fix(ChatWoot): duplicate contact created for same LID without phone number - fix #2246

Co-authored-by: Julián Valdés <julianvaldes24@gmail.com>

.env.example

@@ -56,6 +56,20 @@ WAHA_LOG_LEVEL=info
 # Don't print QR codes in logs
 WAHA_PRINT_QR=False
 
+# ======================
+# ===== PROMETHEUS =====
+# ======================
+# Prometheus metrics endpoint - GET /metrics
+# WAHA_PROMETHEUS_ENABLED=True
+# WAHA_PROMETHEUS_PATH=/metrics
+# WAHA_PROMETHEUS_METRIC_PREFIX=waha_
+# WAHA_PROMETHEUS_HTTP_DURATION_BUCKETS=0.005,0.01,0.025,0.05,0.1,0.25,0.5,1,2.5,5,10,30
+# Events to count in waha_events_total ('*' for all) - the server actively processes listed events even with no webhooks
+# WAHA_PROMETHEUS_TRACK_EVENTS=message.any
+# Optional basic auth for the metrics endpoint (both must be set)
+# WAHA_PROMETHEUS_USERNAME=admin
+# WAHA_PROMETHEUS_PASSWORD=secret
+
 # =========================
 # ===== MEDIA STORAGE =====
 # =========================
@@ -64,7 +78,17 @@ WAHA_MEDIA_STORAGE=LOCAL
 WHATSAPP_FILES_LIFETIME=0
 WHATSAPP_FILES_FOLDER=/app/.media
 
+#
 # Media download settings
+#
+# Events (webhooks, websockets)
+# WAHA_EVENTS_DOWNLOAD_MEDIA=true
+# WAHA_EVENTS_DOWNLOAD_MEDIA_MIMETYPES=image/jpeg,image/png
+# API default behavior (GET /api/{session}/chats/{chatId}/messages, etc.)
+# WAHA_API_DOWNLOAD_MEDIA=true
+# WAHA_API_DOWNLOAD_MEDIA_MIMETYPES=image/jpeg,image/png
+
+# DEPRECATED - use WAHA_EVENTS_* and WAHA_API_* variables above
 # WHATSAPP_DOWNLOAD_MEDIA=true
 # WHATSAPP_FILES_MIMETYPES=image/jpeg,image/png
 

.env.yarn

@@ -0,0 +1 @@
+SHARP_IGNORE_GLOBAL_LIBVIPS=1

.github/workflows/dev.yaml

@@ -35,7 +35,7 @@ jobs:
   #        run: yarn test:unit
 
   docker-build:
-    if: github.repository == 'devlikeapro/waha-plus'
+    if: github.repository == 'devlikeapro/waha'
     #    needs: unit-tests
     runs-on: ${{ matrix.runner }}
     name:
@@ -73,6 +73,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v3
         with:
+          ref: dev
           fetch-depth: 0
 
       - name: Check recent changes

.yarnrc.yml

@@ -1,9 +1,16 @@
+approvedGitRepositories:
+  - '**'
+
 compressionLevel: mixed
 
 enableGlobalCache: false
 
+enableScripts: true
+
 nodeLinker: node-modules
 
+npmMinimalAgeGate: 0
+
 supportedArchitectures:
   cpu:
     - arm

Dockerfile

@@ -16,10 +16,10 @@ RUN apt-get update && \
 WORKDIR /git
 COPY package.json .
 COPY yarn.lock .
+COPY .yarnrc.yml .
 ENV YARN_CHECKSUM_BEHAVIOR=update
 
 RUN npm install -g corepack && corepack enable
-RUN yarn set version 4.9.2
 RUN yarn install
 
 # App
@@ -179,7 +179,7 @@ RUN if [ "$USE_BROWSER" = "chromium" ]; then \
 # Install Chrome
 # Available versions:
 # https://www.ubuntuupdates.org/package/google_chrome/stable/main/base/google-chrome-stable
-ARG CHROME_VERSION="140.0.7339.80-1"
+ARG CHROME_VERSION="142.0.7444.134-1"
 ARG OPUSTAGS_VERSION="1.10.1"
 RUN if [ "$USE_BROWSER" = "chrome" ]; then \
         wget --no-verbose -O /tmp/chrome.deb https://dl.google.com/linux/chrome/deb/pool/main/g/google-chrome-stable/google-chrome-stable_${CHROME_VERSION}_amd64.deb \

Makefile

@@ -44,8 +44,8 @@ up-webjs:
 	yarn up whatsapp-web.js@github:devlikeapro/whatsapp-web.js#fork-main-2026-06-26
 
 up-wpp:
-	yarn up @wppconnect-team/wppconnect@github:wppconnect-team/wppconnect#master
-	yarn up @wppconnect/wa-js@github:wppconnect-team/wa-js#main
+	SHARP_IGNORE_GLOBAL_LIBVIPS=1 yarn up @wppconnect-team/wppconnect@github:wppconnect-team/wppconnect#master
+	SHARP_IGNORE_GLOBAL_LIBVIPS=1 yarn up @wppconnect/wa-js@github:wppconnect-team/wa-js#main
 
 up-rust-bridge:
 	yarn up -R whatsapp-rust-bridge

docker-compose/chatwoot/.waha.env

@@ -60,7 +60,17 @@ WAHA_MEDIA_STORAGE=LOCAL
 WHATSAPP_FILES_LIFETIME=1800
 WHATSAPP_FILES_FOLDER=/app/.media
 
+#
 # Media download settings
+#
+# Events (webhooks, websockets)
+# WAHA_EVENTS_DOWNLOAD_MEDIA=true
+# WAHA_EVENTS_DOWNLOAD_MEDIA_MIMETYPES=image/jpeg,image/png
+# API default behavior (GET /api/{session}/chats/{chatId}/messages, etc.)
+# WAHA_API_DOWNLOAD_MEDIA=true
+# WAHA_API_DOWNLOAD_MEDIA_MIMETYPES=image/jpeg,image/png
+
+# DEPRECATED - use WAHA_EVENTS_* and WAHA_API_* variables above
 # WHATSAPP_DOWNLOAD_MEDIA=true
 # WHATSAPP_FILES_MIMETYPES=image/jpeg,image/png
 

nest-cli.json

@@ -3,7 +3,6 @@
   "sourceRoot": "src",
   "compilerOptions": {
     "plugins": ["@nestjs/swagger"],
-    "watchPathIgnorePatterns": ["node_modules", "src/dashboard", "dist"],
     "assets": [
       { "include": "dashboard/**", "watchAssets": false },
       { "include": "core/engines/webjs/*", "watchAssets": true },

package.json

@@ -54,6 +54,12 @@
     "@nestjs/swagger": "^7.1.11",
     "@nestjs/terminus": "^10.2.3",
     "@nestjs/websockets": "^11.0.0",
+    "@opentelemetry/api": "^1.9.1",
+    "@opentelemetry/instrumentation-http": "^0.221.0",
+    "@opentelemetry/instrumentation-pino": "^0.67.0",
+    "@opentelemetry/sdk-node": "^0.221.0",
+    "@opentelemetry/sdk-trace": "^2.10.0",
+    "@prometheus-io/client": "^0.16.1",
     "@types/better-sqlite3": "^7.6.10",
     "@types/lodash": "^4.14.194",
     "@types/mustache": "^4.2.5",
@@ -66,7 +72,7 @@
     "agentkeepalive": "^4.5.0",
     "async-lock": "^1.4.1",
     "audio-decode": "^2.2.2",
-    "axios": "^1.9.0",
+    "axios": "^1.19.0",
     "axios-retry": "^4.5.0",
     "better-sqlite3": "^12.4.1",
     "bullmq": "^5.48.1",
@@ -115,6 +121,7 @@
     "shell-quote": "^1.8.3",
     "sqlite3": "^5.1.7",
     "swagger-ui-express": "^4.1.4",
+    "tapable": "^2.2.2",
     "ulid": "^2.3.0",
     "undici": "^7.16.0",
     "uniqid": "^5.4.0",
@@ -133,7 +140,7 @@
     "ws": "^8.18.0",
     "puppeteer": "^24.31.0",
     "whatwg-url": "13.0.0",
-    "axios": "^1.9.0",
+    "axios": "^1.19.0",
     "whatsapp-rust-bridge": "npm:@devlikeapro/whatsapp-rust-bridge@0.5.2"
   },
   "devDependencies": {
@@ -205,5 +212,5 @@
       }
     ]
   },
-  "packageManager": "yarn@4.9.2"
+  "packageManager": "yarn@4.17.1"
 }

src/api/chatting.controller.ts

@@ -9,7 +9,7 @@ import {
   UsePipes,
   ValidationPipe,
 } from '@nestjs/common';
-import { ApiOperation, ApiSecurity, ApiTags } from '@nestjs/swagger';
+import { ApiBody, ApiOperation, ApiSecurity, ApiTags } from '@nestjs/swagger';
 import { WAHAValidationPipe } from '@waha/nestjs/pipes/WAHAValidationPipe';
 import {
   GetChatMessagesFilter,
@@ -37,6 +37,7 @@ import {
   MessageReactionRequest,
   MessageReplyRequest,
   MessageStarRequest,
+  MessageStickerRequest,
   MessageTextQuery,
   MessageTextRequest,
   MessageVideoRequest,
@@ -145,6 +146,46 @@ export class ChattingController {
     return whatsapp.sendVideo(request);
   }
 
+  @Post('/sendSticker')
+  @ApiOperation({
+    summary: 'Send a sticker',
+    description:
+      'The image will not be converted. It must already be in WebP format. PNG and JPEG are not supported.',
+  })
+  @ApiBody({
+    type: MessageStickerRequest,
+    examples: {
+      url: {
+        summary: 'From URL',
+        value: {
+          session: 'default',
+          chatId: '11111111111@c.us',
+          reply_to: null,
+          file: {
+            url: 'https://www.gstatic.com/webp/gallery/1.webp',
+          },
+        },
+      },
+      base64webp: {
+        summary: 'From base64 WebP',
+        value: {
+          session: 'default',
+          chatId: '11111111111@c.us',
+          reply_to: null,
+          file: {
+            mimetype: 'image/webp',
+            data: 'your-base64-data-of-webp',
+          },
+        },
+      },
+    },
+  })
+  @CheckPolicies(CanSession(Action.Send, FromBody('session')))
+  async sendSticker(@Body() request: MessageStickerRequest) {
+    const whatsapp = await this.manager.getWorkingSession(request.session);
+    return whatsapp.sendSticker(request);
+  }
+
   @Post('/send/link-custom-preview')
   @ApiOperation({
     summary: 'Send a text message with a CUSTOM link preview.',

src/api/groups.controller.ts

@@ -32,12 +32,16 @@ import {
   CreateGroupRequest,
   DescriptionRequest,
   GroupField,
+  GroupJoinRequest,
+  GroupJoinRequestResult,
   GroupParticipant,
   GroupsListFields,
   GroupsPaginationParams,
   JoinGroupRequest,
   JoinGroupResponse,
   ParticipantsRequest,
+  SettingsMemberAddMode,
+  SettingsMembershipApproval,
   SettingsSecurityChangeInfo,
   SubjectRequest,
 } from '../structures/groups.dto';
@@ -309,6 +313,121 @@ export class GroupsController {
     return session.getMessagesAdminsOnly(id);
   }
 
+  @Put(':id/settings/security/member-add-mode')
+  @SessionApiParam
+  @GroupIdApiParam
+  @CheckPolicies(CanSession(Action.Send, FromParam('session')))
+  @ApiOperation({
+    summary: 'Update settings - who can add new members',
+    description:
+      'Updates the group settings for who can add new members to the group - all members or admins only.',
+  })
+  setMemberAddMode(
+    @WorkingSessionParam session: WhatsappSession,
+    @Param('id') id: string,
+    @Body() request: SettingsMemberAddMode,
+  ) {
+    return session.setMemberAddMode(id, request.membersCanAddNewMember);
+  }
+
+  @Get(':id/settings/security/member-add-mode')
+  @SessionApiParam
+  @GroupIdApiParam
+  @CheckPolicies(CanSession(Action.Read, FromParam('session')))
+  @ApiOperation({
+    summary: 'Get settings - who can add new members',
+    description:
+      'The group settings for who can add new members to the group - all members or admins only.',
+  })
+  getMemberAddMode(
+    @WorkingSessionParam session: WhatsappSession,
+    @Param('id') id: string,
+  ): Promise<SettingsMemberAddMode> {
+    return session.getMemberAddMode(id);
+  }
+
+  @Put(':id/settings/security/membership-approval')
+  @SessionApiParam
+  @GroupIdApiParam
+  @CheckPolicies(CanSession(Action.Send, FromParam('session')))
+  @ApiOperation({
+    summary: 'Update settings - approve new members',
+    description:
+      'Enables or disables admin approval for users requesting to join the group.',
+  })
+  setMembershipApprovalMode(
+    @WorkingSessionParam session: WhatsappSession,
+    @Param('id') id: string,
+    @Body() request: SettingsMembershipApproval,
+  ): Promise<boolean> {
+    return session.setMembershipApprovalMode(
+      id,
+      request.newMembersApprovalRequired,
+    );
+  }
+
+  @Get(':id/settings/security/membership-approval')
+  @SessionApiParam
+  @GroupIdApiParam
+  @CheckPolicies(CanSession(Action.Read, FromParam('session')))
+  @ApiOperation({
+    summary: 'Get settings - approve new members',
+    description:
+      'Returns whether admin approval is required for users requesting to join the group.',
+  })
+  getMembershipApprovalMode(
+    @WorkingSessionParam session: WhatsappSession,
+    @Param('id') id: string,
+  ): Promise<SettingsMembershipApproval> {
+    return session.getMembershipApprovalMode(id);
+  }
+
+  @Get(':id/participants/join-requests')
+  @SessionApiParam
+  @GroupIdApiParam
+  @CheckPolicies(CanSession(Action.Read, FromParam('session')))
+  @ApiOperation({
+    summary: 'Get pending requests to join the group',
+  })
+  getGroupJoinRequests(
+    @WorkingSessionParam session: WhatsappSession,
+    @Param('id') id: string,
+  ): Promise<GroupJoinRequest[]> {
+    return session.getGroupJoinRequests(id);
+  }
+
+  @Post(':id/participants/join-requests/approve')
+  @HttpCode(HttpStatus.OK)
+  @SessionApiParam
+  @GroupIdApiParam
+  @CheckPolicies(CanSession(Action.Send, FromParam('session')))
+  @ApiOperation({
+    summary: 'Approve pending requests to join the group',
+  })
+  approveGroupJoinRequests(
+    @WorkingSessionParam session: WhatsappSession,
+    @Param('id') id: string,
+    @Body() request: ParticipantsRequest,
+  ): Promise<GroupJoinRequestResult[]> {
+    return session.approveGroupJoinRequests(id, request);
+  }
+
+  @Post(':id/participants/join-requests/reject')
+  @HttpCode(HttpStatus.OK)
+  @SessionApiParam
+  @GroupIdApiParam
+  @CheckPolicies(CanSession(Action.Send, FromParam('session')))
+  @ApiOperation({
+    summary: 'Reject pending requests to join the group',
+  })
+  rejectGroupJoinRequests(
+    @WorkingSessionParam session: WhatsappSession,
+    @Param('id') id: string,
+    @Body() request: ParticipantsRequest,
+  ): Promise<GroupJoinRequestResult[]> {
+    return session.rejectGroupJoinRequests(id, request);
+  }
+
   @Get(':id/invite-code')
   @SessionApiParam
   @GroupIdApiParam

src/api/sessions.controller.ts

@@ -34,11 +34,14 @@ import { WhatsappSession } from '../core/abc/session.abc';
 import {
   ListSessionsQuery,
   MeInfo,
+  MessageCappingData,
+  ReachoutTimelockData,
   SessionCreateRequest,
   SessionDTO,
   SessionExpand,
   SessionInfo,
   SessionInfoQuery,
+  SessionLogoutRequest,
   SessionUpdateRequest,
 } from '../structures/sessions.dto';
 import { SessionExamples } from './sessions.examples';
@@ -98,6 +101,39 @@ class SessionsController {
     return this.sessionService.getSessionMe(session);
   }
 
