diff --git a/changelog.d/15535.misc b/changelog.d/15535.misc
new file mode 100644
index 000000000..9981606c3
--- /dev/null
+++ b/changelog.d/15535.misc
@@ -0,0 +1 @@
+Move various module API callback registration methods to a dedicated class.
\ No newline at end of file
diff --git a/synapse/app/_base.py b/synapse/app/_base.py
index 954402e4d..7f83b34d8 100644
--- a/synapse/app/_base.py
+++ b/synapse/app/_base.py
@@ -64,7 +64,6 @@ from synapse.config.homeserver import HomeServerConfig
 from synapse.config.server import ListenerConfig, ManholeConfig, TCPListenerConfig
 from synapse.crypto import context_factory
 from synapse.events.presence_router import load_legacy_presence_router
-from synapse.events.third_party_rules import load_legacy_third_party_event_rules
 from synapse.handlers.auth import load_legacy_password_auth_providers
 from synapse.http.site import SynapseSite
 from synapse.logging.context import PreserveLoggingContext
@@ -73,6 +72,9 @@ from synapse.metrics import install_gc_manager, register_threadpool
 from synapse.metrics.background_process_metrics import wrap_as_background_process
 from synapse.metrics.jemalloc import setup_jemalloc_stats
 from synapse.module_api.callbacks.spamchecker_callbacks import load_legacy_spam_checkers
+from synapse.module_api.callbacks.third_party_event_rules_callbacks import (
+    load_legacy_third_party_event_rules,
+)
 from synapse.types import ISynapseReactor
 from synapse.util import SYNAPSE_VERSION
 from synapse.util.caches.lrucache import setup_expire_lru_cache_entries
diff --git a/synapse/handlers/auth.py b/synapse/handlers/auth.py
index 1e8944704..59e340974 100644
--- a/synapse/handlers/auth.py
+++ b/synapse/handlers/auth.py
@@ -212,7 +212,7 @@ class AuthHandler:
         self._password_enabled_for_login = hs.config.auth.password_enabled_for_login
         self._password_enabled_for_reauth = hs.config.auth.password_enabled_for_reauth
         self._password_localdb_enabled = hs.config.auth.password_localdb_enabled
-        self._third_party_rules = hs.get_third_party_event_rules()
+        self._third_party_rules = hs.get_module_api_callbacks().third_party_event_rules
 
         # Ratelimiter for failed auth during UIA. Uses same ratelimit config
         # as per `rc_login.failed_attempts`.
diff --git a/synapse/handlers/deactivate_account.py b/synapse/handlers/deactivate_account.py
index bd5867491..f299b89a1 100644
--- a/synapse/handlers/deactivate_account.py
+++ b/synapse/handlers/deactivate_account.py
@@ -39,11 +39,11 @@ class DeactivateAccountHandler:
         self._profile_handler = hs.get_profile_handler()
         self.user_directory_handler = hs.get_user_directory_handler()
         self._server_name = hs.hostname
-        self._third_party_rules = hs.get_third_party_event_rules()
+        self._third_party_rules = hs.get_module_api_callbacks().third_party_event_rules
 
         # Flag that indicates whether the process to part users from rooms is running
         self._user_parter_running = False
-        self._third_party_rules = hs.get_third_party_event_rules()
+        self._third_party_rules = hs.get_module_api_callbacks().third_party_event_rules
 
         # Start the user parter loop so it can resume parting users from rooms where
         # it left off (if it has work left to do).
diff --git a/synapse/handlers/directory.py b/synapse/handlers/directory.py
index 5e8316e2e..1e0623c7f 100644
--- a/synapse/handlers/directory.py
+++ b/synapse/handlers/directory.py
@@ -52,7 +52,9 @@ class DirectoryHandler:
         self.config = hs.config
         self.enable_room_list_search = hs.config.roomdirectory.enable_room_list_search
         self.require_membership = hs.config.server.require_membership_for_aliases
-        self.third_party_event_rules = hs.get_third_party_event_rules()
+        self._third_party_event_rules = (
+            hs.get_module_api_callbacks().third_party_event_rules
+        )
         self.server_name = hs.hostname
 
         self.federation = hs.get_federation_client()
@@ -503,7 +505,7 @@ class DirectoryHandler:
             # Check if publishing is blocked by a third party module
             allowed_by_third_party_rules = (
                 await (
-                    self.third_party_event_rules.check_visibility_can_be_modified(
+                    self._third_party_event_rules.check_visibility_can_be_modified(
                         room_id, visibility
                     )
                 )
diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index d1a88cc60..4ad808a5b 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -169,7 +169,9 @@ class FederationHandler:
 
         self._room_backfill = Linearizer("room_backfill")
 
