diff --git a/src/agent_tools.py b/src/agent_tools.py
index 987501d..ff87051 100644
--- a/src/agent_tools.py
+++ b/src/agent_tools.py
@@ -2169,10 +2169,15 @@ print("\n".join(matches) if matches else "(no matches)")
         if result.exit_code != 0:
             raise ToolExecutionError(result.stdout.strip() or 'remote glob_search failed')
         return result.stdout.strip() or '(no matches)'
+    root_resolved = context.root.resolve()
+    if Path(pattern).is_absolute():
+        try:
+            pattern = str(Path(pattern).resolve().relative_to(root_resolved))
+        except ValueError:
+            return '(no matches)'
     matches = sorted(context.root.glob(pattern))
     if not matches:
         return '(no matches)'
-    root_resolved = context.root.resolve()
     validated: list[str] = []
     for path in matches:
         try:
diff --git a/tests/test_extended_tools.py b/tests/test_extended_tools.py
index 6704f94..8dccf6b 100644
--- a/tests/test_extended_tools.py
+++ b/tests/test_extended_tools.py
@@ -99,6 +99,45 @@ class ExtendedToolTests(unittest.TestCase):
         self.assertIn('[line truncated,', result.content)
         self.assertLess(len(result.content), 1200)
 
+    def test_glob_search_accepts_absolute_path_inside_workspace(self) -> None:
+        registry = default_tool_registry()
+        with tempfile.TemporaryDirectory() as tmp_dir:
+            workspace = Path(tmp_dir)
+            target_dir = workspace / 'output'
+            target_dir.mkdir()
+            (target_dir / 'records.jsonl').write_text('{}\n', encoding='utf-8')
+            context = build_tool_context(
+                AgentRuntimeConfig(cwd=workspace),
+                tool_registry=registry,
+            )
+            result = execute_tool(
+                registry,
+                'glob_search',
+                {'pattern': str(target_dir / '*.jsonl')},
+                context,
+            )
+
+        self.assertTrue(result.ok)
+        self.assertIn('output/records.jsonl', result.content)
+
+    def test_glob_search_external_absolute_path_returns_no_matches(self) -> None:
+        registry = default_tool_registry()
+        with tempfile.TemporaryDirectory() as workspace_dir, tempfile.TemporaryDirectory() as external_dir:
+            external = Path(external_dir) / '*.jsonl'
+            context = build_tool_context(
+                AgentRuntimeConfig(cwd=Path(workspace_dir)),
+                tool_registry=registry,
+            )
+            result = execute_tool(
+                registry,
+                'glob_search',
+                {'pattern': str(external)},
+                context,
+            )
+
+        self.assertTrue(result.ok)
+        self.assertEqual(result.content, '(no matches)')
+
     def test_read_file_can_read_explicit_external_path(self) -> None:
         registry = default_tool_registry()
         with tempfile.TemporaryDirectory() as workspace_dir, tempfile.TemporaryDirectory() as external_dir: