diff --git a/tests/test_pagination_cursor_direction.py b/tests/test_pagination_cursor_direction.py
new file mode 100644
index 00000000..e3edd14e
--- /dev/null
+++ b/tests/test_pagination_cursor_direction.py
@@ -0,0 +1,19 @@
+from letta_client.pagination import _next_cursor_params
+
+
+def test_next_cursor_params_asc_forward_uses_after() -> None:
+    assert _next_cursor_params(params={"order": "asc"}, first_id="id-1", last_id="id-2") == {"after": "id-2"}
+
+
+def test_next_cursor_params_desc_forward_uses_before() -> None:
+    assert _next_cursor_params(params={"order": "desc"}, first_id="id-1", last_id="id-2") == {"before": "id-1"}
+
+
+def test_next_cursor_params_backward_stays_before_even_with_asc() -> None:
+    assert _next_cursor_params(
+        params={"order": "asc", "before": "id-0"}, first_id="id-1", last_id="id-2"
+    ) == {"before": "id-1"}
+
+
+def test_next_cursor_params_default_order_assumes_asc() -> None:
+    assert _next_cursor_params(params={}, first_id="id-1", last_id="id-2") == {"after": "id-2"}