diff --git a/lib/hooks/thread-hooks.js b/lib/hooks/thread-hooks.js
--- a/lib/hooks/thread-hooks.js
+++ b/lib/hooks/thread-hooks.js
@@ -6,6 +6,7 @@
 
 import { useChatMentionContext } from './chat-mention-hooks.js';
 import { useGetCommFCUsersForFIDs } from './user-identities-hooks.js';
+import { removeUsersFromThreadActionTypes } from '../actions/thread-action-types.js';
 import genesis from '../facts/genesis.js';
 import { extractKeyserverIDFromID } from '../keyserver-conn/keyserver-call-utils.js';
 import { useKeyserverCall } from '../keyserver-conn/keyserver-call.js';
@@ -272,7 +273,7 @@
 }
 
 export type RemoveUsersFromThreadInput = {
-  +threadID: string,
+  +threadInfo: ThreadInfo,
   +memberIDs: $ReadOnlyArray<string>,
 };
 const removeMembersFromThreadEndpointOptions = {
@@ -285,8 +286,15 @@
     input: RemoveUsersFromThreadInput,
   ) => Promise<ChangeThreadSettingsPayload>) =>
   async input => {
-    const keyserverID = extractKeyserverIDFromID(input.threadID);
-    const requests = { [keyserverID]: input };
+    const { threadInfo, memberIDs } = input;
+    const threadID = threadInfo.id;
+    const keyserverID = extractKeyserverIDFromID(threadID);
+    const requests = {
+      [keyserverID]: {
+        threadID,
+        memberIDs,
+      },
+    };
 
     const responses = await callKeyserverEndpoint(
       'remove_members',
@@ -295,7 +303,7 @@
     );
     const response = responses[keyserverID];
     return {
-      threadID: input.threadID,
+      threadID,
       updatesResult: response.updatesResult,
       newMessageInfos: response.newMessageInfos,
     };
@@ -304,7 +312,37 @@
 function useRemoveUsersFromThread(): (
   input: RemoveUsersFromThreadInput,
 ) => Promise<ChangeThreadSettingsPayload> {
-  return useKeyserverCall(removeUsersFromThread);
+  const keyserverCall = useKeyserverCall(removeUsersFromThread);
+  const dispatchActionPromise = useDispatchActionPromise();
+  return React.useCallback(
+    async (input: RemoveUsersFromThreadInput) => {
+      const { threadInfo, memberIDs } = input;
+      const protocol = threadSpecs[threadInfo.type].protocol();
+      invariant(
+        protocol.removeUsersFromThread,
+        `removeUsersFromThread not supported for thread type ` +
+          `${threadInfo.type}`,
+      );
+
+      const customKeyName =
+        memberIDs.length > 0
+          ? `${removeUsersFromThreadActionTypes.started}:${memberIDs[0]}`
+          : undefined;
+
+      return protocol.removeUsersFromThread(
+        {
+          threadInfo,
+          memberIDs,
+          customKeyName,
+        },
+        {
+          keyserverCall,
+          dispatchActionPromise,
+        },
+      );
+    },
+    [dispatchActionPromise, keyserverCall],
+  );
 }
 