-        self.third_party_event_rules = hs.get_third_party_event_rules()
+        self._third_party_event_rules = (
+            hs.get_module_api_callbacks().third_party_event_rules
+        )
 
         # Tracks running partial state syncs by room ID.
         # Partial state syncs currently only run on the main process, so it's okay to
@@ -1253,7 +1255,7 @@ class FederationHandler:
             unpersisted_context,
         ) = await self.event_creation_handler.create_new_client_event(builder=builder)
 
-        event_allowed, _ = await self.third_party_event_rules.check_event_allowed(
+        event_allowed, _ = await self._third_party_event_rules.check_event_allowed(
             event, unpersisted_context
         )
         if not event_allowed:
diff --git a/synapse/handlers/federation_event.py b/synapse/handlers/federation_event.py
index 06609fab9..fc1502416 100644
--- a/synapse/handlers/federation_event.py
+++ b/synapse/handlers/federation_event.py
@@ -157,7 +157,9 @@ class FederationEventHandler:
         self._get_room_member_handler = hs.get_room_member_handler
 
         self._federation_client = hs.get_federation_client()
-        self._third_party_event_rules = hs.get_third_party_event_rules()
+        self._third_party_event_rules = (
+            hs.get_module_api_callbacks().third_party_event_rules
+        )
         self._notifier = hs.get_notifier()
 
         self._is_mine_id = hs.is_mine_id
diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py
index ac1932a7f..0b61c2272 100644
--- a/synapse/handlers/message.py
+++ b/synapse/handlers/message.py
@@ -77,7 +77,6 @@ from synapse.util.metrics import measure_func
 from synapse.visibility import get_effective_room_visibility_from_state
 
 if TYPE_CHECKING:
-    from synapse.events.third_party_rules import ThirdPartyEventRules
     from synapse.server import HomeServer
 
 logger = logging.getLogger(__name__)
@@ -509,8 +508,8 @@ class EventCreationHandler:
         self._bulk_push_rule_evaluator = hs.get_bulk_push_rule_evaluator()
 
         self._spam_checker_module_callbacks = hs.get_module_api_callbacks().spam_checker
-        self.third_party_event_rules: "ThirdPartyEventRules" = (
-            self.hs.get_third_party_event_rules()
+        self._third_party_event_rules = (
+            self.hs.get_module_api_callbacks().third_party_event_rules
         )
 
         self._block_events_without_consent_error = (
@@ -1314,7 +1313,7 @@ class EventCreationHandler:
         if requester:
             context.app_service = requester.app_service
 
-        res, new_content = await self.third_party_event_rules.check_event_allowed(
+        res, new_content = await self._third_party_event_rules.check_event_allowed(
             event, context
         )
         if res is False:
diff --git a/synapse/handlers/profile.py b/synapse/handlers/profile.py
index 440d3f4ac..983b9b66f 100644
--- a/synapse/handlers/profile.py
+++ b/synapse/handlers/profile.py
@@ -61,7 +61,7 @@ class ProfileHandler:
 
         self.server_name = hs.config.server.server_name
 
-        self._third_party_rules = hs.get_third_party_event_rules()
+        self._third_party_rules = hs.get_module_api_callbacks().third_party_event_rules
 
     async def get_profile(self, user_id: str, ignore_backoff: bool = True) -> JsonDict:
         target_user = UserID.from_string(user_id)
diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py
index efd9612d9..5e1702d78 100644
--- a/synapse/handlers/room.py
+++ b/synapse/handlers/room.py
@@ -160,7 +160,9 @@ class RoomCreationHandler:
         )
         self._server_notices_mxid = hs.config.servernotices.server_notices_mxid
 
-        self.third_party_event_rules = hs.get_third_party_event_rules()
+        self._third_party_event_rules = (
+            hs.get_module_api_callbacks().third_party_event_rules
+        )
 
     async def upgrade_room(
         self, requester: Requester, old_room_id: str, new_version: RoomVersion
@@ -742,7 +744,7 @@ class RoomCreationHandler:
 
