feat: groups share history mode - fix #2282

src/api/groups.controller.ts

@@ -362,13 +362,29 @@ export class GroupsController {
     @WorkingSessionParam session: WhatsappSession,
     @Param('id') id: string,
     @Body() request: SettingsMemberShareHistoryMode,
-  ) {
+  ): Promise<boolean> {
     return session.setMemberShareHistoryMode(
       id,
       request.membersCanShareHistory,
     );
   }
 
+  @Get(':id/settings/security/member-share-history-mode')
+  @SessionApiParam
+  @GroupIdApiParam
+  @CheckPolicies(CanSession(Action.Read, FromParam('session')))
+  @ApiOperation({
+    summary: 'Get settings - members can send message history to new members',
+    description:
+      'The group settings for whether members can share message history with new members, or only admins can.',
+  })
+  getMemberShareHistoryMode(
+    @WorkingSessionParam session: WhatsappSession,
+    @Param('id') id: string,
+  ): Promise<SettingsMemberShareHistoryMode> {
+    return session.getMemberShareHistoryMode(id);
+  }
+
   @Put(':id/settings/security/membership-approval')
   @SessionApiParam
   @GroupIdApiParam

src/apps/mcp/tools/groups.tools.ts

@@ -9,6 +9,7 @@ import {
   GroupIdInput,
   GroupJoinInput,
   GroupMembershipApprovalInput,
+  GroupMemberShareHistoryInput,
   GroupParticipantsInput,
   GroupPictureInput,
   GroupsListInput,
@@ -405,6 +406,47 @@ export class GroupTools extends McpController {
     });
   }
 
+  @Tool('groups-get-member-share-history', {
+    title: 'Get member share history setting',
+    description:
+      'Get whether all members or only admins can share message history with new members',
+    inputSchema: GroupIdInput,
+    annotations: {
+      readOnlyHint: true,
+      destructiveHint: false,
+      idempotentHint: true,
+    },
+  })
+  async getMemberShareHistory({ session, id }: z.infer<typeof GroupIdInput>) {
+    return this.textRequest({
+      method: 'GET',
+      url: `/api/${session}/groups/${id}/settings/security/member-share-history-mode`,
+    });
+  }
+
+  @Tool('groups-set-member-share-history', {
+    title: 'Set member share history setting',
+    description:
+      'Allow all members or only admins to share message history with new members',
+    inputSchema: GroupMemberShareHistoryInput,
+    annotations: {
+      readOnlyHint: false,
+      destructiveHint: false,
+      idempotentHint: true,
+    },
+  })
+  async setMemberShareHistory({
+    session,
+    id,
+    ...body
+  }: z.infer<typeof GroupMemberShareHistoryInput>) {
+    return this.textRequest({
+      method: 'PUT',
+      url: `/api/${session}/groups/${id}/settings/security/member-share-history-mode`,
+      data: body,
+    });
+  }
+
   @Tool('groups-get-join-requests', {
     title: 'Get pending requests to join the group',
     description: 'Get pending requests to join the group',

src/apps/mcp/tools/groups.zod.ts

@@ -8,6 +8,7 @@ import {
   JoinGroupRequest,
   ParticipantsRequest,
   SettingsMembershipApproval,
+  SettingsMemberShareHistoryMode,
   SettingsSecurityChangeInfo,
   SubjectRequest,
 } from '@waha/structures/groups.dto';
@@ -72,3 +73,10 @@ export const GroupMembershipApprovalInput = DtoToZod(
   session: SessionField,
   id: GroupIdField,
 });
+
+export const GroupMemberShareHistoryInput = DtoToZod(
+  SettingsMemberShareHistoryMode,
+).extend({
+  session: SessionField,
+  id: GroupIdField,
+});

src/core/abc/session.abc.ts

@@ -114,6 +114,7 @@ import {
   GroupsListFields,
   ParticipantsRequest,
   SettingsMemberAddMode,
+  SettingsMemberShareHistoryMode,
   SettingsMembershipApproval,
   SettingsSecurityChangeInfo,
 } from '../../structures/groups.dto';
@@ -1025,7 +1026,16 @@ export abstract class WhatsappSession {
     throw new NotImplementedByEngineError();
   }
 