+  @Get(':session/capping')
+  @SessionApiParam
+  @ApiOperation({
+    summary: 'Fetch the account new-chat message capping (per-cycle quota)',
+    description:
+      'Fetch a fresh new-chat message capping (quota) state from WhatsApp. ' +
+      'The same value is also available under me.messageCapping in the session ' +
+      'info, and changes are pushed through the session.status event.',
+  })
+  @CheckPolicies(CanSession(Action.Read, FromParam('session')))
+  fetchMessageCapping(
+    @SessionParam session: WhatsappSession,
+  ): Promise<MessageCappingData> {
+    return session.fetchMessageCapping();
+  }
+
+  @Get(':session/timelock')
+  @SessionApiParam
+  @ApiOperation({
+    summary: 'Fetch the account reachout timelock state',
+    description:
+      'Fetch a fresh reachout timelock state from WhatsApp - the restriction ' +
+      'behind "server returned error 463" when messaging new contacts. ' +
+      'The same value is also available under me.reachoutTimelock in the session ' +
+      'info, and changes are pushed through the session.status event.',
+  })
+  @CheckPolicies(CanSession(Action.Read, FromParam('session')))
+  fetchReachoutTimelock(
+    @SessionParam session: WhatsappSession,
+  ): Promise<ReachoutTimelockData> {
+    return session.fetchReachoutTimelock();
+  }
+
   @Post('')
   @ApiOperation({
     summary: 'Create a session',
@@ -168,10 +204,14 @@ class SessionsController {
     summary: 'Logout from the session',
     description: 'Logout the session, restart a session if it was not STOPPED',
   })
+  @ApiBody({ type: SessionLogoutRequest, required: false })
   @CheckPolicies(CanSession(Action.Control, FromParam('session')))
   @UsePipes(new WAHAValidationPipe())
-  async logout(@Param('session') name: string): Promise<SessionDTO> {
-    return this.sessionService.logoutSession(name);
+  async logout(
+    @Param('session') name: string,
+    @Body() request?: SessionLogoutRequest,
+  ): Promise<SessionDTO> {
+    return this.sessionService.logoutSession(name, request);
   }
 
   @Post(':session/restart')

src/api/sessions.examples.ts

@@ -1,4 +1,4 @@
-import { AppName } from '@waha/apps/app_sdk/apps/name';
+import { AppName } from '@waha/apps/app_sdk/apps/apps';
 
 export const SessionExamples = {
   basic: {

src/api/websocket.gateway.core.ts

@@ -97,7 +97,7 @@ export class WebsocketGatewayCore
     }
 
     this.logger.debug(`New client connected: ${request.url} - ${socket.id}`);
-    const events: WAHAEvents[] = params.events;
+    const events = params.events as WAHAEvents[];
     this.logger.debug(
       `Client connected to session: '${session}', events: ${events}, ${socket.id}`,
     );
@@ -131,8 +131,13 @@ export class WebsocketGatewayCore
     const paramsEvents = query.getAll('events');
     const eventsRaw = paramsEvents.length > 0 ? paramsEvents : ['*'];
     const eventsList = eventsRaw.flatMap((value) => value.split(','));
-    const events = this.eventUnmask.unmask(eventsList);
-    return { session, events };
+    const result = this.eventUnmask.unmask(eventsList);
+    if (result.unknown.length > 0) {
+      this.logger.warn(
+        `Ignoring unknown websocket events: ${result.unknown.join(', ')}`,
+      );
+    }
+    return { session, events: result.events };
   }
 
   handleDisconnect(socket: WebSocket): any {

src/apps/app_sdk/api/apps.controller.ts

@@ -14,7 +14,9 @@ import {
   UseGuards,
   UsePipes,
 } from '@nestjs/common';
-import { ApiOperation, ApiSecurity, ApiTags } from '@nestjs/swagger';
+import { ApiOperation, ApiParam, ApiSecurity, ApiTags } from '@nestjs/swagger';
+import { AppName } from '@waha/apps/app_sdk/apps/apps';
+import { UniqueAppResolver } from '@waha/apps/app_sdk/services/UniqueAppResolver';
 import {
   AppsService,
   IAppsService,
@@ -26,12 +28,13 @@ import {
   CanServer,
   CanSession,
   FromBody,
+  FromParam,
   FromQuery,
 } from '@waha/core/auth/policies';
 import { Action, session as SessionName } from '@waha/core/auth/casl.types';
 import { WAHAValidationPipe } from '@waha/nestjs/pipes/WAHAValidationPipe';
 
-import { APPS } from '../apps/definition';
+import { GetApp } from '../apps/registry';
 import { App } from '../dto/app.dto';
 import { ListAppsQuery } from '../dto/query.dto';
 
@@ -44,6 +47,7 @@ export class AppsController {
     @Inject(AppsService)
     private appsService: IAppsService,
     private manager: SessionManager,
+    private resolver: UniqueAppResolver,
   ) {}
 
   @Get('/')
@@ -63,7 +67,11 @@ export class AppsController {
   async create(@Body() app: App): Promise<App> {
     const result = await this.appsService.create(this.manager, app);
     const isRunning = this.manager.isRunning(app.session);
-    if (isRunning && app.enabled && APPS[app.app].restartOnChange) {
+    if (
+      isRunning &&
+      app.enabled &&
+      GetApp(app.app)?.definition.restartOnChange
+    ) {
       await this.manager.restart(app.session);
     }
     return result;
@@ -114,7 +122,7 @@ export class AppsController {
 
     const result = await this.appsService.upsert(this.manager, app);
     const isRunning = this.manager.isRunning(result.session);
-    if (isRunning && APPS[result.app].restartOnChange) {
+    if (isRunning && GetApp(result.app)?.definition.restartOnChange) {
       await this.manager.restart(result.session);
     }
     return result;
@@ -134,8 +142,44 @@ export class AppsController {
     }
     const app = await this.appsService.delete(this.manager, id);
     const isRunning = this.manager.isRunning(app.session);
-    if (isRunning && APPS[app.app].restartOnChange) {
+    if (isRunning && GetApp(app.app)?.definition.restartOnChange) {
       await this.manager.restart(app.session);
     }
   }
+
+  @Post('/:id/purge')
+  @ApiOperation({
+    summary: 'Purge app storage by app ID',
+    description:
+      "Delete the app's stored data (database rows, caches) while keeping the app configured.",
+  })
+  @CheckPolicies(CanServer(Action.Retrieve))
+  @UsePipes(new WAHAValidationPipe())
+  async purge(@Param('id') id: string, @Req() req: any): Promise<App> {
+    const existing = await this.appsService.get(this.manager, id);
+    if (!existing) {
+      throw new NotFoundException(`App '${id}' not found`);
+    }
+    if (!req.ability?.can(Action.App, new SessionName(existing.session))) {
+      throw new ForbiddenException();
+    }
+    return await this.appsService.purge(this.manager, id);
+  }
+
+  @Post('/:app/:session/purge')
+  @ApiOperation({
+    summary: 'Purge app storage by app name and session',
+    description:
+      "Delete the unique app's stored data for the session. The app must be enabled.",
+  })
+  @ApiParam({ name: 'app', enum: AppName })
+  @CheckPolicies(CanSession(Action.App, FromParam('session')))
+  @UsePipes(new WAHAValidationPipe())
+  async purgeUniqueApp(
+    @Param('app') appName: string,
+    @Param('session') session: string,
+  ): Promise<App> {
+    const app = await this.resolver.getEnabledApp(session, appName);
+    return await this.appsService.purge(this.manager, app.id);
+  }
 }

src/apps/app_sdk/api/tags.ts

@@ -0,0 +1,28 @@
+import { AppApiTag } from '@waha/apps/app_sdk/apps/openapi';
+import { AppRuntimeConfig } from '@waha/apps/app_sdk/apps/AppRuntime';
+import { GetApps } from '@waha/apps/app_sdk/apps/registry';
+
+export interface ApiTag {
+  name: string;
+  description: string;
+}
+
+/**
+ * OpenAPI tags for all registered apps - one "🧩 Apps: {Title}" tag per app,
+ * so app-specific endpoints get their own section in Swagger.
+ * Includes disabled apps too (only their openapi metadata is used) - some app
+ * controllers are served even when apps are disabled ('disabledControllers');
+ * their description is prefixed with "DISABLED" to make the state visible.
+ */
+export function GetAppsApiTags(): ApiTag[] {
+  return GetApps().map((app) => {
+    const enabled = AppRuntimeConfig.HasApp(app.name);
+    const description = enabled
+      ? app.openapi.description
+      : `DISABLED - ${app.openapi.description}`;
+    return {
+      name: AppApiTag(app.openapi),
+      description: description,
+    };
+  });
+}

src/apps/app_sdk/apps/AppRuntime.ts

@@ -1,15 +1,15 @@
 import { AppEnv } from '@waha/apps/app_sdk/env';
-import { AppDefinition, APPS } from '@waha/apps/app_sdk/apps/definition';
-import { AppName } from '@waha/apps/app_sdk/apps/name';
+import { AppModule } from '@waha/apps/app_sdk/apps/definition';
+import { GetApps } from '@waha/apps/app_sdk/apps/registry';
 
 class AppRuntimeConfigC {
-  private constructor(private apps: AppDefinition[] | null) {}
+  private constructor(private apps: AppModule[] | null) {}
 
   static FromEnv(env: typeof AppEnv) {
     if (!env.enabled) {
       return new AppRuntimeConfigC(null);
     }
-    let apps = Object.values(APPS);
+    let apps: AppModule[] = GetApps();
     // Include
     if (env.on && env.on.length > 0) {
       apps = apps.filter((app) => env.on!.includes(app.name));
@@ -30,18 +30,18 @@ class AppRuntimeConfigC {
   }
 
   GetAppsWithMigration() {
-    return this.GetApps().filter((app) => app.migrations);
+    return this.GetApps().filter((app) => app.definition.migrations);
   }
 
   GetAppsRequiringPlainKey() {
-    return this.GetApps().filter((app) => app.plainkey);
+    return this.GetApps().filter((app) => app.definition.plainkey);
   }
 
   GetAppsRequiringQueue() {
-    return this.GetApps().filter((app) => app.queue);
+    return this.GetApps().filter((app) => app.definition.queue);
   }
 
-  HasApp(name: AppName) {
+  HasApp(name: string) {
     return this.GetApps().some((app) => app.name === name);
   }
 

src/apps/app_sdk/apps/apps.ts

@@ -0,0 +1,28 @@
+import { Type } from '@nestjs/common';
+import { BrazilianPhoneNumbersAppConfig } from '@waha/apps/brazilian-phone-numbers/dto/config.dto';
+import { CallsAppConfig } from '@waha/apps/calls/dto/config.dto';
+import { ChatWootAppConfig } from '@waha/apps/chatwoot/dto/config.dto';
+import { McpAppConfig } from '@waha/apps/mcp/dto/config.dto';
+
+export enum AppName {
+  chatwoot = 'chatwoot',
+  calls = 'calls',
+  mcp = 'mcp',
+  brazilianPhoneNumbers = 'brazilian-phone-numbers',
+}
+
+/**
+ * DTO classes used to transform and validate App.config, by app name.
+ * Kept separate from the registry so DTOs (imported by core structures) can resolve config classes
+ * without pulling in every app module (controllers, services, queues) - that creates require cycles.
+ */
+export const AppConfigClasses: Record<AppName, Type<any>> = {
+  [AppName.brazilianPhoneNumbers]: BrazilianPhoneNumbersAppConfig,
+  [AppName.calls]: CallsAppConfig,
+  [AppName.chatwoot]: ChatWootAppConfig,
+  [AppName.mcp]: McpAppConfig,
+};
+
+export function GetAppConfigClass(name: AppName): Type<any> {
+  return AppConfigClasses[name] ?? Object;
+}

src/apps/app_sdk/apps/definition.ts

@@ -1,8 +1,10 @@
-import { AppName } from '@waha/apps/app_sdk/apps/name';
+import { Type } from '@nestjs/common';
+import { AppName } from '@waha/apps/app_sdk/apps/apps';
+import { AppOpenAPI } from '@waha/apps/app_sdk/apps/openapi';
+import { GetApp } from '@waha/apps/app_sdk/apps/registry';
+import { IAppService } from '@waha/apps/app_sdk/services/IAppService';
 
 export interface AppDefinition {
-  // App name
-  name: AppName;
   // If app requires WAHA_API_KEY_PLAIN to work
   plainkey: boolean;
   // If app requires queue to work
@@ -11,29 +13,51 @@ export interface AppDefinition {
   migrations: boolean;
   // If adding, updating, or removing this app requires a session restart
   restartOnChange: boolean;
+  // If only one instance of this app is allowed per session
+  unique: boolean;
 }
 
