diff --git a/bfabric/engine/engine_suds.py b/bfabric/engine/engine_suds.py
index 258d0f1d..f01271a5 100644
--- a/bfabric/engine/engine_suds.py
+++ b/bfabric/engine/engine_suds.py
@@ -8,7 +8,8 @@
 
 from bfabric.engine.response_format_suds import suds_asdict_recursive
 from bfabric.errors import BfabricRequestError, get_response_errors
-from bfabric.results.result_container import _clean_result, ResultContainer
+from bfabric.results.result_container import ResultContainer
+from bfabric.results.response_format_dict import clean_result
 
 if TYPE_CHECKING:
     from suds.serviceproxy import ServiceProxy
@@ -98,10 +99,10 @@ def _convert_results(self, response: Any, endpoint: str) -> ResultContainer:
         results = []
         for result in response[endpoint]:
             result_parsed = suds_asdict_recursive(result, convert_types=True)
-            result_parsed = _clean_result(
+            result_parsed = clean_result(
                 result_parsed,
                 drop_underscores_suds=self._drop_underscores,
-                sort_responses=True,
+                sort_keys=True,
             )
             results += [result_parsed]
         return ResultContainer(results=results, total_pages_api=n_available_pages, errors=errors)
diff --git a/bfabric/engine/engine_zeep.py b/bfabric/engine/engine_zeep.py
index 0e4cf752..b91c120c 100644
--- a/bfabric/engine/engine_zeep.py
+++ b/bfabric/engine/engine_zeep.py
@@ -6,7 +6,8 @@
 from zeep.helpers import serialize_object
 
 from bfabric.errors import BfabricRequestError, get_response_errors
-from bfabric.results.result_container import ResultContainer, _clean_result
+from bfabric.results.result_container import ResultContainer
+from bfabric.results.response_format_dict import clean_result
 
 if TYPE_CHECKING:
     from bfabric.bfabric_config import BfabricAuth
@@ -122,10 +123,10 @@ def _convert_results(self, response: Any, endpoint: str) -> ResultContainer:
         results = []
         for result in response[endpoint]:
             results_parsed = dict(serialize_object(result, target_cls=dict))
-            results_parsed = _clean_result(
+            results_parsed = clean_result(
                 results_parsed,
                 drop_underscores_suds=False,  # NOTE: Underscore problem specific to SUDS
-                sort_responses=True,
+                sort_keys=True,
             )
             results += [results_parsed]
         return ResultContainer(results=results, total_pages_api=n_available_pages, errors=errors)
diff --git a/bfabric/results/response_format_dict.py b/bfabric/results/response_format_dict.py
index 47ce298a..fb7e0cc5 100644
--- a/bfabric/results/response_format_dict.py
+++ b/bfabric/results/response_format_dict.py
@@ -1,4 +1,5 @@
 from __future__ import annotations
+
 from copy import deepcopy
 
 
@@ -115,3 +116,19 @@ def sort_dicts_by_key(response: list | dict, inplace: bool = True) -> list | dic
     response_filtered = deepcopy(response) if not inplace else response
     _recursive_sort_dicts_by_key(response_filtered)
     return response_filtered
+
+
+def clean_result(result: dict, drop_underscores_suds: bool = True, sort_keys: bool = False) -> dict:
+    """
+    :param result: the response dictionary to clean
+    :param drop_underscores_suds: if True, the keys of the dictionaries in the response will have leading
+        underscores removed in some cases (relevant for SUDS)
+    :param sort_keys: the keys of the dictionaries in the response will be sorted (recursively)
+    """
+    result = deepcopy(result)
+    if drop_underscores_suds:
+        map_element_keys(result, {"_id": "id", "_classname": "classname", "_projectid": "projectid"}, inplace=True)
+    if sort_keys:
+        sort_dicts_by_key(result, inplace=True)
+
+    return result
diff --git a/bfabric/results/result_container.py b/bfabric/results/result_container.py
index 0a5c086c..b8bd3a48 100644
--- a/bfabric/results/result_container.py
+++ b/bfabric/results/result_container.py
@@ -98,19 +98,3 @@ def to_polars(self, drop_empty: bool = False) -> polars.DataFrame:
         import polars
 
         return polars.DataFrame(self.to_list_dict(drop_empty=drop_empty))
-
-
-def _clean_result(result: dict, drop_underscores_suds: bool = True, sort_responses: bool = False) -> dict:
-    """
-    :param drop_underscores_suds: if True, the keys of the dictionaries in the response will have leading
-        underscores removed in some cases (relevant for SUDS)
-    :param sort_responses: the keys of the dictionaries in the response will be sorted (recursively)
-    """
-    if drop_underscores_suds:
-        formatter.map_element_keys(
-            result, {"_id": "id", "_classname": "classname", "_projectid": "projectid"}, inplace=True
-        )
-    if sort_responses:
-        formatter.sort_dicts_by_key(result, inplace=True)
-
-    return result
diff --git a/bfabric/tests/unit/test_bfabric.py b/bfabric/tests/unit/test_bfabric.py
index 355114be..23e01d3e 100644
--- a/bfabric/tests/unit/test_bfabric.py
+++ b/bfabric/tests/unit/test_bfabric.py
@@ -267,6 +267,38 @@ def test_delete_when_auth_and_check_true(self):
         method_assert_success.assert_called_once_with()
         mock_engine.delete.assert_called_once_with(endpoint=endpoint, id=10, auth=self.mock_auth)
 