-  public setMemberShareHistoryMode(id, value) {
+  public getMemberShareHistoryMode(
+    id: string,
+  ): Promise<SettingsMemberShareHistoryMode> {
+    throw new NotImplementedByEngineError();
+  }
+
+  public setMemberShareHistoryMode(
+    id: string,
+    value: boolean,
+  ): Promise<boolean> {
     throw new NotImplementedByEngineError();
   }
 

src/core/engines/gows/grpc/gows.ts

@@ -11726,6 +11726,15 @@ export namespace messages {
                 responseSerialize: (message: Empty) => Buffer.from(message.serialize()),
                 responseDeserialize: (bytes: Buffer) => Empty.deserialize(new Uint8Array(bytes))
             },
+            SetGroupMemberShareHistoryMode: {
+                path: "/messages.MessageService/SetGroupMemberShareHistoryMode",
+                requestStream: false,
+                responseStream: false,
+                requestSerialize: (message: JidBoolRequest) => Buffer.from(message.serialize()),
+                requestDeserialize: (bytes: Buffer) => JidBoolRequest.deserialize(new Uint8Array(bytes)),
+                responseSerialize: (message: Empty) => Buffer.from(message.serialize()),
+                responseDeserialize: (bytes: Buffer) => Empty.deserialize(new Uint8Array(bytes))
+            },
             UpdateGroupParticipants: {
                 path: "/messages.MessageService/UpdateGroupParticipants",
                 requestStream: false,
@@ -12144,6 +12153,7 @@ export namespace messages {
         abstract SetGroupLocked(call: grpc_1.ServerUnaryCall<JidBoolRequest, Empty>, callback: grpc_1.sendUnaryData<Empty>): void;
         abstract SetGroupAnnounce(call: grpc_1.ServerUnaryCall<JidBoolRequest, Empty>, callback: grpc_1.sendUnaryData<Empty>): void;
         abstract SetGroupMemberAddMode(call: grpc_1.ServerUnaryCall<JidBoolRequest, Empty>, callback: grpc_1.sendUnaryData<Empty>): void;
+        abstract SetGroupMemberShareHistoryMode(call: grpc_1.ServerUnaryCall<JidBoolRequest, Empty>, callback: grpc_1.sendUnaryData<Empty>): void;
         abstract UpdateGroupParticipants(call: grpc_1.ServerUnaryCall<UpdateParticipantsRequest, JsonList>, callback: grpc_1.sendUnaryData<JsonList>): void;
         abstract SetGroupJoinApprovalMode(call: grpc_1.ServerUnaryCall<JidBoolRequest, Empty>, callback: grpc_1.sendUnaryData<Empty>): void;
         abstract GetGroupRequestParticipants(call: grpc_1.ServerUnaryCall<JidRequest, JsonList>, callback: grpc_1.sendUnaryData<JsonList>): void;
@@ -12279,6 +12289,9 @@ export namespace messages {
         SetGroupMemberAddMode: GrpcUnaryServiceInterface<JidBoolRequest, Empty> = (message: JidBoolRequest, metadata: grpc_1.Metadata | grpc_1.CallOptions | grpc_1.requestCallback<Empty>, options?: grpc_1.CallOptions | grpc_1.requestCallback<Empty>, callback?: grpc_1.requestCallback<Empty>): grpc_1.ClientUnaryCall => {
             return super.SetGroupMemberAddMode(message, metadata, options, callback);
         };
+        SetGroupMemberShareHistoryMode: GrpcUnaryServiceInterface<JidBoolRequest, Empty> = (message: JidBoolRequest, metadata: grpc_1.Metadata | grpc_1.CallOptions | grpc_1.requestCallback<Empty>, options?: grpc_1.CallOptions | grpc_1.requestCallback<Empty>, callback?: grpc_1.requestCallback<Empty>): grpc_1.ClientUnaryCall => {
+            return super.SetGroupMemberShareHistoryMode(message, metadata, options, callback);
+        };
         UpdateGroupParticipants: GrpcUnaryServiceInterface<UpdateParticipantsRequest, JsonList> = (message: UpdateParticipantsRequest, metadata: grpc_1.Metadata | grpc_1.CallOptions | grpc_1.requestCallback<JsonList>, options?: grpc_1.CallOptions | grpc_1.requestCallback<JsonList>, callback?: grpc_1.requestCallback<JsonList>): grpc_1.ClientUnaryCall => {
             return super.UpdateGroupParticipants(message, metadata, options, callback);
         };