-// All Apps
-export const APPS: Record<AppName, AppDefinition> = {
-  [AppName.calls]: {
-    name: AppName.calls,
-    plainkey: false,
-    queue: false,
-    migrations: false,
-    restartOnChange: true,
-  },
-  [AppName.chatwoot]: {
-    name: AppName.chatwoot,
-    plainkey: true,
-    queue: true,
-    migrations: true,
-    restartOnChange: true,
-  },
-  [AppName.mcp]: {
-    name: AppName.mcp,
-    plainkey: false,
-    queue: false,
-    migrations: false,
-    restartOnChange: false,
-  },
-};
+// NestJS module parts, included when the app is enabled in runtime configuration
+export interface AppNestJS {
+  imports: any[];
+  controllers: any[];
+  providers: any[];
+}
+
+/**
+ * Contract for the default export of 'src/apps/<name>/app.module.ts'.
+ * Each app self-describes with this and gets listed in the registry ('apps/registry.ts').
+ */
+export interface AppModule {
+  // App name
+  name: AppName;
+  // OpenAPI metadata (tag title, description) from 'src/apps/<name>/openapi.ts'
+  openapi: AppOpenAPI;
+  // Static app metadata (requirements, behavior flags)
+  definition: AppDefinition;
+  // NestJS module parts
+  nestjs: AppNestJS;
+  // Service implementing app lifecycle hooks; must also be listed in 'nestjs.providers'
+  Service: Type<IAppService>;
+}
+
+export function isUniqueApp(name: AppName): boolean {
+  return GetApp(name)?.definition.unique === true;
+}
+
+// Returns the first unique AppName that appears more than once in the list, or null
+export function findDuplicateUniqueApp(
+  apps: Array<{ app: AppName }>,
+): AppName | null {
+  const seen = new Set<AppName>();
+  for (const app of apps) {
+    if (!isUniqueApp(app.app)) {
+      continue;
+    }
+    if (seen.has(app.app)) {
+      return app.app;
+    }
+    seen.add(app.app);
+  }
+  return null;
+}

src/apps/app_sdk/apps/name.ts

@@ -1,5 +0,0 @@
-export enum AppName {
-  chatwoot = 'chatwoot',
-  calls = 'calls',
-  mcp = 'mcp',
-}

src/apps/app_sdk/apps/openapi.ts

@@ -0,0 +1,14 @@
+/**
+ * OpenAPI metadata for an app, defined inline in the app's AppModule ('openapi' field).
+ * The registry applies the "🧩 Apps: {Title}" tag to every controller in 'nestjs.controllers',
+ * so app controllers do not declare @ApiTags themselves - a new app only touches its own folder.
+ */
+export interface AppOpenAPI {
+  title: string;
+  description: string;
+}
+
+// OpenAPI tag for app-specific endpoints - "🧩 Apps: {Title}"
+export function AppApiTag(openapi: AppOpenAPI): string {
+  return `🧩 Apps: ${openapi.title}`;
+}

src/apps/app_sdk/apps/registry.ts

@@ -0,0 +1,34 @@
+import { ApiTags } from '@nestjs/swagger';
+import { AppModule } from '@waha/apps/app_sdk/apps/definition';
+import { AppApiTag } from '@waha/apps/app_sdk/apps/openapi';
+import BrazilianPhoneNumbersAppModule from '@waha/apps/brazilian-phone-numbers/app.module';
+import CallsAppModule from '@waha/apps/calls/app.module';
+import ChatWootAppModule from '@waha/apps/chatwoot/app.module';
+import McpAppModule from '@waha/apps/mcp/app.module';
+
+/**
+ * Registry of available apps.
+ * Add new apps here - the rest of app_sdk works off this list.
+ */
+const APPS: AppModule[] = [
+  BrazilianPhoneNumbersAppModule,
+  CallsAppModule,
+  ChatWootAppModule,
+  McpAppModule,
+];
+
+// Tag every app controller with the app's OpenAPI tag ("🧩 Apps: {Title}") from AppModule.openapi,
+// so controllers do not declare @ApiTags themselves (they cannot import their own app.module - require cycle).
+for (const app of APPS) {
+  for (const controller of app.nestjs.controllers) {
+    ApiTags(AppApiTag(app.openapi))(controller);
+  }
+}
+
+export function GetApps(): AppModule[] {
+  return APPS;
+}
+
+export function GetApp(name: string): AppModule | undefined {
+  return APPS.find((app) => app.name === name);
+}

src/apps/app_sdk/dto/app.dto.ts

@@ -1,6 +1,3 @@
-import { ChatWootAppConfig } from '@waha/apps/chatwoot/dto/config.dto';
-import { CallsAppConfig } from '@waha/apps/calls/dto/config.dto';
-import { McpAppConfig } from '@waha/apps/mcp/dto/config.dto';
 import { Type } from 'class-transformer';
 import {
   IsBoolean,
@@ -10,15 +7,13 @@ import {
   ValidateNested,
 } from 'class-validator';
 import { ApiExtraModels, ApiProperty } from '@nestjs/swagger';
-import { AppName } from '@waha/apps/app_sdk/apps/name';
+import {
+  AppConfigClasses,
+  AppName,
+  GetAppConfigClass,
+} from '@waha/apps/app_sdk/apps/apps';
 
-export type AllowedAppConfig =
-  | ChatWootAppConfig
-  | CallsAppConfig
-  | McpAppConfig;
-
-@ApiExtraModels(ChatWootAppConfig, CallsAppConfig, McpAppConfig)
-export class App<T extends AllowedAppConfig = any> {
+export class App<T = any> {
   @IsString()
   id: string;
 
@@ -41,36 +36,14 @@ export class App<T extends AllowedAppConfig = any> {
 
   @ValidateNested()
   @Type((options) => {
-    if (options && options.object && options.object.app) {
-      switch (options.object.app) {
-        case AppName.chatwoot:
-          return ChatWootAppConfig;
-        case AppName.calls:
-          return CallsAppConfig;
-        case AppName.mcp:
-          return McpAppConfig;
-        default:
-          return Object;
-      }
+    const name = options?.object?.app;
+    if (!name) {
+      return Object;
     }
-    return Object;
+    return GetAppConfigClass(name);
   })
   config: T;
 }
 
-export class ChatWootAppDto extends App<ChatWootAppConfig> {
-  @Type(() => ChatWootAppConfig)
-  config: ChatWootAppConfig;
-}
-
-export class CallsAppDto extends App<CallsAppConfig> {
-  @Type(() => CallsAppConfig)
-  config: CallsAppConfig;
-}
-
-export class McpAppDto extends App<McpAppConfig> {
-  @Type(() => McpAppConfig)
-  config: McpAppConfig;
-}
-
-export type AppDto = ChatWootAppDto | CallsAppDto | McpAppDto;
+// Swagger models for app configs
+ApiExtraModels(...Object.values(AppConfigClasses))(App);

src/apps/app_sdk/env.ts

@@ -1,9 +1,9 @@
 import { parseBool } from '@waha/helpers';
-import { APPS } from '@waha/apps/app_sdk/apps/definition';
+import { GetApps } from '@waha/apps/app_sdk/apps/registry';
 
 // Apps that don't require queue (Redis) - derived from AppDefinition
-const IN_MEMORY_APPS = Object.values(APPS)
-  .filter((app) => !app.queue)
+const IN_MEMORY_APPS = GetApps()
+  .filter((app) => !app.definition.queue)
   .map((app) => app.name);
 
 function parseCommaSeparatedList(value: string | undefined): string[] {

src/apps/app_sdk/services/AppsDisabledService.ts

@@ -41,6 +41,14 @@ export class AppsDisabledService implements IAppsService {
     throw new AppsIsDisabledError();
   }
 
+  async purge(manager: SessionManager, appId: string): Promise<App> {
+    throw new AppsIsDisabledError();
+  }
+
+  async purgeBySession(manager: SessionManager, session: string) {
+    return;
+  }
+
   async removeBySession(manager: SessionManager, session: string) {
     return;
   }

src/apps/app_sdk/services/AppsEnabledService.ts

@@ -1,15 +1,12 @@
 import {
   Injectable,
   NotFoundException,
-  Optional,
   UnprocessableEntityException,
 } from '@nestjs/common';
+import { ModuleRef } from '@nestjs/core';
 import { migrate } from '@waha/apps/app_sdk/migrations';
 import { IAppService } from '@waha/apps/app_sdk/services/IAppService';
 import { IAppsService } from '@waha/apps/app_sdk/services/IAppsService';
-import { ChatWootAppService } from '@waha/apps/chatwoot/services/ChatWootAppService';
-import { CallsAppService } from '@waha/apps/calls/services/CallsAppService';
-import { McpAppService } from '@waha/apps/mcp/services/McpAppService';
 import { DataStore } from '@waha/core/abc/DataStore';
 import { SessionManager } from '@waha/core/abc/manager.abc';
 import { WhatsappSession } from '@waha/core/abc/session.abc';
@@ -19,8 +16,12 @@ import { InjectPinoLogger, PinoLogger } from 'nestjs-pino';
 
 import { App } from '../dto/app.dto';
 import { AppRepository } from '../storage/AppRepository';
-import { AppName } from '@waha/apps/app_sdk/apps/name';
 import { AppRuntimeConfig } from '@waha/apps/app_sdk/apps/AppRuntime';
+import {
+  findDuplicateUniqueApp,
+  isUniqueApp,
+} from '@waha/apps/app_sdk/apps/definition';
+import { GetApp } from '@waha/apps/app_sdk/apps/registry';
 
 export class AppDisableError extends UnprocessableEntityException {
   constructor(app: string) {
@@ -30,14 +31,21 @@ export class AppDisableError extends UnprocessableEntityException {
   }
 }
 
+export class AppUniquePerSessionError extends UnprocessableEntityException {
+  constructor(app: string, session: string, existingAppId: string) {
+    super(
+      `Only one '${app}' app is allowed per session. ` +
+        `Session '${session}' already has a '${app}' app with ID '${existingAppId}'.`,
+    );
+  }
+}
+
 @Injectable()
 export class AppsEnabledService implements IAppsService {
   constructor(
     @InjectPinoLogger('AppsService')
     protected logger: PinoLogger,
-    @Optional() protected readonly chatwootService: ChatWootAppService,
-    @Optional() protected readonly callsAppService: CallsAppService,
-    @Optional() protected readonly mcpAppService: McpAppService,
+    private readonly moduleRef: ModuleRef,
   ) {}
 
   async list(manager: SessionManager, session: string): Promise<App[]> {
@@ -64,31 +72,17 @@ export class AppsEnabledService implements IAppsService {
       throw new Error(`App with ID '${app.id}' already exists.`);
     }
 
-    let existingApps: App[] = [];
-    if (app.app === AppName.chatwoot || app.app === AppName.calls) {
-      existingApps = await repo.getAllBySession(app.session);
-    }
-    // Validate only one Chatwoot app per session
-    if (app.app === AppName.chatwoot) {
-      const existingChatwootApp = existingApps.find(
-        (existingApp) => existingApp.app === AppName.chatwoot,
+    // Validate only one instance of a unique app per session
+    if (isUniqueApp(app.app)) {
+      const existingApps = await repo.getAllBySession(app.session);
+      const duplicateApp = existingApps.find(
+        (existingApp) => existingApp.app === app.app,
       );
-
-      if (existingChatwootApp) {
-        throw new Error(
-          `Only one Chatwoot app is allowed per session. Session '${app.session}' already has a Chatwoot app with ID '${existingChatwootApp.id}'.`,
-        );
-      }
-    }
-    // Validate only one Calls app per session
-    if (app.app === AppName.calls) {
-      const existingCallsApp = existingApps.find(
-        (existingApp) => existingApp.app === AppName.calls,
-      );
-
-      if (existingCallsApp) {
-        throw new Error(
-          `Only one Calls app is allowed per session. Session '${app.session}' already has a Calls app with ID '${existingCallsApp.id}'.`,
+      if (duplicateApp) {
+        throw new AppUniquePerSessionError(
+          app.app,
+          app.session,
+          duplicateApp.id,
         );
       }
     }
@@ -192,6 +186,35 @@ export class AppsEnabledService implements IAppsService {
     return app;
   }
 
+  async purge(manager: SessionManager, appId: string): Promise<App> {
+    const knex = manager.store.getWAHADatabase();
+    const repo = new AppRepository(knex);
+    const app = await repo.getById(appId);
+    if (!app) {
+      throw new NotFoundException(`App '${appId}' not found`);
+    }
+    const service = this.getAppService(app);
+    if (!service) {
+      throw new AppDisableError(app.app);
+    }
+    await service.purge(manager, app);
+    delete app.pk;
+    return app;
+  }
+
+  async purgeBySession(manager: SessionManager, session: string) {
+    const knex = manager.store.getWAHADatabase();
+    const repo = new AppRepository(knex);
+    const apps = await repo.getAllBySession(session);
+    for (const app of apps) {
+      const service = this.getAppService(app);
+      if (!service) {
+        continue;
+      }
+      await service.purge(manager, app);
+    }
+  }
+
   async removeBySession(manager: SessionManager, session: string) {
     const knex = manager.store.getWAHADatabase();
     const repo = new AppRepository(knex);
@@ -212,6 +235,10 @@ export class AppsEnabledService implements IAppsService {
       if (!service && !AppRuntimeConfig.HasApp(app.app)) {
         throw new AppDisableError(app.app);
       }
+      const plugins = service.plugins(app, session, store);
+      for (const options of plugins) {
+        session.plugins.add(options, app.id);
+      }
       service.beforeSessionStart(app, session);
     }
   }
@@ -234,6 +261,15 @@ export class AppsEnabledService implements IAppsService {
     session: string,
     apps: App[],
   ): Promise<void> {
+    // Reject duplicate unique apps in the payload before any writes,
+    // otherwise the by-type matching below binds them to the same app
+    const duplicateUniqueApp = findDuplicateUniqueApp(apps);
+    if (duplicateUniqueApp !== null) {
+      throw new UnprocessableEntityException(
+        `Only one '${duplicateUniqueApp}' app is allowed per session - remove duplicate entries from 'apps'.`,
+      );
+    }
+
     const existing = await this.list(manager, session);
     const ids = new Set<string>();
 
@@ -266,15 +302,15 @@ export class AppsEnabledService implements IAppsService {
   }
 
   private getAppService(app: App): IAppService | null {
-    switch (app.app) {
-      case AppName.chatwoot:
-        return this.chatwootService;
-      case AppName.calls:
-        return this.callsAppService;
-      case AppName.mcp:
-        return this.mcpAppService;
-      default:
-        throw new Error(`App '${app.app}' not supported`);
+    const appModule = GetApp(app.app);
+    if (!appModule) {
+      throw new Error(`App '${app.app}' not supported`);
+    }
+    try {
+      return this.moduleRef.get(appModule.Service, { strict: false });
+    } catch {
+      // Provider is not registered - app is disabled via WAHA_APPS_ON / WAHA_APPS_OFF
+      return null;
     }
   }
 

src/apps/app_sdk/services/IAppService.ts

@@ -1,6 +1,8 @@
 import { App } from '@waha/apps/app_sdk/dto/app.dto';
+import { DataStore } from '@waha/core/abc/DataStore';
 import { SessionManager } from '@waha/core/abc/manager.abc';
 import { WhatsappSession } from '@waha/core/abc/session.abc';
+import { PluginOptions } from '@waha/core/abc/session.plugin';
 
 /**
  * Exact App service
@@ -42,6 +44,12 @@ export interface IAppService {
 
   beforeDeleted(manager: SessionManager, app: App): Promise<void>;
 
+  /**
+   * Deletes the app's stored data (database rows, caches) while keeping the app configured.
+   * Apps without storage implement it as a no-op.
+   */
+  purge(manager: SessionManager, app: App): Promise<void>;
+
   /**
    * Called for each app before a bulk session deletion removes all app records.
    * Use this to clean up external resources tied to the app (e.g. API keys).
@@ -54,6 +62,17 @@ export interface IAppService {
    */
   enrich(manager: SessionManager, app: App): Promise<void>;
 
+  /**
+   * Session plugins contributed by this app. AppsEnabledService registers them with the app id,
+   * and the session manager attaches their hooks and events before session.start().
+   * store - the server data store, for apps whose plugins persist data.
+   */
+  plugins(
+    app: App,
+    session: WhatsappSession,
+    store?: DataStore,
+  ): PluginOptions[];
+
   beforeSessionStart(app: App, session: WhatsappSession): void;
 
   afterSessionStart(app: App, session: WhatsappSession): void;

src/apps/app_sdk/services/IAppsService.ts

@@ -17,6 +17,10 @@ export interface IAppsService {
 
   delete(manager: SessionManager, appId: string): Promise<App>;
 