         # Let the third party rules modify the room creation config if needed, or abort
         # the room creation entirely with an exception.
-        await self.third_party_event_rules.on_create_room(
+        await self._third_party_event_rules.on_create_room(
             requester, config, is_requester_admin=is_requester_admin
         )
 
@@ -879,7 +881,7 @@ class RoomCreationHandler:
         # Check whether this visibility value is blocked by a third party module
         allowed_by_third_party_rules = (
             await (
-                self.third_party_event_rules.check_visibility_can_be_modified(
+                self._third_party_event_rules.check_visibility_can_be_modified(
                     room_id, visibility
                 )
             )
@@ -1731,7 +1733,7 @@ class RoomShutdownHandler:
         self.room_member_handler = hs.get_room_member_handler()
         self._room_creation_handler = hs.get_room_creation_handler()
         self._replication = hs.get_replication_data_handler()
-        self._third_party_rules = hs.get_third_party_event_rules()
+        self._third_party_rules = hs.get_module_api_callbacks().third_party_event_rules
         self.event_creation_handler = hs.get_event_creation_handler()
         self.store = hs.get_datastores().main
 
diff --git a/synapse/handlers/room_member.py b/synapse/handlers/room_member.py
index fbef600ac..af0ca5c26 100644
--- a/synapse/handlers/room_member.py
+++ b/synapse/handlers/room_member.py
@@ -100,7 +100,9 @@ class RoomMemberHandler(metaclass=abc.ABCMeta):
 
         self.clock = hs.get_clock()
         self._spam_checker_module_callbacks = hs.get_module_api_callbacks().spam_checker
-        self.third_party_event_rules = hs.get_third_party_event_rules()
+        self._third_party_event_rules = (
+            hs.get_module_api_callbacks().third_party_event_rules
+        )
         self._server_notices_mxid = self.config.servernotices.server_notices_mxid
         self._enable_lookup = hs.config.registration.enable_3pid_lookup
         self.allow_per_room_profiles = self.config.server.allow_per_room_profiles
@@ -1560,7 +1562,7 @@ class RoomMemberHandler(metaclass=abc.ABCMeta):
         # can't just rely on the standard ratelimiting of events.
         await self._third_party_invite_limiter.ratelimit(requester)
 
-        can_invite = await self.third_party_event_rules.check_threepid_can_be_invited(
+        can_invite = await self._third_party_event_rules.check_threepid_can_be_invited(
             medium, address, room_id
         )
         if not can_invite:
diff --git a/synapse/module_api/__init__.py b/synapse/module_api/__init__.py
index 90eff030b..4b59e6825 100644
--- a/synapse/module_api/__init__.py
+++ b/synapse/module_api/__init__.py
@@ -44,20 +44,6 @@ from synapse.events.presence_router import (
     GET_USERS_FOR_STATES_CALLBACK,
     PresenceRouter,
 )
-from synapse.events.third_party_rules import (
-    CHECK_CAN_DEACTIVATE_USER_CALLBACK,
-    CHECK_CAN_SHUTDOWN_ROOM_CALLBACK,
-    CHECK_EVENT_ALLOWED_CALLBACK,
-    CHECK_THREEPID_CAN_BE_INVITED_CALLBACK,
-    CHECK_VISIBILITY_CAN_BE_MODIFIED_CALLBACK,
-    ON_ADD_USER_THIRD_PARTY_IDENTIFIER_CALLBACK,
-    ON_CREATE_ROOM_CALLBACK,
-    ON_NEW_EVENT_CALLBACK,
-    ON_PROFILE_UPDATE_CALLBACK,
-    ON_REMOVE_USER_THIRD_PARTY_IDENTIFIER_CALLBACK,
-    ON_THREEPID_BIND_CALLBACK,
-    ON_USER_DEACTIVATION_STATUS_CHANGED_CALLBACK,
-)
 from synapse.handlers.account_data import ON_ACCOUNT_DATA_UPDATED_CALLBACK
 from synapse.handlers.auth import (
     CHECK_3PID_AUTH_CALLBACK,
@@ -105,6 +91,20 @@ from synapse.module_api.callbacks.spamchecker_callbacks import (
     USER_MAY_SEND_3PID_INVITE_CALLBACK,
     SpamCheckerModuleApiCallbacks,
 )
+from synapse.module_api.callbacks.third_party_event_rules_callbacks import (
+    CHECK_CAN_DEACTIVATE_USER_CALLBACK,
+    CHECK_CAN_SHUTDOWN_ROOM_CALLBACK,
+    CHECK_EVENT_ALLOWED_CALLBACK,
+    CHECK_THREEPID_CAN_BE_INVITED_CALLBACK,
+    CHECK_VISIBILITY_CAN_BE_MODIFIED_CALLBACK,
+    ON_ADD_USER_THIRD_PARTY_IDENTIFIER_CALLBACK,
+    ON_CREATE_ROOM_CALLBACK,
+    ON_NEW_EVENT_CALLBACK,
+    ON_PROFILE_UPDATE_CALLBACK,
+    ON_REMOVE_USER_THIRD_PARTY_IDENTIFIER_CALLBACK,
+    ON_THREEPID_BIND_CALLBACK,
+    ON_USER_DEACTIVATION_STATUS_CHANGED_CALLBACK,
+)
 from synapse.push.httppusher import HttpPusher
 from synapse.rest.client.login import LoginResponse
 from synapse.storage import DataStore
@@ -273,7 +273,6 @@ class ModuleApi:
         self._public_room_list_manager = PublicRoomListManager(hs)
         self._account_data_manager = AccountDataManager(hs)
 
