diff --git a/keyserver/src/endpoints.js b/keyserver/src/endpoints.js
--- a/keyserver/src/endpoints.js
+++ b/keyserver/src/endpoints.js
@@ -82,6 +82,8 @@
 import {
   legacyUpdateRelationshipsResponder,
   legacyUpdateRelationshipInputValidator,
+  updateRelationshipsResponder,
+  updateRelationshipInputValidator,
 } from './responders/relationship-responders.js';
 import {
   reportCreationResponder,
@@ -431,6 +433,11 @@
     inputValidator: legacyUpdateRelationshipInputValidator,
     policies: baseLegalPolicies,
   },
+  update_relationships2: {
+    responder: updateRelationshipsResponder,
+    inputValidator: updateRelationshipInputValidator,
+    policies: baseLegalPolicies,
+  },
   update_role: {
     responder: roleUpdateResponder,
     inputValidator: roleChangeRequestInputValidator,
diff --git a/keyserver/src/responders/relationship-responders.js b/keyserver/src/responders/relationship-responders.js
--- a/keyserver/src/responders/relationship-responders.js
+++ b/keyserver/src/responders/relationship-responders.js
@@ -10,6 +10,8 @@
   legacyFarcasterRelationshipRequestValidator,
   relationshipActions,
   type RelationshipRequestUserInfo,
+  type RelationshipRequest,
+  relationshipActionsList,
 } from 'lib/types/relationship-types.js';
 import { tShape, tUserID } from 'lib/utils/validation-utils.js';
 
@@ -59,4 +61,22 @@
   return await updateRelationships(viewer, request);
 }
 
-export { legacyUpdateRelationshipsResponder };
+export const updateRelationshipInputValidator: TInterface<RelationshipRequest> =
+  tShape<RelationshipRequest>({
+    action: t.enums.of(relationshipActionsList, 'relationship action'),
+    users: t.dict(
+      tUserID,
+      tShape<RelationshipRequestUserInfo>({
+        createRobotextInThinThread: t.Boolean,
+      }),
+    ),
+  });
+
+async function updateRelationshipsResponder(
+  viewer: Viewer,
+  request: RelationshipRequest,
+): Promise<RelationshipErrors> {
+  return await updateRelationships(viewer, request);
+}
+
+export { legacyUpdateRelationshipsResponder, updateRelationshipsResponder };
diff --git a/lib/types/endpoints.js b/lib/types/endpoints.js
--- a/lib/types/endpoints.js
+++ b/lib/types/endpoints.js
@@ -99,6 +99,7 @@
   UPDATE_DEVICE_TOKEN: 'update_device_token',
   UPDATE_ENTRY: 'update_entry',
   LEGACY_UPDATE_RELATIONSHIPS: 'update_relationships',
+  UPDATE_RELATIONSHIPS: 'update_relationships2',
   UPDATE_ROLE: 'update_role',
   UPDATE_THREAD: 'update_thread',
   UPDATE_USER_SUBSCRIPTION: 'update_user_subscription',
diff --git a/lib/types/validators/endpoint-validators.js b/lib/types/validators/endpoint-validators.js
--- a/lib/types/validators/endpoint-validators.js
+++ b/lib/types/validators/endpoint-validators.js
@@ -158,6 +158,7 @@
   update_device_token: { validator: t.Nil },
   update_entry: { validator: saveEntryResponseValidator },
   update_relationships: { validator: relationshipErrorsValidator },
+  update_relationships2: { validator: relationshipErrorsValidator },
   update_role: { validator: changeThreadSettingsResultValidator },
   update_thread: { validator: changeThreadSettingsResultValidator },
   update_user_subscription: { validator: subscriptionUpdateResponseValidator },