+  purge(manager: SessionManager, appId: string): Promise<App>;
+
+  purgeBySession(manager: SessionManager, session: string): Promise<void>;
+
   removeBySession(manager: SessionManager, session: string): Promise<void>;
 
   beforeSessionStart(session: WhatsappSession, store: DataStore): Promise<void>;

src/apps/app_sdk/services/UniqueAppResolver.ts

@@ -0,0 +1,55 @@
+import { Injectable, NotFoundException } from '@nestjs/common';
+import { AppRepository } from '@waha/apps/app_sdk/storage/AppRepository';
+import { AppDB } from '@waha/apps/app_sdk/storage/types';
+import { SessionManager } from '@waha/core/abc/manager.abc';
+import { SessionPlugin } from '@waha/core/abc/session.plugin';
+
+/**
+ * Resolves the single instance of a unique-per-session app ('definition.unique') by session name,
+ * so app controllers can expose session-keyed routes ('api/apps/{app}/{session}/...') instead of app-id ones.
+ * Uniqueness is guaranteed at write time by AppsEnabledService, so the first enabled row is the instance.
+ * Must not import 'apps/registry.ts' or 'apps/definition.ts' - controllers import this resolver,
+ * and the registry imports app modules (with their controllers), which would create a require cycle.
+ */
+@Injectable()
+export class UniqueAppResolver {
+  constructor(private readonly manager: SessionManager) {}
+
+  /**
+   * Enabled app row for the session; 404 if the app is missing or disabled.
+   * Does not require the session to be running - persistent app data stays accessible for stopped sessions.
+   */
+  async getEnabledApp(sessionName: string, appName: string): Promise<AppDB> {
+    const knex = this.manager.store.getWAHADatabase();
+    const repository = new AppRepository(knex);
+    const app = await repository.getEnabledBySessionAndApp(
+      sessionName,
+      appName,
+    );
+    if (!app) {
+      throw new NotFoundException(
+        `App '${appName}' is not enabled for session '${sessionName}'`,
+      );
+    }
+    return app;
+  }
+
+  /**
+   * Live plugin instance for the app, or null when the session is not running (best-effort access).
+   */
+  getPlugin<Plugin extends SessionPlugin<any, any>>(
+    app: AppDB,
+    PluginClass: abstract new (...args: any[]) => Plugin,
+  ): Plugin | null {
+    if (!this.manager.isRunning(app.session)) {
+      return null;
+    }
+    let session;
+    try {
+      session = this.manager.getSession(app.session);
+    } catch {
+      return null;
+    }
+    return session.plugins.get(PluginClass, app.id);
+  }
+}

src/apps/app_sdk/storage/AppRepository.ts

@@ -83,6 +83,25 @@ export class AppRepository {
     return this.deserialize(app);
   }
 
+  /**
+   * Gets the enabled app of the given type for a session.
+   * Intended for unique-per-session apps - returns the first match.
+   */
+  async getEnabledBySessionAndApp(
+    session: string,
+    appName: string,
+  ): Promise<AppDB | null> {
+    const app = await this.knex(this.tableName)
+      .where('session', session)
+      .andWhere('app', appName)
+      .andWhere('enabled', true)
+      .first();
+    if (!app) {
+      return null;
+    }
+    return this.deserialize(app);
+  }
+
   /**
    * Gets all apps
    */

src/apps/apps.module.disabled.ts

@@ -1,5 +1,6 @@
 import { AppsService } from '@waha/apps/app_sdk/services/IAppsService';
 import { AppsDisabledService } from '@waha/apps/app_sdk/services/AppsDisabledService';
+import { UniqueAppResolver } from '@waha/apps/app_sdk/services/UniqueAppResolver';
 import { AppsController } from '@waha/apps/app_sdk/api/apps.controller';
 import { ChatwootLocalesController } from '@waha/apps/chatwoot/api/chatwoot.locales.controller';
 
@@ -9,6 +10,7 @@ export const AppsDisabled = {
       provide: AppsService,
       useClass: AppsDisabledService,
     },
+    UniqueAppResolver,
   ],
   imports: [],
   controllers: [AppsController, ChatwootLocalesController],

src/apps/apps.module.enabled.ts

@@ -4,17 +4,20 @@ import { RMutexModule } from '@waha/modules/rmutex';
 import { BullBoardModule } from '@bull-board/nestjs';
 import { ExpressAdapter } from '@bull-board/express';
 import { BullAuthMiddleware } from '@waha/apps/app_sdk/auth';
-import { ChatWootExports } from '@waha/apps/chatwoot/chatwoot.module';
-import { McpModuleExports } from '@waha/apps/mcp/mcp.module';
 import { AppsController } from '@waha/apps/app_sdk/api/apps.controller';
-import { CallsAppExports } from '@waha/apps/calls/calls.module';
 import { AppsService } from '@waha/apps/app_sdk/services/IAppsService';
 import { AppsEnabledService } from '@waha/apps/app_sdk/services/AppsEnabledService';
+import { UniqueAppResolver } from '@waha/apps/app_sdk/services/UniqueAppResolver';
 import { Auth } from '@waha/core/auth/config';
 import { AppRuntimeConfig } from '@waha/apps/app_sdk/apps/AppRuntime';
-import { AppName } from '@waha/apps/app_sdk/apps/name';
+import { GetApps } from '@waha/apps/app_sdk/apps/registry';
+import { HttpPathsRegistration } from '@waha/plugins/http.paths.module';
 
 const QUEUES_IMPORTS_REQUIRED = [
+  HttpPathsRegistration(
+    { prefix: '/jobs', include: { authBasic: false } },
+    { prefix: '/jobs/', include: { authBasic: false, accessLog: false } },
+  ),
   BullModule.forRoot({
     connection: {
       url: process.env.REDIS_URL || 'redis://:redis@localhost:6379',
@@ -71,47 +74,27 @@ const QUEUES_IMPORTS = AppRuntimeConfig.HasAppsRequiringQueue()
   ? QUEUES_IMPORTS_REQUIRED
   : [];
 
-function getAppModule(name: AppName) {
-  if (!AppRuntimeConfig.HasApp(name)) {
-    return {
-      imports: [],
-      controllers: [],
-      providers: [],
-    };
-  }
-  switch (name) {
-    case AppName.calls:
-      return CallsAppExports;
-    case AppName.chatwoot:
-      return ChatWootExports;
-    case AppName.mcp:
-      return McpModuleExports;
-    default:
-      throw Error(`App module not found for ${name}`);
-  }
-}
+// Apps enabled in the runtime configuration (WAHA_APPS_ON / WAHA_APPS_OFF)
+const ENABLED_APPS = GetApps().filter((app) =>
+  AppRuntimeConfig.HasApp(app.name),
+);
 
 export const AppsEnabled = {
   imports: [
     ...QUEUES_IMPORTS,
-    ...getAppModule(AppName.mcp).imports,
-    ...getAppModule(AppName.chatwoot).imports,
-    ...getAppModule(AppName.calls).imports,
+    ...ENABLED_APPS.flatMap((app) => app.nestjs.imports),
   ],
   controllers: [
     AppsController,
-    ...getAppModule(AppName.mcp).controllers,
-    ...getAppModule(AppName.chatwoot).controllers,
-    ...getAppModule(AppName.calls).controllers,
+    ...ENABLED_APPS.flatMap((app) => app.nestjs.controllers),
   ],
   providers: [
     {
       provide: AppsService,
       useClass: AppsEnabledService,
     },
-    ...getAppModule(AppName.mcp).providers,
-    ...getAppModule(AppName.calls).providers,
-    ...getAppModule(AppName.chatwoot).providers,
+    UniqueAppResolver,
+    ...ENABLED_APPS.flatMap((app) => app.nestjs.providers),
   ],
 };
 

src/apps/brazilian-phone-numbers/api/brazilian-phone-numbers.controller.ts

@@ -0,0 +1,163 @@
+import {
+  Controller,
+  Delete,
+  Get,
+  Param,
+  Query,
+  UnprocessableEntityException,
+  UseGuards,
+  UsePipes,
+} from '@nestjs/common';
+import { ApiOperation, ApiSecurity } from '@nestjs/swagger';
+import {
+  BrazilianPhoneCachePurgeResponse,
+  BrazilianPhoneCacheStatsResponse,
+  BrazilianPhoneDbCacheEntry,
+  BrazilianPhoneMemoryCacheEntry,
+} from '@waha/apps/brazilian-phone-numbers/dto/cache.dto';
+import {
+  BrazilianPhoneNumbersAppConfig,
+  DEFAULT_PERSISTENT_TTL,
+} from '@waha/apps/brazilian-phone-numbers/dto/config.dto';
+import { BrazilianPhoneCorePlugin } from '@waha/apps/brazilian-phone-numbers/plugins/BrazilianPhoneCorePlugin';
+import { BrazilianPhoneNumbersAppService } from '@waha/apps/brazilian-phone-numbers/services/BrazilianPhoneNumbersAppService';
+import { BrazilianPhoneCacheRepository } from '@waha/apps/brazilian-phone-numbers/storage/BrazilianPhoneCacheRepository';
+import { AppName } from '@waha/apps/app_sdk/apps/apps';
+import { UniqueAppResolver } from '@waha/apps/app_sdk/services/UniqueAppResolver';
+import { AppDB } from '@waha/apps/app_sdk/storage/types';
+import { SessionManager } from '@waha/core/abc/manager.abc';
+import { Action } from '@waha/core/auth/casl.types';
+import { CanSession, FromParam } from '@waha/core/auth/policies';
+import { CheckPolicies } from '@waha/core/auth/policies.decorator';
+import { PoliciesGuard } from '@waha/core/auth/policies.guard';
+import { SessionApiParam } from '@waha/nestjs/params/SessionApiParam';
+import { WAHAValidationPipe } from '@waha/nestjs/pipes/WAHAValidationPipe';
+import { parseDurationMs } from '@waha/nestjs/validation/IsDuration';
+import { LimitOffsetParams } from '@waha/structures/pagination.dto';
+import * as ms from 'ms';
+
+const DEFAULT_LIMIT = 100;
+
+@ApiSecurity('api_key')
+@Controller('api/apps/brazilian-phone-numbers/:session')
+@UseGuards(PoliciesGuard)
+export class BrazilianPhoneNumbersController {
+  constructor(
+    private manager: SessionManager,
+    private resolver: UniqueAppResolver,
+    private appService: BrazilianPhoneNumbersAppService,
+  ) {}
+
+  @Get('cache/memory')
+  @SessionApiParam
+  @ApiOperation({
+    summary: 'List in-memory cache entries',
+    description:
+      'Entries from the in-memory cache tier of the running session, ' +
+      'sorted by key. The session must be running.',
+  })
+  @CheckPolicies(CanSession(Action.Control, FromParam('session')))
+  @UsePipes(new WAHAValidationPipe())
+  async memory(
+    @Param('session') session: string,
+    @Query(new WAHAValidationPipe()) query: LimitOffsetParams,
+  ): Promise<BrazilianPhoneMemoryCacheEntry[]> {
+    const app = await this.getApp(session);
+    const plugin = this.resolver.getPlugin(app, BrazilianPhoneCorePlugin);
+    if (!plugin) {
+      throw new UnprocessableEntityException(
+        `Session '${session}' is not running - the in-memory cache is not available.`,
+      );
+    }
+    const offset = query.offset ?? 0;
+    const limit = query.limit ?? DEFAULT_LIMIT;
+    return plugin.getMemoryCacheEntries().slice(offset, offset + limit);
+  }
+
+  @Get('cache/db')
+  @SessionApiParam
+  @ApiOperation({
+    summary: 'List persistent cache entries',
+    description:
+      'Entries from the persistent (database) cache tier, sorted by id. ' +
+      'Works even when the session is stopped.',
+  })
+  @CheckPolicies(CanSession(Action.Control, FromParam('session')))
+  @UsePipes(new WAHAValidationPipe())
+  async db(
+    @Param('session') session: string,
+    @Query(new WAHAValidationPipe()) query: LimitOffsetParams,
+  ): Promise<BrazilianPhoneDbCacheEntry[]> {
+    const app = await this.getApp(session);
+    if (!this.persistentEnabled(app)) {
+      throw new UnprocessableEntityException(
+        `Persistent cache is disabled for the app in session '${session}'.`,
+      );
+    }
+    const offset = query.offset ?? 0;
+    const limit = query.limit ?? DEFAULT_LIMIT;
+    return await this.repository(app).list(limit, offset);
+  }
+
+  @Get('cache/stats')
+  @SessionApiParam
+  @ApiOperation({
+    summary: 'Get cache stats',
+    description:
+      'Stats for both cache tiers. "memory" is null when the session is not running, ' +
+      '"db" is null when the persistent cache is disabled.',
+  })
+  @CheckPolicies(CanSession(Action.Control, FromParam('session')))
+  @UsePipes(new WAHAValidationPipe())
+  async stats(
+    @Param('session') session: string,
+  ): Promise<BrazilianPhoneCacheStatsResponse> {
+    const app = await this.getApp(session);
+    const plugin = this.resolver.getPlugin(app, BrazilianPhoneCorePlugin);
+    const memory = plugin ? plugin.getMemoryCacheStats() : null;
+    let db = null;
+    if (this.persistentEnabled(app)) {
+      db = await this.repository(app).stats();
+    }
+    return { memory: memory, db: db };
+  }
+
+  @Delete('cache/purge')
+  @SessionApiParam
+  @ApiOperation({
+    summary: 'Purge the resolved-numbers cache',
+    description:
+      'Removes ALL persistent cache entries and clears the in-memory tier ' +
+      '(the in-memory tier only when the session is running).',
+  })
+  @CheckPolicies(CanSession(Action.Control, FromParam('session')))
+  @UsePipes(new WAHAValidationPipe())
+  async purge(
+    @Param('session') session: string,
+  ): Promise<BrazilianPhoneCachePurgeResponse> {
+    const app = await this.getApp(session);
+    const deleted = await this.appService.purgeCache(this.manager, app);
+    return { deleted: deleted };
+  }
+
+  private async getApp(session: string): Promise<AppDB> {
+    return await this.resolver.getEnabledApp(
+      session,
+      AppName.brazilianPhoneNumbers,
+    );
+  }
+
+  private persistentEnabled(app: AppDB): boolean {
+    const config = app.config as BrazilianPhoneNumbersAppConfig;
+    return config?.cache?.persistent ?? true;
+  }
+
+  private repository(app: AppDB): BrazilianPhoneCacheRepository {
+    const knex = this.manager.store.getWAHADatabase();
+    const config = app.config as BrazilianPhoneNumbersAppConfig;
+    const ttlMs =
+      parseDurationMs(config?.cache?.persistentTtl) ??
+      ms(DEFAULT_PERSISTENT_TTL);
+    return new BrazilianPhoneCacheRepository(knex, app.pk, ttlMs);
+  }
+}