 export type ChangeThreadMemberRolesInput = {
diff --git a/lib/shared/thread-actions-utils.js b/lib/shared/thread-actions-utils.js
deleted file mode 100644
--- a/lib/shared/thread-actions-utils.js
+++ /dev/null
@@ -1,31 +0,0 @@
-// @flow
-
-import { removeUsersFromThreadActionTypes } from '../actions/thread-action-types.js';
-import type { RemoveUsersFromThreadInput } from '../hooks/thread-hooks.js';
-import type {
-  RelativeMemberInfo,
-  ThreadInfo,
-} from '../types/minimally-encoded-thread-permissions-types.js';
-import type { ChangeThreadSettingsPayload } from '../types/thread-types.js';
-import type { DispatchActionPromise } from '../utils/redux-promise-utils.js';
-
-function removeMemberFromThread(
-  threadInfo: ThreadInfo,
-  memberInfo: RelativeMemberInfo,
-  dispatchActionPromise: DispatchActionPromise,
-  removeUserFromThreadServerCall: (
-    input: RemoveUsersFromThreadInput,
-  ) => Promise<ChangeThreadSettingsPayload>,
-) {
-  const customKeyName = `${removeUsersFromThreadActionTypes.started}:${memberInfo.id}`;
-  void dispatchActionPromise(
-    removeUsersFromThreadActionTypes,
-    removeUserFromThreadServerCall({
-      threadID: threadInfo.id,
-      memberIDs: [memberInfo.id],
-    }),
-    { customKeyName },
-  );
-}
-
-export { removeMemberFromThread };
diff --git a/lib/shared/threads/protocols/keyserver-thread-protocol.js b/lib/shared/threads/protocols/keyserver-thread-protocol.js
--- a/lib/shared/threads/protocols/keyserver-thread-protocol.js
+++ b/lib/shared/threads/protocols/keyserver-thread-protocol.js
@@ -16,6 +16,7 @@
   changeThreadSettingsActionTypes,
   leaveThreadActionTypes,
   newThreadActionTypes,
+  removeUsersFromThreadActionTypes,
 } from '../../../actions/thread-action-types.js';
 import {
   type MediaMetadataReassignmentAction,
@@ -119,6 +120,8 @@
   ProtocolJoinThreadInput,
   ProtocolChangeThreadMemberRolesInput,
   ChangeThreadMemberRolesUtils,
+  ProtocolRemoveUsersFromThreadInput,
+  RemoveUsersFromThreadUtils,
 } from '../thread-spec.js';
 import { threadTypeIsSidebar } from '../thread-specs.js';
 
@@ -396,6 +399,26 @@
       return await promise;
     },
 
+    removeUsersFromThread: async (
+      input: ProtocolRemoveUsersFromThreadInput,
+      utils: RemoveUsersFromThreadUtils,
+    ) => {
+      const { threadInfo, memberIDs, customKeyName } = input;
+
+      const promise = utils.keyserverCall({
+        threadInfo,
+        memberIDs,
+      });
+
+      void utils.dispatchActionPromise(
+        removeUsersFromThreadActionTypes,
+        promise,
+        customKeyName ? { customKeyName } : undefined,
+      );
+
+      return await promise;
+    },
+
     updateSubscription: (
       protocolInput: ProtocolUpdateSubscriptionInput,
       utils: UpdateSubscriptionUtils,
diff --git a/lib/shared/threads/thread-spec.js b/lib/shared/threads/thread-spec.js
--- a/lib/shared/threads/thread-spec.js
+++ b/lib/shared/threads/thread-spec.js
@@ -22,6 +22,7 @@
   UseChangeThreadSettingsInput,
   LeaveThreadInput,
   LeaveThreadResult,
+  RemoveUsersFromThreadInput,
 } from '../../hooks/thread-hooks.js';
 import type { GetCommFCUsersForFIDs } from '../../hooks/user-identities-hooks.js';
 import type { RolePermissionBlobs } from '../../permissions/thread-permissions.js';
@@ -254,6 +255,16 @@
   +auxUserStore: AuxUserStore,
 };
 
+export type ProtocolRemoveUsersFromThreadInput = {
+  +threadInfo: ThreadInfo,
+  +memberIDs: $ReadOnlyArray<string>,
+  +customKeyName?: string,
+};
+export type RemoveUsersFromThreadUtils = {
+  +keyserverCall: RemoveUsersFromThreadInput => Promise<ChangeThreadSettingsPayload>,
+  +dispatchActionPromise: DispatchActionPromise,
+};
+
 export type ProtocolUpdateSubscriptionInput = {
   +input: UseUpdateSubscriptionInput,
   +viewerID: ?string,
@@ -394,6 +405,10 @@
     input: ProtocolChangeThreadMemberRolesInput,
     utils: ChangeThreadMemberRolesUtils,
   ) => Promise<ChangeThreadSettingsPayload>,
+  +removeUsersFromThread?: (
+    input: ProtocolRemoveUsersFromThreadInput,
+    utils: RemoveUsersFromThreadUtils,
+  ) => Promise<ChangeThreadSettingsPayload>,
   +updateSubscription: (
     input: ProtocolUpdateSubscriptionInput,
     utils: UpdateSubscriptionUtils,
diff --git a/native/chat/settings/thread-settings-member-tooltip-modal.react.js b/native/chat/settings/thread-settings-member-tooltip-modal.react.js
--- a/native/chat/settings/thread-settings-member-tooltip-modal.react.js
+++ b/native/chat/settings/thread-settings-member-tooltip-modal.react.js
@@ -3,13 +3,11 @@
 import * as React from 'react';
 