-        self._third_party_event_rules = hs.get_third_party_event_rules()
         self._password_auth_provider = hs.get_password_auth_provider()
         self._presence_router = hs.get_presence_router()
         self._account_data_handler = hs.get_account_data_handler()
@@ -371,7 +370,7 @@ class ModuleApi:
 
         Added in Synapse v1.39.0.
         """
-        return self._third_party_event_rules.register_third_party_rules_callbacks(
+        return self._callbacks.third_party_event_rules.register_third_party_rules_callbacks(
             check_event_allowed=check_event_allowed,
             on_create_room=on_create_room,
             check_threepid_can_be_invited=check_threepid_can_be_invited,
diff --git a/synapse/module_api/callbacks/__init__.py b/synapse/module_api/callbacks/__init__.py
index 5cdb2c003..dcb036552 100644
--- a/synapse/module_api/callbacks/__init__.py
+++ b/synapse/module_api/callbacks/__init__.py
@@ -23,9 +23,13 @@ from synapse.module_api.callbacks.account_validity_callbacks import (
 from synapse.module_api.callbacks.spamchecker_callbacks import (
     SpamCheckerModuleApiCallbacks,
 )
+from synapse.module_api.callbacks.third_party_event_rules_callbacks import (
+    ThirdPartyEventRulesModuleApiCallbacks,
+)
 
 
 class ModuleApiCallbacks:
     def __init__(self, hs: "HomeServer") -> None:
         self.account_validity = AccountValidityModuleApiCallbacks()
         self.spam_checker = SpamCheckerModuleApiCallbacks(hs)
+        self.third_party_event_rules = ThirdPartyEventRulesModuleApiCallbacks(hs)
diff --git a/synapse/events/third_party_rules.py b/synapse/module_api/callbacks/third_party_event_rules_callbacks.py
similarity index 99%
rename from synapse/events/third_party_rules.py
rename to synapse/module_api/callbacks/third_party_event_rules_callbacks.py
index 61d4530be..911f37ba4 100644
--- a/synapse/events/third_party_rules.py
+++ b/synapse/module_api/callbacks/third_party_event_rules_callbacks.py
@@ -140,7 +140,7 @@ def load_legacy_third_party_event_rules(hs: "HomeServer") -> None:
     api.register_third_party_rules_callbacks(**hooks)
 
 
-class ThirdPartyEventRules:
+class ThirdPartyEventRulesModuleApiCallbacks:
     """Allows server admins to provide a Python module implementing an extra
     set of rules to apply when processing events.
 