src/apps/brazilian-phone-numbers/app.module.ts

@@ -0,0 +1,27 @@
+import { AppModule } from '@waha/apps/app_sdk/apps/definition';
+import { AppName } from '@waha/apps/app_sdk/apps/apps';
+import { BrazilianPhoneNumbersController } from '@waha/apps/brazilian-phone-numbers/api/brazilian-phone-numbers.controller';
+import { BrazilianPhoneNumbersAppService } from '@waha/apps/brazilian-phone-numbers/services/BrazilianPhoneNumbersAppService';
+
+const BrazilianPhoneNumbersAppModule: AppModule = {
+  name: AppName.brazilianPhoneNumbers,
+  openapi: {
+    title: 'Brazilian Phone Numbers',
+    description: 'Resolve Brazilian phone numbers (with and without 9 digit)',
+  },
+  definition: {
+    plainkey: false,
+    queue: false,
+    migrations: true,
+    restartOnChange: true,
+    unique: true,
+  },
+  nestjs: {
+    imports: [],
+    controllers: [BrazilianPhoneNumbersController],
+    providers: [BrazilianPhoneNumbersAppService],
+  },
+  Service: BrazilianPhoneNumbersAppService,
+};
+
+export default BrazilianPhoneNumbersAppModule;

src/apps/brazilian-phone-numbers/dto/app.dto.ts

@@ -0,0 +1,8 @@
+import { App } from '@waha/apps/app_sdk/dto/app.dto';
+import { BrazilianPhoneNumbersAppConfig } from '@waha/apps/brazilian-phone-numbers/dto/config.dto';
+import { Type } from 'class-transformer';
+
+export class BrazilianPhoneNumbersAppDto extends App<BrazilianPhoneNumbersAppConfig> {
+  @Type(() => BrazilianPhoneNumbersAppConfig)
+  config: BrazilianPhoneNumbersAppConfig;
+}

src/apps/brazilian-phone-numbers/dto/cache.dto.ts

@@ -0,0 +1,92 @@
+import { ApiProperty } from '@nestjs/swagger';
+
+export class BrazilianPhoneMemoryCacheEntry {
+  @ApiProperty({
+    description: 'Phone number digits the cache entry is keyed by',
+  })
+  key: string;
+
+  @ApiProperty({
+    description:
+      'Resolved chat id. An empty string is a confirmed-negative - ' +
+      'the number is verified NOT to exist on WhatsApp.',
+  })
+  chatId: string;
+
+  @ApiProperty({
+    description: 'When the entry expires; null when it has no TTL',
+    nullable: true,
+    type: Date,
+  })
+  expiresAt: Date | null;
+}
+
+export class BrazilianPhoneDbCacheEntry {
+  @ApiProperty({
+    description: 'Record id',
+  })
+  id: number;
+
+  @ApiProperty({
+    description: 'Phone number digits the cache entry is keyed by',
+  })
+  key: string;
+
+  @ApiProperty({
+    description: 'Resolved chat id',
+  })
+  chatId: string;
+
+  @ApiProperty({
+    description: 'Whether the resolution was verified against WhatsApp',
+  })
+  verified: boolean;
+
+  @ApiProperty({
+    description: 'When the number was resolved',
+  })
+  resolvedAt: Date;
+}
+
+export class BrazilianPhoneMemoryCacheStats {
+  @ApiProperty({
+    description: 'Number of entries in the in-memory cache',
+  })
+  total: number;
+}
+
+export class BrazilianPhoneDbCacheStats {
+  @ApiProperty({
+    description: 'Total number of entries in the persistent cache',
+  })
+  total: number;
+
+  @ApiProperty({
+    description: 'Number of entries verified against WhatsApp',
+  })
+  verified: number;
+}
+
+export class BrazilianPhoneCacheStatsResponse {
+  @ApiProperty({
+    description: 'In-memory cache stats; null when the session is not running',
+    nullable: true,
+    type: BrazilianPhoneMemoryCacheStats,
+  })
+  memory: BrazilianPhoneMemoryCacheStats | null;
+
+  @ApiProperty({
+    description:
+      'Persistent cache stats; null when the persistent cache is disabled',
+    nullable: true,
+    type: BrazilianPhoneDbCacheStats,
+  })
+  db: BrazilianPhoneDbCacheStats | null;
+}
+
+export class BrazilianPhoneCachePurgeResponse {
+  @ApiProperty({
+    description: 'Number of entries removed from the persistent cache',
+  })
+  deleted: number;
+}

src/apps/brazilian-phone-numbers/dto/config.dto.ts

@@ -0,0 +1,88 @@
+import { ApiProperty } from '@nestjs/swagger';
+import { IsDuration } from '@waha/nestjs/validation/IsDuration';
+import { Type } from 'class-transformer';
+import {
+  IsBoolean,
+  IsOptional,
+  IsString,
+  ValidateNested,
+} from 'class-validator';
+import * as ms from 'ms';
+
+export const DEFAULT_MEMORY_TTL: ms.StringValue = '24h';
+export const DEFAULT_PERSISTENT_TTL: ms.StringValue = '31d';
+
+export class BrazilianPhoneNumbersCacheConfig {
+  @ApiProperty({
+    description:
+      'TTL for resolved numbers in the in-memory cache tier, as a duration string.',
+    required: false,
+    default: DEFAULT_MEMORY_TTL,
+    example: '24h',
+  })
+  @IsOptional()
+  @IsString()
+  @IsDuration()
+  memoryTtl?: string = DEFAULT_MEMORY_TTL;
+
+  @ApiProperty({
+    description:
+      'Persist verified resolutions in the database so they survive session restarts. ' +
+      'Unverified best-guesses and negatives are never persisted.',
+    required: false,
+    default: true,
+  })
+  @IsOptional()
+  @IsBoolean()
+  persistent?: boolean = true;
+
+  @ApiProperty({
+    description:
+      'TTL for resolved numbers in the database cache tier, as a duration string.',
+    required: false,
+    default: DEFAULT_PERSISTENT_TTL,
+    example: '31d',
+  })
+  @IsOptional()
+  @IsString()
+  @IsDuration()
+  persistentTtl?: string = DEFAULT_PERSISTENT_TTL;
+}
+
+export class BrazilianPhoneNumbersAppConfig {
+  @ApiProperty({
+    description:
+      'When a Brazilian mobile number is confirmed NOT to exist on WhatsApp: ' +
+      'false (default) - warn and send the best-guess anyway; ' +
+      'true - reject the send with 422. Strict trades delivery for certainty ' +
+      'and can block valid sends on lookup false-negatives (throttling).',
+    required: false,
+    default: false,
+  })
+  @IsOptional()
+  @IsBoolean()
+  strict?: boolean = false;
+
+  @ApiProperty({
+    description:
+      'Allow the WhatsApp server lookup tier for numbers the cache and the ' +
+      'local contact store cannot resolve. When false, unresolved numbers are ' +
+      'sent as provided.',
+    required: false,
+    default: true,
+  })
+  @IsOptional()
+  @IsBoolean()
+  lookup?: boolean = true;
+
+  @ApiProperty({
+    description: 'Cache tuning for resolved numbers.',
+    required: false,
+    type: BrazilianPhoneNumbersCacheConfig,
+  })
+  @IsOptional()
+  @ValidateNested()
+  @Type(() => BrazilianPhoneNumbersCacheConfig)
+  cache?: BrazilianPhoneNumbersCacheConfig =
+    new BrazilianPhoneNumbersCacheConfig();
+}

src/apps/brazilian-phone-numbers/migrations/001_init_brazilian_phone_numbers.ts

@@ -0,0 +1,29 @@
+import { Knex } from 'knex';
+
+exports.up = function (knex: Knex) {
+  return knex.schema
+    .createTable('app_brazilian_phone_numbers_cache', function (table) {
+      table.increments('id');
+      table.integer('app_pk');
+      table
+        .foreign('app_pk')
+        .references('pk')
+        .inTable('apps')
+        .onDelete('CASCADE');
+      // Phone number digits the caller may address the chat by
+      table.string('key', 32);
+      // The chat id the number resolved to ('5585...@c.us' or '...@lid')
+      table.string('chat_id', 64);
+      table.boolean('verified');
+      table.datetime('resolved_at');
+    })
+    .table('app_brazilian_phone_numbers_cache', function (table) {
+      table.unique(['app_pk', 'key'], { indexName: 'brphone_app_key_unique' });
+      table.index(['app_pk'], 'brphone_app_idx');
+      table.index(['app_pk', 'resolved_at'], 'brphone_app_resolved_idx');
+    });
+};
+
+exports.down = function (knex: Knex) {
+  return knex.schema.dropTable('app_brazilian_phone_numbers_cache');
+};