 import { useRemoveUsersFromThread } from 'lib/hooks/thread-hooks.js';
-import { removeMemberFromThread } from 'lib/shared/thread-actions-utils.js';
 import { stringForUser } from 'lib/shared/user-utils.js';
 import type {
   RelativeMemberInfo,
   ThreadInfo,
 } from 'lib/types/minimally-encoded-thread-permissions-types.js';
-import { useDispatchActionPromise } from 'lib/utils/redux-promise-utils.js';
 
 import ThreadSettingsMemberTooltipButton from './thread-settings-member-tooltip-button.react.js';
 import type { AppNavigationProp } from '../../navigation/app-navigator.react';
@@ -32,18 +30,15 @@
   route: TooltipRoute<'ThreadSettingsMemberTooltipModal'>,
 ) {
   const { memberInfo, threadInfo } = route.params;
-  const boundRemoveUsersFromThread = useRemoveUsersFromThread();
-  const dispatchActionPromise = useDispatchActionPromise();
+  const removeUsersFromThread = useRemoveUsersFromThread();
 
   const onConfirmRemoveUser = React.useCallback(
     () =>
-      removeMemberFromThread(
+      void removeUsersFromThread({
         threadInfo,
-        memberInfo,
-        dispatchActionPromise,
-        boundRemoveUsersFromThread,
-      ),
-    [threadInfo, memberInfo, dispatchActionPromise, boundRemoveUsersFromThread],
+        memberIDs: [memberInfo.id],
+      }),
+    [threadInfo, memberInfo.id, removeUsersFromThread],
   );
 
   const userText = stringForUser(memberInfo);
diff --git a/web/modals/threads/members/member.react.js b/web/modals/threads/members/member.react.js
--- a/web/modals/threads/members/member.react.js
+++ b/web/modals/threads/members/member.react.js
@@ -5,7 +5,6 @@
 import { useModalContext } from 'lib/components/modal-provider.react.js';
 import SWMansionIcon from 'lib/components/swmansion-icon.react.js';
 import { useRemoveUsersFromThread } from 'lib/hooks/thread-hooks.js';
-import { removeMemberFromThread } from 'lib/shared/thread-actions-utils.js';
 import { useAvailableThreadMemberActions } from 'lib/shared/thread-utils.js';
 import { stringForUser } from 'lib/shared/user-utils.js';
 import type { SetState } from 'lib/types/hook-types.js';
@@ -13,7 +12,6 @@
   RelativeMemberInfo,
   ThreadInfo,
 } from 'lib/types/minimally-encoded-thread-permissions-types.js';
-import { useDispatchActionPromise } from 'lib/utils/redux-promise-utils.js';
 import { useRolesFromCommunityThreadInfo } from 'lib/utils/role-utils.js';
 
 import ChangeMemberRoleModal from './change-member-role-modal.react.js';
@@ -53,18 +51,15 @@
     [memberInfo.id, setOpenMenu],
   );
 
-  const dispatchActionPromise = useDispatchActionPromise();
-  const boundRemoveUsersFromThread = useRemoveUsersFromThread();
+  const removeUsersFromThread = useRemoveUsersFromThread();
 
   const onClickRemoveUser = React.useCallback(
     () =>
-      removeMemberFromThread(
+      void removeUsersFromThread({
         threadInfo,
-        memberInfo,
-        dispatchActionPromise,
-        boundRemoveUsersFromThread,
-      ),
-    [boundRemoveUsersFromThread, dispatchActionPromise, memberInfo, threadInfo],
+        memberIDs: [memberInfo.id],
+      }),
+    [removeUsersFromThread, memberInfo.id, threadInfo],
   );
 
   const onClickChangeRole = React.useCallback(() => {