@@ -149,8 +149,6 @@ class ThirdPartyEventRules:
     """
 
     def __init__(self, hs: "HomeServer"):
-        self.third_party_rules = None
-
         self.store = hs.get_datastores().main
         self._storage_controllers = hs.get_storage_controllers()
 
diff --git a/synapse/notifier.py b/synapse/notifier.py
index a8832a3f8..897272ad5 100644
--- a/synapse/notifier.py
+++ b/synapse/notifier.py
@@ -232,7 +232,7 @@ class Notifier:
 
         self._federation_client = hs.get_federation_http_client()
 
-        self._third_party_rules = hs.get_third_party_event_rules()
+        self._third_party_rules = hs.get_module_api_callbacks().third_party_event_rules
 
         self.clock = hs.get_clock()
         self.appservice_handler = hs.get_application_service_handler()
diff --git a/synapse/rest/admin/rooms.py b/synapse/rest/admin/rooms.py
index 4de56bf13..1d6556026 100644
--- a/synapse/rest/admin/rooms.py
+++ b/synapse/rest/admin/rooms.py
@@ -70,7 +70,7 @@ class RoomRestV2Servlet(RestServlet):
         self._auth = hs.get_auth()
         self._store = hs.get_datastores().main
         self._pagination_handler = hs.get_pagination_handler()
-        self._third_party_rules = hs.get_third_party_event_rules()
+        self._third_party_rules = hs.get_module_api_callbacks().third_party_event_rules
 
     async def on_DELETE(
         self, request: SynapseRequest, room_id: str
diff --git a/synapse/server.py b/synapse/server.py
index e597627a6..c557c6048 100644
--- a/synapse/server.py
+++ b/synapse/server.py
@@ -42,7 +42,6 @@ from synapse.crypto.context_factory import RegularPolicyForHTTPS
 from synapse.crypto.keyring import Keyring
 from synapse.events.builder import EventBuilderFactory
 from synapse.events.presence_router import PresenceRouter
-from synapse.events.third_party_rules import ThirdPartyEventRules
 from synapse.events.utils import EventClientSerializer
 from synapse.federation.federation_client import FederationClient
 from synapse.federation.federation_server import (
@@ -691,10 +690,6 @@ class HomeServer(metaclass=abc.ABCMeta):
     def get_stats_handler(self) -> StatsHandler:
         return StatsHandler(self)
 
-    @cache_in_self
-    def get_third_party_event_rules(self) -> ThirdPartyEventRules:
-        return ThirdPartyEventRules(self)
-
     @cache_in_self
     def get_password_auth_provider(self) -> PasswordAuthProvider:
         return PasswordAuthProvider()
diff --git a/tests/rest/client/test_third_party_rules.py b/tests/rest/client/test_third_party_rules.py
index 753ecc8d1..e5ba5a970 100644
--- a/tests/rest/client/test_third_party_rules.py
+++ b/tests/rest/client/test_third_party_rules.py
@@ -22,7 +22,9 @@ from synapse.api.errors import SynapseError
 from synapse.api.room_versions import RoomVersion
 from synapse.config.homeserver import HomeServerConfig
 from synapse.events import EventBase
-from synapse.events.third_party_rules import load_legacy_third_party_event_rules
+from synapse.module_api.callbacks.third_party_event_rules_callbacks import (
+    load_legacy_third_party_event_rules,
+)
 from synapse.rest import admin
 from synapse.rest.client import account, login, profile, room
 from synapse.server import HomeServer
@@ -146,7 +148,7 @@ class ThirdPartyRulesTestCase(unittest.FederatingHomeserverTestCase):
             return ev.type != "foo.bar.forbidden", None
 
         callback = Mock(spec=[], side_effect=check)
-        self.hs.get_third_party_event_rules()._check_event_allowed_callbacks = [
+        self.hs.get_module_api_callbacks().third_party_event_rules._check_event_allowed_callbacks = [
             callback
         ]
 
@@ -202,7 +204,9 @@ class ThirdPartyRulesTestCase(unittest.FederatingHomeserverTestCase):
         ) -> Tuple[bool, Optional[JsonDict]]:
             raise NastyHackException(429, "message")
 
-        self.hs.get_third_party_event_rules()._check_event_allowed_callbacks = [check]
+        self.hs.get_module_api_callbacks().third_party_event_rules._check_event_allowed_callbacks = [
+            check
+        ]
 
         # Make a request
         channel = self.make_request(
@@ -229,7 +233,9 @@ class ThirdPartyRulesTestCase(unittest.FederatingHomeserverTestCase):
             ev.content = {"x": "y"}
             return True, None
 
-        self.hs.get_third_party_event_rules()._check_event_allowed_callbacks = [check]
+        self.hs.get_module_api_callbacks().third_party_event_rules._check_event_allowed_callbacks = [
+            check
+        ]
 
