diff --git a/gns3server/agent/gns3_copilot/gns3_client/api_handlers.py b/gns3server/agent/gns3_copilot/gns3_client/api_handlers.py
index 8c5a794e6..994406132 100644
--- a/gns3server/agent/gns3_copilot/gns3_client/api_handlers.py
+++ b/gns3server/agent/gns3_copilot/gns3_client/api_handlers.py
@@ -474,23 +474,26 @@ def get_node_file_handler(params: dict[str, Any], gns3_ctx: dict[str, Any]) -> d
         raw = raw[:MAX_NODE_FILE_BYTES]
         truncated = True
 
-    lines = raw.splitlines(keepends=False)
+    # keepends keeps the content byte-faithful: the trailing newline of the
+    # last line and any \r\n endings survive the round trip
+    lines = raw.splitlines(keepends=True)
     total_lines = len(lines)
 
     # Apply offset/limit
     selected = lines[offset: offset + limit] if offset < total_lines else []
     has_more = (offset + limit) < total_lines or truncated
+    content = "".join(selected)
 
     return {
         "file_path": file_path,
-        "content": "\n".join(selected),
+        "content": content,
         "metadata": {
             "total_lines": total_lines,
             "total_bytes": total_bytes,
             "offset": offset,
             "limit": limit,
             "returned_lines": len(selected),
-            "returned_bytes": len("\n".join(selected).encode("utf-8")),
+            "returned_bytes": len(content.encode("utf-8")),
             "truncated": truncated or has_more,
             "has_more": has_more,
         },
diff --git a/tests/agent/mcp/test_handlers.py b/tests/agent/mcp/test_handlers.py
index 68ca430f9..c95846870 100644
--- a/tests/agent/mcp/test_handlers.py
+++ b/tests/agent/mcp/test_handlers.py
@@ -242,6 +242,49 @@ class TestNode:
             result = get_node_console_info_handler({"project_id": "p1", "node_id": "n1"}, ctx)
             assert "command" in result
 
+    @staticmethod
+    def _file_conn(text):
+        conn = _mock_conn()
+        conn.http_call.return_value.text = text
+        return conn
+
+    def test_file_get_keeps_trailing_newline(self, ctx):
+        from gns3server.agent.gns3_copilot.gns3_client.api_handlers import get_node_file_handler
+        with patch(f"{AH}._get_connector") as m:
+            m.return_value = self._file_conn("line1\nline2\n")
+            result = get_node_file_handler({"project_id": "p1", "node_id": "n1", "file_path": "startup.cfg"}, ctx)
+            assert result["content"] == "line1\nline2\n"
+            assert result["metadata"]["total_bytes"] == 12
+            assert result["metadata"]["returned_bytes"] == 12
+            assert result["metadata"]["has_more"] is False
+
+    def test_file_get_keeps_crlf_endings(self, ctx):
+        from gns3server.agent.gns3_copilot.gns3_client.api_handlers import get_node_file_handler
+        with patch(f"{AH}._get_connector") as m:
+            m.return_value = self._file_conn("line1\r\nline2\r\n")
+            result = get_node_file_handler({"project_id": "p1", "node_id": "n1", "file_path": "startup.cfg"}, ctx)
+            assert result["content"] == "line1\r\nline2\r\n"
+            assert result["metadata"]["returned_bytes"] == 14
+
+    def test_file_get_without_trailing_newline(self, ctx):
+        from gns3server.agent.gns3_copilot.gns3_client.api_handlers import get_node_file_handler
+        with patch(f"{AH}._get_connector") as m:
+            m.return_value = self._file_conn("line1\nline2")
+            result = get_node_file_handler({"project_id": "p1", "node_id": "n1", "file_path": "startup.cfg"}, ctx)
+            assert result["content"] == "line1\nline2"
+
+    def test_file_get_pagination(self, ctx):
+        from gns3server.agent.gns3_copilot.gns3_client.api_handlers import get_node_file_handler
+        with patch(f"{AH}._get_connector") as m:
+            m.return_value = self._file_conn("line1\nline2\nline3\n")
+            result = get_node_file_handler(
+                {"project_id": "p1", "node_id": "n1", "file_path": "startup.cfg", "offset": 1, "limit": 1}, ctx
+            )
+            assert result["content"] == "line2\n"
+            assert result["metadata"]["total_lines"] == 3
+            assert result["metadata"]["returned_lines"] == 1
+            assert result["metadata"]["has_more"] is True
+
 
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