diff --git a/agents-flex-core/src/main/java/com/agentsflex/core/llm/StreamResponseListener.java b/agents-flex-core/src/main/java/com/agentsflex/core/llm/StreamResponseListener.java
new file mode 100644
index 0000000..4772596
--- /dev/null
+++ b/agents-flex-core/src/main/java/com/agentsflex/core/llm/StreamResponseListener.java
@@ -0,0 +1,41 @@
+/*
+ *  Copyright (c) 2023-2025, Agents-Flex (fuhai999@gmail.com).
+ *  <p>
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *  <p>
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *  <p>
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package com.agentsflex.core.llm;
+
+import com.agentsflex.core.llm.response.AiMessageResponse;
+import org.slf4j.Logger;
+
+public interface StreamResponseListener {
+
+    Logger logger = org.slf4j.LoggerFactory.getLogger(StreamResponseListener.class);
+
+    default void onStart(ChatContext context) {
+    }
+
+    void onMessage(ChatContext context, AiMessageResponse response);
+
+    default void onStop(ChatContext context) {
+    }
+
+    default void onMatchedFunction(String functionName, ChatContext context) {
+    }
+
+    default void onFailure(ChatContext context, Throwable throwable) {
+        if (throwable != null) {
+            logger.error(throwable.toString(), throwable);
+        }
+    }
+}