diff --git a/agentscope-harness/src/main/java/io/agentscope/harness/agent/filesystem/sandbox/BaseSandboxFilesystem.java b/agentscope-harness/src/main/java/io/agentscope/harness/agent/filesystem/sandbox/BaseSandboxFilesystem.java
index 139dae8c80..f0d0a794dd 100644
--- a/agentscope-harness/src/main/java/io/agentscope/harness/agent/filesystem/sandbox/BaseSandboxFilesystem.java
+++ b/agentscope-harness/src/main/java/io/agentscope/harness/agent/filesystem/sandbox/BaseSandboxFilesystem.java
@@ -279,7 +279,7 @@ public GrepResult grep(
         String grepOpts = "-rHnF";
         String globPattern = "";
         if (glob != null && !glob.isBlank()) {
-            globPattern = "--include=" + FilesystemUtils.shellQuote(glob);
+            globPattern = "--include=" + FilesystemUtils.shellQuote(stripRecursivePrefix(glob));
         }
         String patternEscaped = FilesystemUtils.shellQuote(pattern);
 
@@ -319,7 +319,7 @@ public GrepResult grep(
     @Override
     public GlobResult glob(RuntimeContext runtimeContext, String pattern, String path) {
         String escapedPath = FilesystemUtils.shellQuote(path != null ? path : "/");
-        String escapedPattern = FilesystemUtils.shellQuote(pattern);
+        String escapedPattern = FilesystemUtils.shellQuote(stripRecursivePrefix(pattern));
 
         String cmd =
                 "find " + escapedPath + " -type f -name " + escapedPattern + " 2>/dev/null | sort";
@@ -379,6 +379,21 @@ public boolean exists(RuntimeContext runtimeContext, String path) {
         return result.output() != null && result.output().strip().startsWith("yes");
     }
 
+    /**
+     * Strips the recursive glob prefix {@code **/} from a pattern so it can be passed to
+     * tools like {@code find -name} or {@code grep --include=} that match only the filename
+     * portion. For example, {@code **/*.java} becomes {@code *.java}.
+     *
+     * @param pattern the glob pattern, may be {@code null}
+     * @return the pattern with any leading {@code **/} removed, or the original value if absent
+     */
+    private static String stripRecursivePrefix(String pattern) {
+        if (pattern != null && pattern.startsWith("**/")) {
+            return pattern.substring(3);
+        }
+        return pattern;
+    }
+
     private static String jsonEscape(String s) {
         if (s == null) {
             return "";
diff --git a/agentscope-harness/src/test/java/io/agentscope/harness/agent/filesystem/sandbox/BaseSandboxFilesystemTest.java b/agentscope-harness/src/test/java/io/agentscope/harness/agent/filesystem/sandbox/BaseSandboxFilesystemTest.java
new file mode 100644
index 0000000000..39c2d9417f
--- /dev/null
+++ b/agentscope-harness/src/test/java/io/agentscope/harness/agent/filesystem/sandbox/BaseSandboxFilesystemTest.java
@@ -0,0 +1,97 @@
+/*
+ * Copyright 2024-2026 the original author or authors.
+ *
+ * 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
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * 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 io.agentscope.harness.agent.filesystem.sandbox;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import io.agentscope.core.agent.RuntimeContext;
+import io.agentscope.harness.agent.filesystem.model.ExecuteResponse;
+import io.agentscope.harness.agent.filesystem.model.FileDownloadResponse;
+import io.agentscope.harness.agent.filesystem.model.FileUploadResponse;
+import io.agentscope.harness.agent.filesystem.model.GlobResult;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+import org.junit.jupiter.api.Test;
+
+class BaseSandboxFilesystemTest {
+
+    private static final RuntimeContext RT = RuntimeContext.empty();
+
+    @Test
+    void glob_recursivePattern_stripsDoubleStarPrefixBeforeFindName() {
+        FakeSandboxFilesystem filesystem = new FakeSandboxFilesystem();
+
+        GlobResult result = filesystem.glob(RT, "**/*.md", "/workspace");
+
+        assertTrue(result.isSuccess());
+        assertEquals(
+                "find '/workspace' -type f -name '*.md' 2>/dev/null | sort",
+                filesystem.lastCommand);
+        assertEquals(
+                List.of("/workspace/README.md", "/workspace/docs/guide.md"),
+                result.matches().stream().map(match -> match.path()).collect(Collectors.toList()));
+    }
+
+    @Test
+    void glob_plainPattern_keepsFindNamePatternUnchanged() {
+        FakeSandboxFilesystem filesystem = new FakeSandboxFilesystem();
+
+        GlobResult result = filesystem.glob(RT, "*.md", "/workspace");
+
+        assertTrue(result.isSuccess());
+        assertEquals(
+                "find '/workspace' -type f -name '*.md' 2>/dev/null | sort",
+                filesystem.lastCommand);
+        assertEquals(
+                List.of("/workspace/README.md", "/workspace/docs/guide.md"),
+                result.matches().stream().map(match -> match.path()).collect(Collectors.toList()));
+    }
+
+    private static final class FakeSandboxFilesystem extends BaseSandboxFilesystem {
+
+        private String lastCommand;
+
+        @Override
+        public String id() {
+            return "fake";
+        }
+
+        @Override
+        public ExecuteResponse execute(
+                RuntimeContext runtimeContext, String command, Integer timeoutSeconds) {
+            lastCommand = command;
+            if ("find '/workspace' -type f -name '*.md' 2>/dev/null | sort".equals(command)) {
+                return new ExecuteResponse(
+                        "/workspace/README.md\n/workspace/docs/guide.md\n", 0, false);
+            }
+            return new ExecuteResponse("", 0, false);
+        }
+
+        @Override
+        public List<FileUploadResponse> uploadFiles(
+                RuntimeContext runtimeContext, List<Map.Entry<String, byte[]>> files) {
+            return List.of();
+        }
+
+        @Override
+        public List<FileDownloadResponse> downloadFiles(
+                RuntimeContext runtimeContext, List<String> paths) {
+            return List.of();
+        }
+    }
+}