src/core/engines/gows/grpc/gows_grpc_pb.js

@@ -1073,6 +1073,18 @@ setGroupMemberAddMode: {
     responseDeserialize: deserialize_messages_Empty,
   },
   // who can add members - true - all members, false - admins only
+setGroupMemberShareHistoryMode: {
+    path: '/messages.MessageService/SetGroupMemberShareHistoryMode',
+    requestStream: false,
+    responseStream: false,
+    requestType: gows_pb.JidBoolRequest,
+    responseType: gows_pb.Empty,
+    requestSerialize: serialize_messages_JidBoolRequest,
+    requestDeserialize: deserialize_messages_JidBoolRequest,
+    responseSerialize: serialize_messages_Empty,
+    responseDeserialize: deserialize_messages_Empty,
+  },
+  // who can share message history with new members - true - all members, false - admins only
 updateGroupParticipants: {
     path: '/messages.MessageService/UpdateGroupParticipants',
     requestStream: false,

src/core/engines/gows/session.gows.core.ts

@@ -133,6 +133,7 @@ import {
   Participant,
   ParticipantsRequest,
   SettingsMemberAddMode,
+  SettingsMemberShareHistoryMode,
   SettingsMembershipApproval,
   SettingsSecurityChangeInfo,
 } from '@waha/structures/groups.dto';
@@ -1804,6 +1805,30 @@ export class WhatsappSessionGoWSCore extends WhatsappSession {
     return;
   }
 
+  public async getMemberShareHistoryMode(
+    id: string,
+  ): Promise<SettingsMemberShareHistoryMode> {
+    const group = await this.getGroup(id);
+    return {
+      membersCanShareHistory:
+        group.MemberShareHistoryMode === 'all_member_share',
+    };
+  }
+
+  @Activity()
+  public async setMemberShareHistoryMode(
+    id: string,
+    value: boolean,
+  ): Promise<boolean> {
+    const req = new messages.JidBoolRequest({
+      session: this.session,
+      jid: id,
+      value: value,
+    });
+    await promisify(this.client.SetGroupMemberShareHistoryMode)(req);
+    return true;
+  }
+
   public async getMembershipApprovalMode(
     id: string,
   ): Promise<SettingsMembershipApproval> {

src/core/engines/gows/types.group.ts

@@ -101,6 +101,7 @@ export interface GroupInfoFull {
   IsAnnounce: boolean; // specifies whether only admins can send messages in the group
   Participants: GOWSGroupParticipant[];
   MemberAddMode: string; // all_member_add | admin_add
+  MemberShareHistoryMode: string; // all_member_share | admin_share
   IsJoinApprovalRequired: boolean;
 }
 

src/core/engines/noweb/session.noweb.core.ts

@@ -28,7 +28,6 @@ import makeWASocket, {
 import { WACallEvent } from '@adiwajshing/baileys/lib/Types/Call';
 import { BaileysEventMap } from '@adiwajshing/baileys/lib/Types/Events';
 import { GroupMetadata } from '@adiwajshing/baileys/lib/Types/GroupMetadata';
-import { executeWMexQuery } from '@adiwajshing/baileys/lib/Socket/mex';
 import {
   Label as NOWEBLabel,
   LabelActionBody,
@@ -298,14 +297,6 @@ export interface NowebConfig {
   waVersion: WAVersion;
 }
 