src/apps/brazilian-phone-numbers/plugins/BrazilianPhoneCorePlugin.test.ts

@@ -0,0 +1,474 @@
+import { UnprocessableEntityException } from '@nestjs/common';
+import { BrazilianPhoneGowsPlugin } from '@waha/apps/brazilian-phone-numbers/plugins/BrazilianPhoneGowsPlugin';
+import { BrazilianPhoneNowebPlugin } from '@waha/apps/brazilian-phone-numbers/plugins/BrazilianPhoneNowebPlugin';
+import { BrazilianPhoneCorePlugin } from '@waha/apps/brazilian-phone-numbers/plugins/BrazilianPhoneCorePlugin';
+import {
+  BrazilianPhoneNumbersAppConfig,
+  BrazilianPhoneNumbersCacheConfig,
+} from '@waha/apps/brazilian-phone-numbers/dto/config.dto';
+import { WhatsappSession } from '@waha/core/abc/session.abc';
+import { RegisterPluginHooks } from '@waha/core/abc/session.plugin.hooks';
+
+const logger: any = {
+  info: jest.fn(),
+  warn: jest.fn(),
+  error: jest.fn(),
+  debug: jest.fn(),
+};
+logger.child = () => logger;
+
+const BaseSession = WhatsappSession as unknown as new (params: any) => any;
+
+class TestSession extends BaseSession {}
+
+function buildSession(): any {
+  return new TestSession({
+    name: 'test',
+    printQR: false,
+    loggerBuilder: { child: () => logger },
+    sessionStore: null,
+    mediaManager: null,
+    sessionConfig: null,
+    engineConfig: null,
+    ignore: {},
+  });
+}
+
+function buildConfig(
+  overrides: Partial<BrazilianPhoneNumbersAppConfig> = {},
+): BrazilianPhoneNumbersAppConfig {
+  const config = new BrazilianPhoneNumbersAppConfig();
+  config.cache = new BrazilianPhoneNumbersCacheConfig();
+  return Object.assign(config, overrides);
+}
+
+interface BuildOptions {
+  config?: Partial<BrazilianPhoneNumbersAppConfig>;
+  repository?: any;
+  pluginClass?: typeof BrazilianPhoneCorePlugin;
+}
+
+function buildPlugin(options: BuildOptions = {}) {
+  const session = buildSession();
+  const PluginClass = options.pluginClass ?? BrazilianPhoneCorePlugin;
+  const plugin = new PluginClass(session, logger, buildConfig(options.config), {
+    repository: options.repository ?? null,
+  });
+  RegisterPluginHooks(plugin);
+  return { session: session, plugin: plugin };
+}
+
+function resolveChat(session: any, wid: string, method = 'sendText') {
+  return session.hooks.wid.chat.promise(wid, method);
+}
+
+function stubLookup(session: any, answer: any) {
+  session.checkNumberStatus = jest.fn(async () => answer);
+}
+
+describe('BrazilianPhonePlugin - wid.chat', () => {
+  it('resolves and caches the canonical phone when the engine answers with a PN', async () => {
+    // '558591203123' is the real number: DDD 85 with an 8-digit local part.
+    const { session } = buildPlugin();
+    stubLookup(session, {
+      numberExists: true,
+      chatId: '558591203123@c.us',
+    });
+
+    const first = await resolveChat(session, '5585991203123@c.us');
+    const second = await resolveChat(session, '5585991203123@c.us');
+
+    expect(first).toBe('558591203123@c.us');
+    expect(second).toBe('558591203123@c.us');
+    // Second call is served from cache - no extra WhatsApp lookup.
+    expect(session.checkNumberStatus).toHaveBeenCalledTimes(1);
+    expect(session.checkNumberStatus).toHaveBeenCalledWith({
+      phone: '558591203123',
+      session: 'test',
+    });
+  });
+
+  it('prefers the pn form when the engine answers with both pn and a LID', async () => {
+    const { session } = buildPlugin();
+    stubLookup(session, {
+      numberExists: true,
+      chatId: '77820596330581@lid',
+      pn: '558591203123@c.us',
+    });
+
+    const resolved = await resolveChat(session, '5585991203123@c.us');
+
+    expect(resolved).toBe('558591203123@c.us');
+  });
+
+  it('caches a LID answer as-is instead of stapling a phone suffix on it', async () => {
+    // Engines answer with a LID only when the account has no phone form. The
+    // LID is routable, but '77820596330581@c.us' - its digits with a phone
+    // suffix - addresses nobody.
+    const { session } = buildPlugin();
+    stubLookup(session, {
+      numberExists: true,
+      chatId: '77820596330581@lid',
+    });
+
+    const first = await resolveChat(session, '5585991203123@c.us');
+    const second = await resolveChat(session, '5585991203123@c.us');
+
+    expect(first).toBe('77820596330581@lid');
+    expect(second).toBe('77820596330581@lid');
+    expect(session.checkNumberStatus).toHaveBeenCalledTimes(1);
+  });
+
+  it('reuses the cache across both forms of the same number', async () => {
+    const { session } = buildPlugin();
+    stubLookup(session, {
+      numberExists: true,
+      chatId: '558591203123@c.us',
+    });
+
+    // Wrong form first, then the already-correct one: same target, one lookup.
+    const wrongForm = await resolveChat(session, '5585991203123@c.us');
+    const rightForm = await resolveChat(session, '558591203123@c.us');
+
+    expect(wrongForm).toBe('558591203123@c.us');
+    expect(rightForm).toBe('558591203123@c.us');
+    expect(session.checkNumberStatus).toHaveBeenCalledTimes(1);
+  });
+
+  it('shares one in-flight lookup between concurrent sends (single-flight)', async () => {
+    const { session } = buildPlugin();
+    stubLookup(session, {
+      numberExists: true,
+      chatId: '558591203123@c.us',
+    });
+
+    const [first, second] = await Promise.all([
+      resolveChat(session, '5585991203123@c.us'),
+      resolveChat(session, '558591203123@c.us'),
+    ]);
+
+    expect(first).toBe('558591203123@c.us');
+    expect(second).toBe('558591203123@c.us');
+    expect(session.checkNumberStatus).toHaveBeenCalledTimes(1);
+  });
+
+  it('rewrites a dialed toll-free (0800) to the stored form, no lookup', async () => {
+    const { session } = buildPlugin();
+    stubLookup(session, { numberExists: false });
+
+    // Dialed forms with and without the country code, plus the already-stored
+    // form, all address the same chat id - and none hits the WhatsApp lookup.
+    expect(await resolveChat(session, '08000464636@c.us')).toBe(
+      '558000464636@c.us',
+    );
+    expect(await resolveChat(session, '5508000464636@c.us')).toBe(
+      '558000464636@c.us',
+    );
+    expect(await resolveChat(session, '558000464636@c.us')).toBe(
+      '558000464636@c.us',
+    );
+    expect(session.checkNumberStatus).not.toHaveBeenCalled();
+  });
+
+  it('applies the static 9th-digit rule for DDD below the lookup range, no lookup', async () => {
+    const { session } = buildPlugin();
+    stubLookup(session, { numberExists: false });
+
+    const resolved = await resolveChat(session, '551198765432@c.us');
+
+    expect(resolved).toBe('5511998765432@c.us');
+    expect(session.checkNumberStatus).not.toHaveBeenCalled();
+  });
+
+  it('leaves non-Brazilian numbers untouched', async () => {
+    const { session } = buildPlugin();
+    stubLookup(session, { numberExists: false });
+
+    const resolved = await resolveChat(session, '12132132130@c.us');
+
+    expect(resolved).toBe('12132132130@c.us');
+    expect(session.checkNumberStatus).not.toHaveBeenCalled();
+  });
+
+  it('passes recursion-sensitive methods through untouched', async () => {
+    const { session } = buildPlugin();
+    stubLookup(session, { numberExists: false });
+
+    const viaCheck = await resolveChat(
+      session,
+      '5585991203123@c.us',
+      'checkNumberStatus',
+    );
+    const viaLidMap = await resolveChat(
+      session,
+      '5585991203123@c.us',
+      'findLIDByPhoneNumber',
+    );
+
+    expect(viaCheck).toBe('5585991203123@c.us');
+    expect(viaLidMap).toBe('5585991203123@c.us');
+    expect(session.checkNumberStatus).not.toHaveBeenCalled();
+  });
+
+  it('resolves non-send methods locally only - no lookup, cache still honored', async () => {
+    const { session } = buildPlugin();
+    stubLookup(session, {
+      numberExists: true,
+      chatId: '558591203123@c.us',
+    });
+
+    // Cache miss on a local-only method: input goes through unresolved.
+    const cold = await resolveChat(
+      session,
+      '5585991203123@c.us',
+      'startTyping',
+    );
+    expect(cold).toBe('5585991203123@c.us');
+    expect(session.checkNumberStatus).not.toHaveBeenCalled();
+
+    // A send resolves and caches; the local-only method now sees the cache.
+    await resolveChat(session, '5585991203123@c.us', 'sendText');
+    const warm = await resolveChat(
+      session,
+      '5585991203123@c.us',
+      'startTyping',
+    );
+    expect(warm).toBe('558591203123@c.us');
+    expect(session.checkNumberStatus).toHaveBeenCalledTimes(1);
+  });
+
+  it('throws 422 for a malformed number on send, passes it through otherwise', async () => {
+    const { session } = buildPlugin();
+    stubLookup(session, { numberExists: false });
+
+    await expect(resolveChat(session, '55859912@c.us')).rejects.toThrow(
+      UnprocessableEntityException,
+    );
+    const readOp = await resolveChat(session, '55859912@c.us', 'getPresence');
+    expect(readOp).toBe('55859912@c.us');
+  });
+
+  it('soft mode: sends the best-guess when the number is confirmed not to exist', async () => {
+    const { session } = buildPlugin();
+    stubLookup(session, { numberExists: false });
+
+    const resolved = await resolveChat(session, '558591203123@c.us');
+
+    // DDD 85 keeps the 8-digit heuristic as the best-guess.
+    expect(resolved).toBe('558591203123@c.us');
+    // Both candidates were tried before giving up.
+    expect(session.checkNumberStatus).toHaveBeenCalledTimes(2);
+  });
+
+  it('strict mode: rejects a confirmed-nonexistent number and caches the negative', async () => {
+    const { session } = buildPlugin({ config: { strict: true } });
+    stubLookup(session, { numberExists: false });
+
+    await expect(resolveChat(session, '5585991203123@c.us')).rejects.toThrow(
+      UnprocessableEntityException,
+    );
+    const lookups = session.checkNumberStatus.mock.calls.length;
+
+    // The negative is cached - the retry rejects without a new lookup...
+    await expect(resolveChat(session, '5585991203123@c.us')).rejects.toThrow(
+      UnprocessableEntityException,
+    );
+    expect(session.checkNumberStatus).toHaveBeenCalledTimes(lookups);
+    // ...and local-only methods still pass the number through.
+    const readOp = await resolveChat(
+      session,
+      '5585991203123@c.us',
+      'getPresence',
+    );
+    expect(readOp).toBe('5585991203123@c.us');
+  });
+
+  it('sends as-is without caching when the lookup fails', async () => {
+    const { session } = buildPlugin();
+    session.checkNumberStatus = jest.fn(async () => {
+      throw new Error('engine down');
+    });
+
+    const resolved = await resolveChat(session, '5585991203123@c.us');
+
+    expect(resolved).toBe('5585991203123@c.us');
+    const lookups = session.checkNumberStatus.mock.calls.length;
+    // Not cached: the next send retries the lookup.
+    await resolveChat(session, '5585991203123@c.us');
+    expect(session.checkNumberStatus.mock.calls.length).toBeGreaterThan(
+      lookups,
+    );
+  });
+
+  it('lookup: false disables the WhatsApp tier', async () => {
+    const { session } = buildPlugin({ config: { lookup: false } });
+    stubLookup(session, {
+      numberExists: true,
+      chatId: '558591203123@c.us',
+    });
+
+    const resolved = await resolveChat(session, '5585991203123@c.us');
+
+    expect(resolved).toBe('5585991203123@c.us');
+    expect(session.checkNumberStatus).not.toHaveBeenCalled();
+  });
+});
+
+describe('BrazilianPhonePlugin - wid.mention', () => {
+  it('resolves mentions best-effort and never breaks the send', async () => {
+    const { session } = buildPlugin({ config: { strict: true } });
+    stubLookup(session, { numberExists: false });
+
+    // Strict mode rejects the number on the chat hook, but a mention falls
+    // back to the input instead of failing the whole message.
+    const mention = await session.hooks.wid.mention.promise(
+      '5585991203123@c.us',
+      'sendText',
+    );
+
+    expect(mention).toBe('5585991203123@c.us');
+  });
+});
+
+describe('BrazilianPhonePlugin - persistent cache tier', () => {
+  function buildRepository() {
+    return {
+      get: jest.fn().mockResolvedValue(null),
+      setMany: jest.fn().mockResolvedValue(undefined),
+    };
+  }
+
+  it('serves a persisted resolution without any lookup and warms the memory tier', async () => {
+    const repository = buildRepository();
+    repository.get.mockResolvedValue({
+      key: '5585991203123',
+      chatId: '558591203123@c.us',
+      verified: true,
+      resolvedAt: new Date(),
+    });
+    const { session } = buildPlugin({ repository: repository });
+    stubLookup(session, { numberExists: false });
+
+    const first = await resolveChat(session, '5585991203123@c.us');
+    const second = await resolveChat(session, '5585991203123@c.us');
+
+    expect(first).toBe('558591203123@c.us');
+    expect(second).toBe('558591203123@c.us');
+    expect(session.checkNumberStatus).not.toHaveBeenCalled();
+    // Second call hits the memory tier - the database is read once.
+    expect(repository.get).toHaveBeenCalledTimes(1);
+  });
+
+  it('persists verified resolutions under both forms of the number', async () => {
+    const repository = buildRepository();
+    const { session } = buildPlugin({ repository: repository });
+    stubLookup(session, {
+      numberExists: true,
+      chatId: '558591203123@c.us',
+    });
+
+    await resolveChat(session, '5585991203123@c.us');
+
+    expect(repository.setMany).toHaveBeenCalledTimes(1);
+    const [keys, chatId, verified] = repository.setMany.mock.calls[0];
+    expect([...keys].sort()).toEqual(['558591203123', '5585991203123']);
+    expect(chatId).toBe('558591203123@c.us');
+    expect(verified).toBe(true);
+  });
+
+  it('does not persist best-guesses or static-rule rewrites', async () => {
+    const repository = buildRepository();
+    const { session } = buildPlugin({ repository: repository });
+    stubLookup(session, { numberExists: false });
+
+    // Static rule (DDD 11) and a confirmed-nonexistent best-guess (DDD 85).
+    await resolveChat(session, '551198765432@c.us');
+    await resolveChat(session, '558591203123@c.us');
+
+    expect(repository.setMany).not.toHaveBeenCalled();
+  });
+
+  it('resolves normally when the persistent tier errors out', async () => {
+    const repository = buildRepository();
+    repository.get.mockRejectedValue(new Error('db down'));
+    const { session } = buildPlugin({ repository: repository });
+    stubLookup(session, {
+      numberExists: true,
+      chatId: '558591203123@c.us',
+    });
+
+    const resolved = await resolveChat(session, '5585991203123@c.us');
+
+    expect(resolved).toBe('558591203123@c.us');
+  });
+});
+
+describe('BrazilianPhoneGowsPlugin - local LID map tier', () => {
+  it('resolves via the LID map with no WhatsApp lookup', async () => {
+    const { session } = buildPlugin({ pluginClass: BrazilianPhoneGowsPlugin });
+    stubLookup(session, { numberExists: false });
+    session.findLIDByPhoneNumber = jest.fn(async (phone: string) => {
+      if (phone === '558591203123') {
+        return { lid: '77820596330581@lid', pn: '558591203123@c.us' };
+      }
+      return { lid: null, pn: null };
+    });
+
+    const resolved = await resolveChat(session, '5585991203123@c.us');
+
+    expect(resolved).toBe('558591203123@c.us');
+    expect(session.checkNumberStatus).not.toHaveBeenCalled();
+  });
+
+  it('falls through to the WhatsApp lookup for unknown numbers', async () => {
+    const { session } = buildPlugin({ pluginClass: BrazilianPhoneGowsPlugin });
+    stubLookup(session, {
+      numberExists: true,
+      chatId: '5585991203123@c.us',
+    });
+    session.findLIDByPhoneNumber = jest.fn(async () => {
+      return { lid: null, pn: null };
+    });
+
+    const resolved = await resolveChat(session, '5585991203123@c.us');
+
+    expect(resolved).toBe('5585991203123@c.us');
+    expect(session.checkNumberStatus).toHaveBeenCalled();
+  });
+});
+
+describe('BrazilianPhoneNowebPlugin - local contact store tier', () => {
+  it('resolves via the contact store with no WhatsApp lookup', async () => {
+    const { session } = buildPlugin({ pluginClass: BrazilianPhoneNowebPlugin });
+    stubLookup(session, { numberExists: false });
+    session.store = {
+      getContactById: jest.fn(async (jid: string) => {
+        if (jid === '558591203123@s.whatsapp.net') {
+          return { id: '558591203123@s.whatsapp.net' };
+        }
+        return null;
+      }),
+    };
+
+    const resolved = await resolveChat(session, '5585991203123@c.us');
+
+    expect(resolved).toBe('558591203123@c.us');
+    expect(session.checkNumberStatus).not.toHaveBeenCalled();
+  });
+
+  it('falls through to the WhatsApp lookup when the store has no match', async () => {
+    const { session } = buildPlugin({ pluginClass: BrazilianPhoneNowebPlugin });
+    stubLookup(session, {
+      numberExists: true,
+      chatId: '558591203123@c.us',
+    });
+    session.store = {
+      getContactById: jest.fn(async () => null),
+    };
+
+    const resolved = await resolveChat(session, '5585991203123@c.us');
+
+    expect(resolved).toBe('558591203123@c.us');
+    expect(session.checkNumberStatus).toHaveBeenCalled();
+  });
+});

