diff --git a/.sampo/changesets/propagate-missing-params-module-wrappers.md b/.sampo/changesets/propagate-missing-params-module-wrappers.md
new file mode 100644
index 00000000..1112c6a9
--- /dev/null
+++ b/.sampo/changesets/propagate-missing-params-module-wrappers.md
@@ -0,0 +1,5 @@
+---
+pypi/posthog: patch
+---
+
+fix: propagate missing params in module-level wrapper functions (`distinct_id` for `group_identify`, `flag_keys_to_evaluate` for `get_all_flags`/`get_all_flags_and_payloads`)
diff --git a/posthog/__init__.py b/posthog/__init__.py
index 18995d7d..b8489185 100644
--- a/posthog/__init__.py
+++ b/posthog/__init__.py
@@ -391,6 +391,7 @@ def group_identify(
     timestamp=None,  # type: Optional[datetime.datetime]
     uuid=None,  # type: Optional[str]
     disable_geoip=None,  # type: Optional[bool]
+    distinct_id=None,  # type: Optional[str]
 ):
     # type: (...) -> Optional[str]
     """
@@ -403,6 +404,7 @@ def group_identify(
         timestamp: Optional timestamp for the event
         uuid: Optional UUID for the event
         disable_geoip: Whether to disable GeoIP lookup
+        distinct_id: Optional distinct ID of the user performing the action
 
     Examples:
         ```python
@@ -425,6 +427,7 @@ def group_identify(
         timestamp=timestamp,
         uuid=uuid,
         disable_geoip=disable_geoip,
+        distinct_id=distinct_id,
     )
 
 
@@ -611,6 +614,7 @@ def get_all_flags(
     only_evaluate_locally=False,  # type: bool
     disable_geoip=None,  # type: Optional[bool]
     device_id=None,  # type: Optional[str]
+    flag_keys_to_evaluate=None,  # type: Optional[list[str]]
 ) -> Optional[dict[str, FeatureFlag]]:
     """
     Get all flags for a given user.
@@ -622,6 +626,7 @@ def get_all_flags(
         group_properties: Group properties
         only_evaluate_locally: Whether to evaluate only locally
         disable_geoip: Whether to disable GeoIP lookup
+        flag_keys_to_evaluate: Optional list of flag keys to evaluate (evaluates all if None)
 
     Details:
         Flags are key-value pairs where the key is the flag key and the value is the flag variant, or True, or False.
@@ -644,6 +649,7 @@ def get_all_flags(
         only_evaluate_locally=only_evaluate_locally,
         disable_geoip=disable_geoip,
         device_id=device_id,
+        flag_keys_to_evaluate=flag_keys_to_evaluate,
     )
 
 
@@ -747,6 +753,7 @@ def get_all_flags_and_payloads(
     only_evaluate_locally=False,
     disable_geoip=None,  # type: Optional[bool]
     device_id=None,  # type: Optional[str]
+    flag_keys_to_evaluate=None,  # type: Optional[list[str]]
 ) -> FlagsAndPayloads:
     return _proxy(
         "get_all_flags_and_payloads",
@@ -757,6 +764,7 @@ def get_all_flags_and_payloads(
         only_evaluate_locally=only_evaluate_locally,
         disable_geoip=disable_geoip,
         device_id=device_id,
+        flag_keys_to_evaluate=flag_keys_to_evaluate,
     )
 
 
diff --git a/posthog/test/test_module.py b/posthog/test/test_module.py
index 79ed66c9..03bce00b 100644
--- a/posthog/test/test_module.py
+++ b/posthog/test/test_module.py
@@ -1,5 +1,9 @@
 import unittest
+from unittest import mock
 
+from parameterized import parameterized
+
+import posthog
 from posthog import Posthog
 
 
@@ -30,3 +34,62 @@ def test_alias(self):
 
     def test_flush(self):
         self.posthog.flush()
+
+
+class TestModuleLevelWrappers(unittest.TestCase):
+    """Test that module-level wrapper functions in posthog/__init__.py
+    correctly propagate all parameters to the Client methods."""
+
+    def setUp(self):
+        self.mock_client = mock.MagicMock()
+        self._original_client = posthog.default_client
+        posthog.default_client = self.mock_client
+
+    def tearDown(self):
+        posthog.default_client = self._original_client
+
+    def test_group_identify_propagates_distinct_id(self):
+        posthog.group_identify(
+            "company",
+            "company_123",
+            {"name": "Awesome Inc."},
+            distinct_id="user_456",
+        )
+        self.mock_client.group_identify.assert_called_once_with(
+            group_type="company",
+            group_key="company_123",
+            properties={"name": "Awesome Inc."},
+            timestamp=None,
+            uuid=None,
+            disable_geoip=None,
+            distinct_id="user_456",
+        )
+
+    def test_group_identify_distinct_id_defaults_to_none(self):
+        posthog.group_identify("company", "company_123")
+        call_kwargs = self.mock_client.group_identify.call_args[1]
+        self.assertIsNone(call_kwargs["distinct_id"])
+
+    @parameterized.expand(
+        [
+            ("get_all_flags", "get_all_flags"),
+            ("get_all_flags_and_payloads", "get_all_flags_and_payloads"),
+        ]
+    )
+    def test_flag_keys_to_evaluate_propagated(self, _name, method_name):
+        fn = getattr(posthog, method_name)
+        fn("user_123", flag_keys_to_evaluate=["flag-1", "flag-2"])
+        call_kwargs = getattr(self.mock_client, method_name).call_args[1]
+        self.assertEqual(call_kwargs["flag_keys_to_evaluate"], ["flag-1", "flag-2"])
+
+    @parameterized.expand(
+        [
+            ("get_all_flags", "get_all_flags"),
+            ("get_all_flags_and_payloads", "get_all_flags_and_payloads"),
+        ]
+    )
+    def test_flag_keys_to_evaluate_defaults_to_none(self, _name, method_name):
+        fn = getattr(posthog, method_name)
+        fn("user_123")
+        call_kwargs = getattr(self.mock_client, method_name).call_args[1]
+        self.assertIsNone(call_kwargs["flag_keys_to_evaluate"])