         # now send the event
         channel = self.make_request(
@@ -253,7 +259,9 @@ class ThirdPartyRulesTestCase(unittest.FederatingHomeserverTestCase):
             d["content"] = {"x": "y"}
             return True, d
 
-        self.hs.get_third_party_event_rules()._check_event_allowed_callbacks = [check]
+        self.hs.get_module_api_callbacks().third_party_event_rules._check_event_allowed_callbacks = [
+            check
+        ]
 
         # now send the event
         channel = self.make_request(
@@ -289,7 +297,9 @@ class ThirdPartyRulesTestCase(unittest.FederatingHomeserverTestCase):
             }
             return True, d
 
-        self.hs.get_third_party_event_rules()._check_event_allowed_callbacks = [check]
+        self.hs.get_module_api_callbacks().third_party_event_rules._check_event_allowed_callbacks = [
+            check
+        ]
 
         # Send an event, then edit it.
         channel = self.make_request(
@@ -440,7 +450,9 @@ class ThirdPartyRulesTestCase(unittest.FederatingHomeserverTestCase):
                 )
             return True, None
 
-        self.hs.get_third_party_event_rules()._check_event_allowed_callbacks = [test_fn]
+        self.hs.get_module_api_callbacks().third_party_event_rules._check_event_allowed_callbacks = [
+            test_fn
+        ]
 
         # Sometimes the bug might not happen the first time the event type is added
         # to the state but might happen when an event updates the state of the room for
@@ -466,7 +478,7 @@ class ThirdPartyRulesTestCase(unittest.FederatingHomeserverTestCase):
     def test_on_new_event(self) -> None:
         """Test that the on_new_event callback is called on new events"""
         on_new_event = Mock(make_awaitable(None))
-        self.hs.get_third_party_event_rules()._on_new_event_callbacks.append(
+        self.hs.get_module_api_callbacks().third_party_event_rules._on_new_event_callbacks.append(
             on_new_event
         )
 
@@ -569,7 +581,9 @@ class ThirdPartyRulesTestCase(unittest.FederatingHomeserverTestCase):
 
         # Register a mock callback.
         m = Mock(return_value=make_awaitable(None))
-        self.hs.get_third_party_event_rules()._on_profile_update_callbacks.append(m)
+        self.hs.get_module_api_callbacks().third_party_event_rules._on_profile_update_callbacks.append(
+            m
+        )
 
         # Change the display name.
         channel = self.make_request(
@@ -628,7 +642,9 @@ class ThirdPartyRulesTestCase(unittest.FederatingHomeserverTestCase):
 
         # Register a mock callback.
         m = Mock(return_value=make_awaitable(None))
-        self.hs.get_third_party_event_rules()._on_profile_update_callbacks.append(m)
+        self.hs.get_module_api_callbacks().third_party_event_rules._on_profile_update_callbacks.append(
+            m
+        )
 
         # Register an admin user.
         self.register_user("admin", "password", admin=True)
@@ -667,7 +683,7 @@ class ThirdPartyRulesTestCase(unittest.FederatingHomeserverTestCase):
         """
         # Register a mocked callback.
         deactivation_mock = Mock(return_value=make_awaitable(None))
-        third_party_rules = self.hs.get_third_party_event_rules()
+        third_party_rules = self.hs.get_module_api_callbacks().third_party_event_rules
         third_party_rules._on_user_deactivation_status_changed_callbacks.append(
             deactivation_mock,
         )
@@ -675,7 +691,7 @@ class ThirdPartyRulesTestCase(unittest.FederatingHomeserverTestCase):
         # deactivation code calls it in a way that let modules know the user is being
         # deactivated.
         profile_mock = Mock(return_value=make_awaitable(None))
-        self.hs.get_third_party_event_rules()._on_profile_update_callbacks.append(
+        self.hs.get_module_api_callbacks().third_party_event_rules._on_profile_update_callbacks.append(
             profile_mock,
         )
 
@@ -725,7 +741,7 @@ class ThirdPartyRulesTestCase(unittest.FederatingHomeserverTestCase):
         """
         # Register a mock callback.
         m = Mock(return_value=make_awaitable(None))
-        third_party_rules = self.hs.get_third_party_event_rules()
+        third_party_rules = self.hs.get_module_api_callbacks().third_party_event_rules
         third_party_rules._on_user_deactivation_status_changed_callbacks.append(m)
 