+    @patch.object(Bfabric, "read")
+    def test_exists_when_true(self, method_read):
+        method_read.return_value.__len__.return_value = 1
+        self.assertTrue(self.mock_bfabric.exists(endpoint="test_endpoint", key="key", value="value"))
+        method_read.assert_called_once_with(
+            endpoint="test_endpoint", obj={"key": "value"}, max_results=1, check=True, return_id_only=True
+        )
+
+    @patch.object(Bfabric, "read")
+    def test_exists_when_true_and_extra_args(self, method_read):
+        method_read.return_value.__len__.return_value = 1
+        self.assertTrue(
+            self.mock_bfabric.exists(
+                endpoint="test_endpoint", key="key", value="value", query={"extra": "arg"}, check=False
+            )
+        )
+        method_read.assert_called_once_with(
+            endpoint="test_endpoint",
+            obj={"key": "value", "extra": "arg"},
+            max_results=1,
+            check=False,
+            return_id_only=True,
+        )
+
+    @patch.object(Bfabric, "read")
+    def test_exists_when_false(self, method_read):
+        method_read.return_value.__len__.return_value = 0
+        self.assertFalse(self.mock_bfabric.exists(endpoint="test_endpoint", key="key", value="value"))
+        method_read.assert_called_once_with(
+            endpoint="test_endpoint", obj={"key": "value"}, max_results=1, check=True, return_id_only=True
+        )
+
     @patch.object(Bfabric, "save")
     def test_upload_resource(self, method_save):
         resource_name = "hello_world.txt"
diff --git a/bfabric/tests/unit/test_response_format_dict.py b/bfabric/tests/unit/test_response_format_dict.py
index 35c312b3..9fe1765b 100644
--- a/bfabric/tests/unit/test_response_format_dict.py
+++ b/bfabric/tests/unit/test_response_format_dict.py
@@ -1,4 +1,5 @@
 import unittest
+
 import bfabric.results.response_format_dict as response_format_dict
 
 
@@ -27,6 +28,15 @@ def test_sort_dicts_by_key(self):
         output_list_dict = response_format_dict.sort_dicts_by_key(input_list_dict, inplace=False)
         self.assertEqual(str(output_list_dict), str(target_list_dict))
 
+    def test_clean_result(self):
+        result_input = [{"b": 1, "a": 2, "_id": 3}, {"b": 4, "_id": 5, "a": 6}]
+        cleaned = response_format_dict.clean_result(result_input, drop_underscores_suds=True, sort_keys=True)
+        self.assertEqual(repr([{"a": 2, "b": 1, "id": 3}, {"a": 6, "b": 4, "id": 5}]), repr(cleaned))
+        self.assertEqual(
+            repr([{"b": 1, "a": 2, "_id": 3}, {"b": 4, "_id": 5, "a": 6}]),
+            repr(result_input),
+        )
+
 
 if __name__ == "__main__":
     unittest.main(verbosity=2)
diff --git a/bfabric/tests/unit/test_result_container.py b/bfabric/tests/unit/test_result_container.py
index 8ced19ab..6591fa89 100644
--- a/bfabric/tests/unit/test_result_container.py
+++ b/bfabric/tests/unit/test_result_container.py
@@ -1,6 +1,8 @@
 import logging
 import unittest
 
+import polars.testing
+
 from bfabric.results.result_container import ResultContainer
 
 
@@ -15,8 +17,8 @@ def test_str(self):
         self.assertEqual("[4, 5]", str(self.res2))
 
     def test_repr(self):
-        self.assertEqual("[1, 2, 3]", str(self.res1))
-        self.assertEqual("[4, 5]", str(self.res2))
+        self.assertEqual("[1, 2, 3]", repr(self.res1))
+        self.assertEqual("[4, 5]", repr(self.res2))
 
     def test_len(self):
         self.assertEqual(3, len(self.res1))
@@ -82,6 +84,11 @@ def test_to_list_dict_when_drop_empty(self):
         expected = [{"b": 1}, {"a": 2, "b": 3}]
         self.assertListEqual(expected, self.res_with_empty.to_list_dict(drop_empty=True))
 
+    def test_to_polars(self):
+        res = ResultContainer([{"a": 1, "b": 2}, {"a": 3, "b": 4}])
+        df = res.to_polars()
+        polars.testing.assert_frame_equal(polars.DataFrame({"a": [1, 3], "b": [2, 4]}), df)
+
 
 if __name__ == "__main__":
     unittest.main(verbosity=2)