diff --git a/agents-flex-core/src/main/java/com/agentsflex/core/util/IOUtil.java b/agents-flex-core/src/main/java/com/agentsflex/core/util/IOUtil.java
new file mode 100644
index 0000000..65ea39d
--- /dev/null
+++ b/agents-flex-core/src/main/java/com/agentsflex/core/util/IOUtil.java
@@ -0,0 +1,72 @@
+/*
+ *  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.util;
+
+import okio.BufferedSink;
+
+import java.io.*;
+import java.nio.charset.StandardCharsets;
+
+public class IOUtil {
+
+    public static void writeBytes(byte[] bytes, File toFile) {
+        try (FileOutputStream stream = new FileOutputStream(toFile)) {
+            stream.write(bytes);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public static byte[] readBytes(File file) {
+        try (FileInputStream inputStream = new FileInputStream(file)) {
+            return readBytes(inputStream);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public static byte[] readBytes(InputStream inputStream) {
+        try {
+            ByteArrayOutputStream outStream = new ByteArrayOutputStream();
+            copy(inputStream, outStream);
+            return outStream.toByteArray();
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public static void copy(InputStream inputStream, BufferedSink sink) throws IOException {
+        byte[] buffer = new byte[1024];
+        for (int len; (len = inputStream.read(buffer)) != -1; ) {
+            sink.write(buffer, 0, len);
+        }
+    }
+
+    public static void copy(InputStream inputStream, OutputStream outStream) throws IOException {
+        byte[] buffer = new byte[1024];
+        for (int len; (len = inputStream.read(buffer)) != -1; ) {
+            outStream.write(buffer, 0, len);
+        }
+    }
+
+    public static String readUtf8(InputStream inputStream) throws IOException {
+        ByteArrayOutputStream outStream = new ByteArrayOutputStream();
+        copy(inputStream, outStream);
+        return new String(outStream.toByteArray(), StandardCharsets.UTF_8);
+    }
+
+
+}