src/apps/brazilian-phone-numbers/plugins/BrazilianPhoneCorePlugin.ts

@@ -0,0 +1,383 @@
+import { UnprocessableEntityException } from '@nestjs/common';
+import {
+  BrazilianPhoneMemoryCacheEntry,
+  BrazilianPhoneMemoryCacheStats,
+} from '@waha/apps/brazilian-phone-numbers/dto/cache.dto';
+import {
+  BrazilianPhoneNumbersAppConfig,
+  DEFAULT_MEMORY_TTL,
+} from '@waha/apps/brazilian-phone-numbers/dto/config.dto';
+import { BrazilianPhoneCacheRepository } from '@waha/apps/brazilian-phone-numbers/storage/BrazilianPhoneCacheRepository';
+import {
+  BR_PHONE_NEGATIVE_CACHE_TTL_SECONDS,
+  extractPhoneDigits,
+  generateBrazilMobileLookupCandidates,
+  getBrazilPhoneCacheKeys,
+  isBrazilCountryCode,
+  isBrazilMobile,
+  isMalformedBrazilPhone,
+  needsBrazilWhatsAppLookup,
+  normalizeBrazilMobileForSendDigits,
+  normalizeBrazilTollFreeDigits,
+  shouldSkipBrazilPhoneNormalization,
+} from '@waha/apps/brazilian-phone-numbers/utils/brPhone';
+import { ensureSuffix, WhatsappSession } from '@waha/core/abc/session.abc';
+import { SessionPlugin } from '@waha/core/abc/session.plugin';
+import { PluginHook } from '@waha/core/abc/session.plugin.hooks';
+import { parseDurationMs } from '@waha/nestjs/validation/IsDuration';
+import { WANumberExistResult } from '@waha/structures/chatting.dto';
+import * as ms from 'ms';
+import * as NodeCache from 'node-cache';
+import { Logger } from 'pino';
+
+// Engine methods that call these hooks from inside the resolution tiers
+// (WPP 'checkNumberStatus', NOWEB/GOWS/WPP 'findLIDByPhoneNumber' route the
+// phone through 'wid.chat' themselves) - resolving here again would recurse.
+const SKIP_METHODS = new Set(['checkNumberStatus', 'findLIDByPhoneNumber']);
+
+// Message-send paths get the full resolution, including the WhatsApp lookup,
+// and may reject with 422 (malformed number, strict mode). Every other method
+// (typing, seen, read, delete, group ops, ...) resolves locally only - cache
+// and static rule - and never reaches the network or throws.
+const SEND_METHODS = new Set([
+  'sendText',
+  'sendImage',
+  'sendFile',
+  'sendVideo',
+  'sendVoice',
+  'sendMedia',
+  'sendPoll',
+  'sendList',
+  'sendButtons',
+  'sendButtonsReply',
+  'sendContactVCard',
+  'sendLocation',
+  'sendLinkPreview',
+  'sendLinkCustomPreview',
+  'sendEvent',
+  'reply',
+  'forwardMessage',
+]);
+
+// Confirmed-negative marker in the memory cache ('' is not a valid chat id).
+const NOT_FOUND = '';
+
+export interface BrazilianPhoneCorePluginDeps {
+  repository: BrazilianPhoneCacheRepository | null;
+}
+
+/**
+ * Resolves Brazilian phone numbers into the chat id the account is actually
+ * registered under (9th-digit ambiguity for DDD 31-99, static rule for
+ * DDD < 31, 0800 toll-free rewrite), tiered cheapest-first:
+ *
+ * 1. in-memory cache, keyed by both forms of the number
+ * 2. static 9th-digit rule for DDD < 31 - no network
+ * 3. persistent database cache (verified resolutions only)
+ * 4. local contact / LID store (engine-specific subclasses) - no network
+ * 5. WhatsApp lookup, single-flight so concurrent sends share one query
+ */
+export class BrazilianPhoneCorePlugin extends SessionPlugin<
+  BrazilianPhoneNumbersAppConfig,
+  BrazilianPhoneCorePluginDeps
+> {
+  protected memory: NodeCache;
+  // Single-flight guard: concurrent first-time resolutions of the same number
+  // share one in-flight WhatsApp lookup instead of each firing its own query.
+  private inflight: Map<string, Promise<string>> = new Map();
+
+  constructor(
+    session: WhatsappSession,
+    logger: Logger,
+    config: BrazilianPhoneNumbersAppConfig,
+    deps: BrazilianPhoneCorePluginDeps,
+  ) {
+    super(session, logger, config, deps);
+    const memoryTtlMs =
+      parseDurationMs(config?.cache?.memoryTtl) ?? ms(DEFAULT_MEMORY_TTL);
+    this.memory = new NodeCache({
+      stdTTL: Math.floor(memoryTtlMs / 1000),
+    });
+  }
+
+  @PluginHook((hooks) => hooks.wid.chat)
+  async resolveChatWid(wid: string, method: string): Promise<string> {
+    if (SKIP_METHODS.has(method)) {
+      return wid;
+    }
+    return await this.resolve(wid, SEND_METHODS.has(method));
+  }
+
+  // Mentions are best-effort: a non-existent mention must never break the send.
+  @PluginHook((hooks) => hooks.wid.mention)
+  async resolveMentionWid(wid: string, method: string): Promise<string> {
+    if (SKIP_METHODS.has(method)) {
+      return wid;
+    }
+    try {
+      return await this.resolve(wid, SEND_METHODS.has(method));
+    } catch (error) {
+      this.logger.warn(
+        `Could not resolve mention '${wid}', using as-is: ${error}`,
+      );
+      return wid;
+    }
+  }
+
+  public clearMemoryCache(): void {
+    this.memory.flushAll();
+  }
+
+  public getMemoryCacheStats(): BrazilianPhoneMemoryCacheStats {
+    return { total: this.memory.keys().length };
+  }
+
+  // Entries sorted by key, so API pagination over them is stable.
+  public getMemoryCacheEntries(): BrazilianPhoneMemoryCacheEntry[] {
+    const entries: BrazilianPhoneMemoryCacheEntry[] = [];
+    for (const key of this.memory.keys().sort()) {
+      const chatId = this.memory.get<string>(key);
+      if (chatId === undefined) {
+        continue;
+      }
+      // getTtl(): expiration timestamp in ms, 0 = no TTL
+      const expiresAtMs = this.memory.getTtl(key);
+      entries.push({
+        key: key,
+        chatId: chatId,
+        expiresAt: expiresAtMs ? new Date(expiresAtMs) : null,
+      });
+    }
+    return entries;
+  }
+
+  // Optional per-engine tier: resolve a candidate against the local contact /
+  // LID store without hitting WhatsApp servers. Default: no local store.
+  protected async lookupKnownChatId(
+    candidates: string[],
+  ): Promise<string | null> {
+    void candidates;
+    return null;
+  }
+
+  // Cached values are full chat ids ('5511...@c.us' or '123@lid'), never bare
+  // digits: stripping the suffix loses which addressing form was resolved, and
+  // re-adding '@c.us' to LID digits builds an id that addresses nobody.
+  protected async resolve(wid: string, validate: boolean): Promise<string> {
+    const withSuffix = ensureSuffix(wid);
+    if (shouldSkipBrazilPhoneNormalization(withSuffix)) {
+      return withSuffix;
+    }
+
+    const digits = extractPhoneDigits(withSuffix);
+    // Brazilian toll-free (0800): deterministic rewrite to the stored form, no
+    // lookup. Handled before the country-code gate because the dialed form
+    // ('0800...') has no 55 prefix.
+    const tollFree = normalizeBrazilTollFreeDigits(digits);
+    if (tollFree) {
+      return ensureSuffix(tollFree);
+    }
+    if (!isBrazilCountryCode(digits)) {
+      return withSuffix;
+    }
+    // Malformed Brazilian numbers (e.g. 55859912): hard error only on the send
+    // path; local-only ops just pass it through untouched.
+    if (isMalformedBrazilPhone(digits)) {
+      if (validate) {
+        throw new UnprocessableEntityException(
+          `Invalid Brazilian phone number '${withSuffix}'.`,
+        );
+      }
+      return withSuffix;
+    }
+    // Landlines and already-valid non-mobile numbers are left untouched.
+    if (!isBrazilMobile(digits)) {
+      return withSuffix;
+    }
+
+    // Tier 1: in-memory cache. undefined = miss, '' = confirmed-negative
+    // (strict mode), otherwise the resolved/best-guess chat id.
+    const cached = this.memory.get<string>(digits);
+    if (cached !== undefined) {
+      if (cached === NOT_FOUND) {
+        if (validate) {
+          throw new UnprocessableEntityException(
+            `Brazilian mobile phone number '${withSuffix}' does not exist on WhatsApp.`,
+          );
+        }
+        return withSuffix;
+      }
+      return cached;
+    }
+
+    // DDD below the lookup range: static 9th-digit rule, no network needed.
+    if (!needsBrazilWhatsAppLookup(digits)) {
+      const normalized = ensureSuffix(
+        normalizeBrazilMobileForSendDigits(digits),
+      );
+      this.cacheInMemory(digits, normalized);
+      return normalized;
+    }
+
+    // Tier 2: database cache (verified resolutions only).
+    const fromDb = await this.getFromDb(digits);
+    if (fromDb) {
+      this.cacheInMemory(digits, fromDb);
+      return fromDb;
+    }
+
+    const candidates = generateBrazilMobileLookupCandidates(digits);
+
+    // Tier 3: local contact/LID store (engine-specific), no network.
+    const fromStore = await this.lookupKnownChatId(candidates);
+    if (fromStore) {
+      await this.cacheResolved(digits, fromStore);
+      this.logger.debug(
+        `BR mobile '${withSuffix}' resolved locally to '${fromStore}' (no WhatsApp lookup).`,
+      );
+      return fromStore;
+    }
+
+    // Local-only ops never reach the network: return the input as-is.
+    if (!validate) {
+      return withSuffix;
+    }
+    // The WhatsApp lookup tier is disabled by config: send as provided.
+    if (this.config.lookup === false) {
+      return withSuffix;
+    }
+
+    // Tier 4: WhatsApp lookup as last resort, de-duplicated via single-flight.
+    return await this.resolveViaWhatsApp(digits, withSuffix, candidates);
+  }
+
+  private resolveViaWhatsApp(
+    digits: string,
+    withSuffix: string,
+    candidates: string[],
+  ): Promise<string> {
+    const key = getBrazilPhoneCacheKeys(digits).sort().join('|');
+    const inflight = this.inflight.get(key);
+    if (inflight) {
+      return inflight;
+    }
+    const promise = this.lookupOnWhatsApp(
+      digits,
+      withSuffix,
+      candidates,
+    ).finally(() => this.inflight.delete(key));
+    this.inflight.set(key, promise);
+    return promise;
+  }
+
+  private async lookupOnWhatsApp(
+    digits: string,
+    withSuffix: string,
+    candidates: string[],
+  ): Promise<string> {
+    this.logger.debug(
+      `BR mobile '${withSuffix}' not found locally, performing WhatsApp lookup for: ${candidates.join(
+        ', ',
+      )}`,
+    );
+    let lookupFailed = false;
+    for (const candidate of candidates) {
+      let result: WANumberExistResult;
+      try {
+        result = await this.session.checkNumberStatus({
+          phone: candidate,
+          session: this.session.name,
+        });
+      } catch (error) {
+        lookupFailed = true;
+        this.logger.warn(
+          `Failed to verify Brazilian mobile candidate '${candidate}': ${error}`,
+        );
+        continue;
+      }
+      // Prefer the phone-number chat id when the engine knows it; fall back to
+      // whatever chat id was answered (a LID for accounts with no phone form -
+      // routable, and it must not be reduced to digits).
+      const chatId = result?.pn || result?.chatId;
+      if (result?.numberExists && chatId) {
+        await this.cacheResolved(digits, chatId);
+        return chatId;
+      }
+    }
+
+    // Could not validate due to network/engine error: send as-is, do not cache.
+    if (lookupFailed) {
+      this.logger.warn(
+        `Could not validate Brazilian mobile number '${withSuffix}', sending as-is. Tried: ${candidates.join(
+          ', ',
+        )}`,
+      );
+      return withSuffix;
+    }
+
+    // Verified not to exist in any form.
+    if (this.config.strict) {
+      this.cacheInMemory(
+        digits,
+        NOT_FOUND,
+        BR_PHONE_NEGATIVE_CACHE_TTL_SECONDS,
+      );
+      throw new UnprocessableEntityException(
+        `Brazilian mobile phone number '${withSuffix}' does not exist on WhatsApp. Tried: ${candidates.join(
+          ', ',
+        )}`,
+      );
+    }
+    // Soft (default): warn and send the best-guess anyway, so a lookup
+    // false-negative never blocks a valid send. Short TTL - the number may
+    // get registered later.
+    const bestGuess = ensureSuffix(normalizeBrazilMobileForSendDigits(digits));
+    this.cacheInMemory(digits, bestGuess, BR_PHONE_NEGATIVE_CACHE_TTL_SECONDS);
+    this.logger.warn(
+      `Brazilian mobile number '${withSuffix}' not found on WhatsApp, sending best-guess '${bestGuess}'. Tried: ${candidates.join(
+        ', ',
+      )}`,
+    );
+    return bestGuess;
+  }
+
+  // Cache under every form of the number, so both '5585...' and '55859...'
+  // hit the same entry. Default TTL for resolutions, the short negative TTL
+  // for best-guesses and confirmed-negatives.
+  private cacheInMemory(digits: string, chatId: string, ttl?: number): void {
+    for (const key of getBrazilPhoneCacheKeys(digits)) {
+      this.memory.set(key, chatId, ttl);
+    }
+  }
+
+  // Verified resolution: memory plus the database tier (when enabled).
+  private async cacheResolved(digits: string, chatId: string): Promise<void> {
+    this.cacheInMemory(digits, chatId);
+    if (!this.deps.repository) {
+      return;
+    }
+    try {
+      const keys = getBrazilPhoneCacheKeys(digits);
+      await this.deps.repository.setMany(keys, chatId, true, new Date());
+    } catch (error) {
+      this.logger.warn(
+        `Failed to persist BR phone resolution for '${digits}': ${error}`,
+      );
+    }
+  }
+
+  private async getFromDb(digits: string): Promise<string | null> {
+    if (!this.deps.repository) {
+      return null;
+    }
+    try {
+      const entry = await this.deps.repository.get(digits);
+      return entry?.chatId ?? null;
+    } catch (error) {
+      this.logger.warn(
+        `Failed to read BR phone cache for '${digits}': ${error}`,
+      );
+      return null;
+    }
+  }
+}

src/apps/brazilian-phone-numbers/plugins/BrazilianPhoneGowsPlugin.ts

@@ -0,0 +1,30 @@
+import { BrazilianPhoneCorePlugin } from '@waha/apps/brazilian-phone-numbers/plugins/BrazilianPhoneCorePlugin';
+
+/**
+ * GOWS local tier: the PN<->LID map (whatsmeow's 'whatsmeow_lid_map'), which is
+ * populated from contact sync and received messages and persisted in the gows
+ * store. A PN that has a LID mapping is a number this session already knows in
+ * its canonical form, so the correct 9th-digit variant is picked with zero
+ * network calls. Only genuinely cold numbers fall through to the WhatsApp
+ * lookup tier.
+ */
+export class BrazilianPhoneGowsPlugin extends BrazilianPhoneCorePlugin {
+  protected async lookupKnownChatId(
+    candidates: string[],
+  ): Promise<string | null> {
+    for (const candidate of candidates) {
+      try {
+        const { lid, pn } = await this.session.findLIDByPhoneNumber(candidate);
+        // A non-empty LID user part means this exact PN is known locally.
+        if (lid && lid.split('@')[0]) {
+          return pn;
+        }
+      } catch (error) {
+        this.logger.debug(
+          `LID map lookup failed for candidate '${candidate}': ${error}`,
+        );
+      }
+    }
+    return null;
+  }
+}

src/apps/brazilian-phone-numbers/plugins/BrazilianPhoneNowebPlugin.ts

@@ -0,0 +1,29 @@
+import { BrazilianPhoneCorePlugin } from '@waha/apps/brazilian-phone-numbers/plugins/BrazilianPhoneCorePlugin';
+import { toCusFormat, toJID } from '@waha/core/utils/jids';
+
+import type { WhatsappSessionNoWebCore } from '@waha/core/engines/noweb/session.noweb.core';
+
+/**
+ * NOWEB local tier: the session's contact store, populated from history sync
+ * and received messages. A contact stored under one of the candidate forms is
+ * the canonical 9th-digit variant - no network call needed.
+ */
+export class BrazilianPhoneNowebPlugin extends BrazilianPhoneCorePlugin {
+  protected async lookupKnownChatId(
+    candidates: string[],
+  ): Promise<string | null> {
+    const session = this.session as WhatsappSessionNoWebCore;
+    const store = session.store;
+    if (!store) {
+      return null;
+    }
+    for (const candidate of candidates) {
+      const jid = toJID(candidate);
+      const contact = await store.getContactById(jid).catch(() => null);
+      if (contact?.id) {
+        return toCusFormat(contact.id);
+      }
+    }
+    return null;
+  }
+}