-// WhatsApp Web MEX (w:mex) doc/query_id for the group property mutation that sets
-// "members can send message history to new members". Captured from WhatsApp Web's
-// WAWebMexUpdateGroupPropertyJobMutation on 2026-09-25 (see whatsapp-rust
-// wacore/src/iq/mex_operations.rs, mod update_group_property). WhatsApp rotates these
-// ids when Web is updated -- if this mutation starts failing, re-capture the query_id
-// from a fresh WhatsApp Web session before assuming the endpoint itself is broken.
-const MEX_QUERY_ID_UPDATE_GROUP_PROPERTY = '9418211574894172';
-
 export class WhatsappSessionNoWebCore extends WhatsappSession {
   private START_ATTEMPT_DELAY_SECONDS = 2;
   private AUTO_RESTART_AFTER_SECONDS = 28 * 60;
@@ -2248,23 +2239,21 @@ export class WhatsappSessionNoWebCore extends WhatsappSession {
     return await this.sock.groupMemberAddMode(id, mode);
   }
 
+  public async getMemberShareHistoryMode(
+    id: string,
+  ): Promise<SettingsMemberShareHistoryMode> {
+    const group = await this.getGroup(id);
+    return { membersCanShareHistory: !!group.memberShareHistoryMode };
+  }
+
   @Activity()
-  public async setMemberShareHistoryMode(id, value) {
-    const mode = value ? 'ALL_MEMBER_SHARE' : 'ADMIN_SHARE';
-    const result = await executeWMexQuery<{ state?: string }>(
-      { group_id: id, update: { member_share_group_history_mode: mode } },
-      MEX_QUERY_ID_UPDATE_GROUP_PROPERTY,
-      'xwa2_group_update_property',
-      this.sock.query,
-      this.sock.generateMessageTag,
-    );
-    if (result?.state !== 'ACTIVE') {
-      throw new Error(
-        `Failed to set member share history mode for group '${id}': ` +
-          `unexpected state '${result?.state}'`,
-      );
-    }
-    return result;
+  public async setMemberShareHistoryMode(
+    id: string,
+    value: boolean,
+  ): Promise<boolean> {
+    const mode = value ? 'all_member_share' : 'admin_share';
+    await this.sock.groupMemberShareHistoryMode(id, mode);
+    return true;
   }
 
   public async getMembershipApprovalMode(

src/core/engines/webjs/session.webjs.core.ts

@@ -117,6 +117,7 @@ import {
   GroupSortField,
   ParticipantsRequest,
   SettingsMemberAddMode,
+  SettingsMemberShareHistoryMode,
   SettingsMembershipApproval,
   SettingsSecurityChangeInfo,
 } from '@waha/structures/groups.dto';
@@ -1757,6 +1758,28 @@ export class WhatsappSessionWebJSCore extends WhatsappSession {
     return groupChat.setAddMembersAdminsOnly(!value);
   }
 
+  public async getMemberShareHistoryMode(
+    id: string,
+  ): Promise<SettingsMemberShareHistoryMode> {
+    const groupChat = (await this.whatsapp.getChatById(id)) as GroupChat;
+    return {
+      membersCanShareHistory:
+        // @ts-ignore
+        groupChat.groupMetadata.memberShareGroupHistoryMode ===
+        'all_member_share',
+    };
+  }
+
+  @Activity()
+  public async setMemberShareHistoryMode(
+    id: string,
+    value: boolean,
+  ): Promise<boolean> {
+    const groupChat = (await this.whatsapp.getChatById(id)) as GroupChat;
+    // The library setter is inverted - it takes "adminsOnly"
+    return groupChat.setShareHistoryAdminsOnly(!value);
+  }
+
   @Activity()
   public async getMembershipApprovalMode(
     id: string,