         # Register an admin user.
@@ -779,7 +795,7 @@ class ThirdPartyRulesTestCase(unittest.FederatingHomeserverTestCase):
         """
         # Register a mocked callback.
         deactivation_mock = Mock(return_value=make_awaitable(False))
-        third_party_rules = self.hs.get_third_party_event_rules()
+        third_party_rules = self.hs.get_module_api_callbacks().third_party_event_rules
         third_party_rules._check_can_deactivate_user_callbacks.append(
             deactivation_mock,
         )
@@ -825,7 +841,7 @@ class ThirdPartyRulesTestCase(unittest.FederatingHomeserverTestCase):
         """
         # Register a mocked callback.
         deactivation_mock = Mock(return_value=make_awaitable(False))
-        third_party_rules = self.hs.get_third_party_event_rules()
+        third_party_rules = self.hs.get_module_api_callbacks().third_party_event_rules
         third_party_rules._check_can_deactivate_user_callbacks.append(
             deactivation_mock,
         )
@@ -864,7 +880,7 @@ class ThirdPartyRulesTestCase(unittest.FederatingHomeserverTestCase):
         """
         # Register a mocked callback.
         shutdown_mock = Mock(return_value=make_awaitable(False))
-        third_party_rules = self.hs.get_third_party_event_rules()
+        third_party_rules = self.hs.get_module_api_callbacks().third_party_event_rules
         third_party_rules._check_can_shutdown_room_callbacks.append(
             shutdown_mock,
         )
@@ -900,7 +916,7 @@ class ThirdPartyRulesTestCase(unittest.FederatingHomeserverTestCase):
         """
         # Register a mocked callback.
         threepid_bind_mock = Mock(return_value=make_awaitable(None))
-        third_party_rules = self.hs.get_third_party_event_rules()
+        third_party_rules = self.hs.get_module_api_callbacks().third_party_event_rules
         third_party_rules._on_threepid_bind_callbacks.append(threepid_bind_mock)
 
         # Register an admin user.
@@ -947,8 +963,7 @@ class ThirdPartyRulesTestCase(unittest.FederatingHomeserverTestCase):
         on_remove_user_third_party_identifier_callback_mock = Mock(
             return_value=make_awaitable(None)
         )
-        third_party_rules = self.hs.get_third_party_event_rules()
-        third_party_rules.register_third_party_rules_callbacks(
+        self.hs.get_module_api().register_third_party_rules_callbacks(
             on_add_user_third_party_identifier=on_add_user_third_party_identifier_callback_mock,
             on_remove_user_third_party_identifier=on_remove_user_third_party_identifier_callback_mock,
         )
@@ -1009,8 +1024,7 @@ class ThirdPartyRulesTestCase(unittest.FederatingHomeserverTestCase):
         on_remove_user_third_party_identifier_callback_mock = Mock(
             return_value=make_awaitable(None)
         )
-        third_party_rules = self.hs.get_third_party_event_rules()
-        third_party_rules.register_third_party_rules_callbacks(
+        self.hs.get_module_api().register_third_party_rules_callbacks(
             on_remove_user_third_party_identifier=on_remove_user_third_party_identifier_callback_mock,
         )
 
diff --git a/tests/server.py b/tests/server.py
index a49dc90e3..7296f0a55 100644
--- a/tests/server.py
+++ b/tests/server.py
@@ -73,11 +73,13 @@ from twisted.web.server import Request, Site
 from synapse.config.database import DatabaseConnectionConfig
 from synapse.config.homeserver import HomeServerConfig
 from synapse.events.presence_router import load_legacy_presence_router
-from synapse.events.third_party_rules import load_legacy_third_party_event_rules
 from synapse.handlers.auth import load_legacy_password_auth_providers
 from synapse.http.site import SynapseRequest
 from synapse.logging.context import ContextResourceUsage
 from synapse.module_api.callbacks.spamchecker_callbacks import load_legacy_spam_checkers
+from synapse.module_api.callbacks.third_party_event_rules_callbacks import (
+    load_legacy_third_party_event_rules,
+)
 from synapse.server import HomeServer
 from synapse.storage import DataStore
 from synapse.storage.database import LoggingDatabaseConnection