0:
+                for tool_call in message.tool_calls:
+                    if tool_call["name"] == expected_tool:
+                        return 1
+
+    return 0
+
+
+dataset = [
+    {"message": "東京の今日の天気は？", "expected_tool": "tavily_search"},
+    {"message": "東京の今日の天気は？Web検索して", "expected_tool": "tavily_search"},
+]
+
+
+def main() -> None:
+    load_dotenv(override=True)
+    weave.init("training-llm-app")
+
+    # 評価対象の処理を準備
+    my_model = MyModel(
+        model_name="gpt-5-nano",
+        reasoning_effort="minimal",
+    )
+
+    # 評価の実行
+    evaluation = Evaluation(
+        dataset=dataset,
+        scorers=[exist_tool_call],
+    )
+    asyncio.run(evaluation.evaluate(my_model))
+
+
+if __name__ == "__main__":
+    main()
diff --git a/pages/day1_5_naive_agent.py b/pages/day1_5_naive_agent.py
index 08b1d90..2c9d920 100644
--- a/pages/day1_5_naive_agent.py
+++ b/pages/day1_5_naive_agent.py
@@ -132,4 +132,5 @@ def app() -> None:
     messages.extend(new_messages)
 
 
-app()
+if __name__ == "__main__":
+    app()