src/core/engines/wpp/session.wpp.core.ts

@@ -178,6 +178,7 @@ import {
   NormalizeJoinRequestMethod,
   ParticipantsRequest,
   SettingsMemberAddMode,
+  SettingsMemberShareHistoryMode,
   SettingsMembershipApproval,
   SettingsSecurityChangeInfo,
 } from '@waha/structures/groups.dto';
@@ -1624,6 +1625,20 @@ export class WhatsappSessionWPPCore extends WhatsappSession {
     );
   }
 
+  public async getMemberShareHistoryMode(
+    id: string,
+  ): Promise<SettingsMemberShareHistoryMode> {
+    const groupId = await this.hooks.wid.chat.promise(
+      id,
+      'getMemberShareHistoryMode',
+    );
+    const group = await this.wpp!.getChatById(groupId);
+    // Undocumented property - 'all_member_share' or 'admin_share'
+    // @ts-ignore
+    const mode = group?.groupMetadata?.memberShareGroupHistoryMode;
+    return { membersCanShareHistory: mode === 'all_member_share' };
+  }
+
   public async getMembershipApprovalMode(
     id: string,
   ): Promise<SettingsMembershipApproval> {

yarn.lock

@@ -7,7 +7,7 @@ __metadata:
 
 "@adiwajshing/baileys@github:devlikeapro/Baileys#fork-master-2026-04-28":
   version: 7.0.0-rc14
-  resolution: "@adiwajshing/baileys@https://github.com/devlikeapro/Baileys.git#commit=93433a380977fce781d25c5e40d8f12d8ea8109e"
+  resolution: "@adiwajshing/baileys@https://github.com/devlikeapro/Baileys.git#commit=14ed18cd9fc524309fbecaed4949ea73eaf6761e"
   dependencies:
     "@cacheable/node-cache": "npm:^1.4.0"
     "@hapi/boom": "npm:^9.1.3"
@@ -32,7 +32,7 @@ __metadata:
       optional: true
     link-preview-js:
       optional: true
-  checksum: 10/3fdf6e7eea36d474a46c70e645872f588d3c47dcdc99898477be1665302844aa3c5da221cd9773380ea66d28deb9e9e565a1507323be5840eba23352c7707583
+  checksum: 10/d7c290e64065517c43094f5700daf1230dfa54254aa2965d8efca94bdefbd464904a390f16d695c0305a0e7f408acd9fda566bacb30dc493ff563fcb06892873
   languageName: node
   linkType: hard
 
@@ -14381,7 +14381,7 @@ __metadata:
 
 "whatsapp-web.js@github:devlikeapro/whatsapp-web.js#fork-main-2026-06-26":
   version: 1.34.7
-  resolution: "whatsapp-web.js@https://github.com/devlikeapro/whatsapp-web.js.git#commit=a95362738822bcb670f9e20f79acaf83304a6a2d"
+  resolution: "whatsapp-web.js@https://github.com/devlikeapro/whatsapp-web.js.git#commit=7bcd3528538372f9420a63472491513066993090"
   dependencies:
     archiver: "npm:7.0.1"
     fluent-ffmpeg: "npm:2.1.3"
@@ -14398,7 +14398,7 @@ __metadata:
       optional: true
     unzipper:
       optional: true
-  checksum: 10/ee21c2d7cf3e94eccc931fca7f386aaf6fd5ba4d8f362dd79df8f45fab22298538eaedb5fa5c4ae80a622e51a229601f20fd41c90a781428ad681ce821861de6
+  checksum: 10/52b776bd9cde2799fed01ca507f8a43e17cce11254fa58cc3e96fa40f206532311050a38d6c25ee895616c9c39286615e6513c952667b6bd8610d5de03068cdb
   languageName: node
   linkType: hard