diff --git a/agents-flex-core/src/main/java/com/agentsflex/core/message/FunctionCall.java b/agents-flex-core/src/main/java/com/agentsflex/core/message/FunctionCall.java
new file mode 100644
index 0000000..0289733
--- /dev/null
+++ b/agents-flex-core/src/main/java/com/agentsflex/core/message/FunctionCall.java
@@ -0,0 +1,68 @@
+/*
+ *  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.message;
+
+import java.io.Serializable;
+import java.util.Map;
+
+public class FunctionCall implements Serializable {
+
+    private String id;
+    private String name;
+    private Map<String, Object> args;
+
+    public FunctionCall() {
+    }
+
+    public FunctionCall(String id, String name, Map<String, Object> args) {
+        this.id = id;
+        this.name = name;
+        this.args = args;
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Map<String, Object> getArgs() {
+        return args;
+    }
+
+    public void setArgs(Map<String, Object> args) {
+        this.args = args;
+    }
+
+    @Override
+    public String toString() {
+        return "FunctionCall{" +
+            "id='" + id + '\'' +
+            ", name='" + name + '\'' +
+            ", args=" + args +
+            '}';
+    }
+}