src/apps/brazilian-phone-numbers/services/BrazilianPhoneNumbersAppService.ts

@@ -0,0 +1,169 @@
+import { Injectable } from '@nestjs/common';
+import {
+  BrazilianPhoneNumbersAppConfig,
+  DEFAULT_PERSISTENT_TTL,
+} from '@waha/apps/brazilian-phone-numbers/dto/config.dto';
+import { BrazilianPhoneGowsPlugin } from '@waha/apps/brazilian-phone-numbers/plugins/BrazilianPhoneGowsPlugin';
+import { BrazilianPhoneNowebPlugin } from '@waha/apps/brazilian-phone-numbers/plugins/BrazilianPhoneNowebPlugin';
+import { BrazilianPhoneCorePlugin } from '@waha/apps/brazilian-phone-numbers/plugins/BrazilianPhoneCorePlugin';
+import { BrazilianPhoneCacheRepository } from '@waha/apps/brazilian-phone-numbers/storage/BrazilianPhoneCacheRepository';
+import { App } from '@waha/apps/app_sdk/dto/app.dto';
+import { IAppService } from '@waha/apps/app_sdk/services/IAppService';
+import { UniqueAppResolver } from '@waha/apps/app_sdk/services/UniqueAppResolver';
+import { PluginOptions } from '@waha/core/abc/session.plugin';
+import { AppDB } from '@waha/apps/app_sdk/storage/types';
+import { DataStore } from '@waha/core/abc/DataStore';
+import { SessionManager } from '@waha/core/abc/manager.abc';
+import { WhatsappSession } from '@waha/core/abc/session.abc';
+import { parseDurationMs } from '@waha/nestjs/validation/IsDuration';
+import { WAHAEngine } from '@waha/structures/enums.dto';
+import * as ms from 'ms';
+
+// Engines with a local contact/LID store get their own tier; the rest run the
+// core pipeline (cache + static rule + WhatsApp lookup).
+const PLUGINS: Record<WAHAEngine, typeof BrazilianPhoneCorePlugin> = {
+  [WAHAEngine.WEBJS]: BrazilianPhoneCorePlugin,
+  [WAHAEngine.WPP]: BrazilianPhoneCorePlugin,
+  [WAHAEngine.GOWS]: BrazilianPhoneGowsPlugin,
+  [WAHAEngine.NOWEB]: BrazilianPhoneNowebPlugin,
+};
+
+@Injectable()
+export class BrazilianPhoneNumbersAppService implements IAppService {
+  constructor(private readonly resolver: UniqueAppResolver) {}
+
+  validate(app: App<BrazilianPhoneNumbersAppConfig>): void {
+    void app;
+    return;
+  }
+
+  async beforeCreated(app: App<BrazilianPhoneNumbersAppConfig>): Promise<void> {
+    void app;
+    return;
+  }
+
+  async beforeEnabled(
+    manager: SessionManager,
+    savedApp: App<BrazilianPhoneNumbersAppConfig>,
+    newApp: App<BrazilianPhoneNumbersAppConfig>,
+  ): Promise<void> {
+    void manager;
+    void savedApp;
+    void newApp;
+  }
+
+  async beforeDisabled(
+    manager: SessionManager,
+    savedApp: App<BrazilianPhoneNumbersAppConfig>,
+    newApp: App<BrazilianPhoneNumbersAppConfig>,
+  ): Promise<void> {
+    void manager;
+    void savedApp;
+    void newApp;
+  }
+
+  async beforeUpdated(
+    manager: SessionManager,
+    savedApp: App<BrazilianPhoneNumbersAppConfig>,
+    newApp: App<BrazilianPhoneNumbersAppConfig>,
+  ): Promise<void> {
+    void manager;
+    void savedApp;
+    void newApp;
+  }
+
+  async beforeDeleted(
+    manager: SessionManager,
+    app: App<BrazilianPhoneNumbersAppConfig>,
+  ): Promise<void> {
+    void manager;
+    void app;
+  }
+
+  async afterCreated(
+    manager: SessionManager,
+    app: App<BrazilianPhoneNumbersAppConfig>,
+  ): Promise<void> {
+    void manager;
+    void app;
+  }
+
+  async beforeSessionDeleted(
+    manager: SessionManager,
+    app: App<BrazilianPhoneNumbersAppConfig>,
+  ): Promise<void> {
+    void manager;
+    void app;
+  }
+
+  async purge(
+    manager: SessionManager,
+    app: App<BrazilianPhoneNumbersAppConfig>,
+  ): Promise<void> {
+    await this.purgeCache(manager, app as AppDB);
+  }
+
+  /**
+   * Deletes all persistent cache entries and clears the in-memory tier when the session is running.
+   */
+  async purgeCache(manager: SessionManager, app: AppDB): Promise<number> {
+    const knex = manager.store.getWAHADatabase();
+    const config = app.config as BrazilianPhoneNumbersAppConfig;
+    const ttlMs =
+      parseDurationMs(config?.cache?.persistentTtl) ??
+      ms(DEFAULT_PERSISTENT_TTL);
+    const repository = new BrazilianPhoneCacheRepository(knex, app.pk, ttlMs);
+    const deleted = await repository.purge();
+    this.resolver.getPlugin(app, BrazilianPhoneCorePlugin)?.clearMemoryCache();
+    return deleted;
+  }
+
+  async enrich(
+    manager: SessionManager,
+    app: App<BrazilianPhoneNumbersAppConfig>,
+  ): Promise<void> {
+    void manager;
+    void app;
+  }
+
+  plugins(
+    app: App<BrazilianPhoneNumbersAppConfig>,
+    session: WhatsappSession,
+    store?: DataStore,
+  ): PluginOptions[] {
+    const config = app.config ?? new BrazilianPhoneNumbersAppConfig();
+    let repository: BrazilianPhoneCacheRepository | null = null;
+    const persistent = config.cache?.persistent ?? true;
+    const appPk = (app as AppDB).pk;
+    if (persistent && store && appPk) {
+      const ttlMs =
+        parseDurationMs(config.cache?.persistentTtl) ??
+        ms(DEFAULT_PERSISTENT_TTL);
+      repository = new BrazilianPhoneCacheRepository(
+        store.getWAHADatabase(),
+        appPk,
+        ttlMs,
+      );
+    }
+    const BrazilianPhonePlugin = PLUGINS[session.engine];
+    return [BrazilianPhonePlugin.with(config, { repository: repository })];
+  }
+
+  beforeSessionStart(
+    app: App<BrazilianPhoneNumbersAppConfig>,
+    session: WhatsappSession,
+  ): void {
+    void app;
+    void session;
+    return;
+  }
+
+  afterSessionStart(
+    app: App<BrazilianPhoneNumbersAppConfig>,
+    session: WhatsappSession,
+  ): void {
+    void app;
+    void session;
+    return;
+  }
+}

src/apps/brazilian-phone-numbers/storage/BrazilianPhoneCacheRepository.test.ts

@@ -0,0 +1,135 @@
+import knex, { Knex } from 'knex';
+
+import { BrazilianPhoneCacheRepository } from './BrazilianPhoneCacheRepository';
+
+// eslint-disable-next-line @typescript-eslint/no-var-requires
+const initApps = require('../../app_sdk/migrations/001_init_apps');
+// eslint-disable-next-line @typescript-eslint/no-var-requires
+const initCache = require('../migrations/001_init_brazilian_phone_numbers');
+
+const DAY_MS = 24 * 60 * 60 * 1000;
+
+describe('BrazilianPhoneCacheRepository', () => {
+  let db: Knex;
+  let appPk: number;
+  let repository: BrazilianPhoneCacheRepository;
+
+  beforeAll(async () => {
+    db = knex({
+      client: 'sqlite3',
+      connection: { filename: ':memory:' },
+      useNullAsDefault: true,
+    });
+    await initApps.up(db);
+    await initCache.up(db);
+    const [pk] = await db('apps')
+      .insert({
+        id: 'app_test',
+        session: 'default',
+        app: 'brazilian-phone-numbers',
+        config: '{}',
+      })
+      .returning('pk');
+    appPk = typeof pk === 'object' ? pk.pk : pk;
+  });
+
+  afterAll(async () => {
+    await db.destroy();
+  });
+
+  beforeEach(async () => {
+    repository = new BrazilianPhoneCacheRepository(db, appPk, 31 * DAY_MS);
+    await repository.purge();
+  });
+
+  it('stores and reads a resolution under multiple keys', async () => {
+    await repository.setMany(
+      ['558591203123', '5585991203123'],
+      '558591203123@c.us',
+      true,
+      new Date(),
+    );
+
+    const byShortForm = await repository.get('558591203123');
+    const byLongForm = await repository.get('5585991203123');
+
+    expect(byShortForm?.chatId).toBe('558591203123@c.us');
+    expect(byShortForm?.verified).toBe(true);
+    expect(byLongForm?.chatId).toBe('558591203123@c.us');
+  });
+
+  it('upserts on conflict instead of duplicating keys', async () => {
+    await repository.setMany(['558591203123'], 'old@c.us', true, new Date());
+    await repository.setMany(
+      ['558591203123'],
+      '77820596330581@lid',
+      true,
+      new Date(),
+    );
+
+    const entry = await repository.get('558591203123');
+    const stats = await repository.stats();
+
+    expect(entry?.chatId).toBe('77820596330581@lid');
+    expect(stats.total).toBe(1);
+  });
+
+  it('does not return expired entries', async () => {
+    const expired = new Date(Date.now() - 40 * DAY_MS);
+    await repository.setMany(
+      ['558591203123'],
+      '558591203123@c.us',
+      true,
+      expired,
+    );
+
+    const entry = await repository.get('558591203123');
+
+    expect(entry).toBeNull();
+  });
+
+  it('purges only entries older than the given date', async () => {
+    const old = new Date(Date.now() - 10 * DAY_MS);
+    await repository.setMany(['558591203123'], '558591203123@c.us', true, old);
+    await repository.setMany(
+      ['5511998765432'],
+      '5511998765432@c.us',
+      true,
+      new Date(),
+    );
+
+    const deleted = await repository.purge(new Date(Date.now() - 5 * DAY_MS));
+
+    expect(deleted).toBe(1);
+    expect(await repository.get('558591203123')).toBeNull();
+    expect(await repository.get('5511998765432')).not.toBeNull();
+  });
+
+  it('purges everything when no date is given', async () => {
+    await repository.setMany(
+      ['558591203123', '5585991203123'],
+      '558591203123@c.us',
+      true,
+      new Date(),
+    );
+
+    const deleted = await repository.purge();
+
+    expect(deleted).toBe(2);
+    expect((await repository.stats()).total).toBe(0);
+  });
+
+  it('reports total and verified counts', async () => {
+    await repository.setMany(
+      ['558591203123', '5585991203123'],
+      '558591203123@c.us',
+      true,
+      new Date(),
+    );
+
+    const stats = await repository.stats();
+
+    expect(stats.total).toBe(2);
+    expect(stats.verified).toBe(2);
+  });
+});

src/apps/brazilian-phone-numbers/storage/BrazilianPhoneCacheRepository.ts

@@ -0,0 +1,123 @@
+import { Knex } from 'knex';
+
+export interface BrazilianPhoneCacheEntry {
+  key: string;
+  chatId: string;
+  verified: boolean;
+  resolvedAt: Date;
+}
+
+export interface BrazilianPhoneCacheRow extends BrazilianPhoneCacheEntry {
+  id: number;
+}
+
+export interface BrazilianPhoneCacheStats {
+  total: number;
+  verified: number;
+}
+
+export class BrazilianPhoneCacheRepository {
+  static tableName = 'app_brazilian_phone_numbers_cache';
+
+  constructor(
+    private readonly knex: Knex,
+    private readonly appPk: number,
+    private readonly ttlMs: number,
+  ) {}
+
+  get tableName() {
+    return BrazilianPhoneCacheRepository.tableName;
+  }
+
+  // Entries resolved before this date are expired.
+  private ttlCutoff(): Date {
+    return new Date(Date.now() - this.ttlMs);
+  }
+
+  async get(key: string): Promise<BrazilianPhoneCacheEntry | null> {
+    const row = await this.knex(this.tableName)
+      .where({
+        app_pk: this.appPk,
+        key: key,
+      })
+      .where('resolved_at', '>=', this.ttlCutoff())
+      .first();
+    if (!row) {
+      return null;
+    }
+    return {
+      key: row.key,
+      chatId: row.chat_id,
+      verified: Boolean(row.verified),
+      resolvedAt: new Date(row.resolved_at),
+    };
+  }
+
+  async setMany(
+    keys: string[],
+    chatId: string,
+    verified: boolean,
+    resolvedAt: Date,
+  ): Promise<void> {
+    const rows = keys.map((key) => ({
+      app_pk: this.appPk,
+      key: key,
+      chat_id: chatId,
+      verified: verified,
+      resolved_at: resolvedAt,
+    }));
+    await this.knex(this.tableName)
+      .insert(rows)
+      .onConflict(['app_pk', 'key'])
+      .merge();
+  }
+
+  /**
+   * Lists cache entries for the app, sorted by id (insertion order).
+   */
+  async list(limit: number, offset: number): Promise<BrazilianPhoneCacheRow[]> {
+    const rows = await this.knex(this.tableName)
+      .where({ app_pk: this.appPk })
+      .orderBy('id', 'asc')
+      .limit(limit)
+      .offset(offset);
+    return rows.map((row) => ({
+      id: row.id,
+      key: row.key,
+      chatId: row.chat_id,
+      verified: Boolean(row.verified),
+      resolvedAt: new Date(row.resolved_at),
+    }));
+  }
+
+  /**
+   * Deletes cache entries for the app.
+   * @param olderThan Only entries resolved before this date; all entries when omitted.
+   * @returns Number of deleted entries
+   */
+  async purge(olderThan?: Date): Promise<number> {
+    const query = this.knex(this.tableName).where({ app_pk: this.appPk });
+    if (olderThan) {
+      query.where('resolved_at', '<', olderThan);
+    }
+    return await query.delete();
+  }
+
+  async stats(): Promise<BrazilianPhoneCacheStats> {
+    const row: any = await this.knex(this.tableName)
+      .where({ app_pk: this.appPk })
+      .count({ total: '*' })
+      .first();
+    const verifiedRow: any = await this.knex(this.tableName)
+      .where({
+        app_pk: this.appPk,
+        verified: true,
+      })
+      .count({ verified: '*' })
+      .first();
+    return {
+      total: Number(row?.total ?? 0),
+      verified: Number(verifiedRow?.verified ?? 0),
+    };
+  }
+}

src/apps/brazilian-phone-numbers/utils/brPhone.test.ts

@@ -0,0 +1,120 @@
+import {
+  extractPhoneDigits,
+  generateBrazilMobileLookupCandidates,
+  isBrazilCountryCode,
+  isBrazilLandline,
+  isBrazilMobile,
+  isMalformedBrazilPhone,
+  needsBrazilWhatsAppLookup,
+  normalizeBrazilMobileForSendDigits,
+  normalizeBrazilTollFreeDigits,
+  shouldSkipBrazilPhoneNormalization,
+} from './brPhone';
+
+describe('brPhone', () => {
+  it('skips groups and lids', () => {
+    expect(shouldSkipBrazilPhoneNormalization('123@g.us')).toBe(true);
+    expect(shouldSkipBrazilPhoneNormalization('123@lid')).toBe(true);
+  });
+
+  it('detects BR country code', () => {
+    expect(isBrazilCountryCode('558591203123')).toBe(true);
+    expect(isBrazilCountryCode('5491123456789')).toBe(false);
+  });
+
+  it('flags malformed BR numbers and accepts valid lengths', () => {
+    expect(isMalformedBrazilPhone('55859912')).toBe(true);
+    expect(isMalformedBrazilPhone('558591203123')).toBe(false);
+    expect(isMalformedBrazilPhone('5585991203123')).toBe(false);
+    // not a BR number, not our concern
+    expect(isMalformedBrazilPhone('123')).toBe(false);
+  });
+
+  it('detects BR landline numbers', () => {
+    expect(isBrazilLandline('558540423147')).toBe(true);
+    expect(isBrazilMobile('558540423147')).toBe(false);
+  });
+
+  it('detects BR mobile numbers', () => {
+    expect(isBrazilMobile('558591203123')).toBe(true);
+    expect(isBrazilMobile('5585991203123')).toBe(true);
+  });
+
+  it('accepts any digit after the leading 9 on a 9-digit local', () => {
+    // Brazil has no 9-digit landline, so '9' + 8 digits is always mobile.
+    // The old rule required 6-9 right after the 9 and rejected real SP lines.
+    expect(isBrazilMobile('5511953523741')).toBe(true);
+    expect(isBrazilLandline('5511953523741')).toBe(false);
+    expect(isBrazilMobile('5511912345678')).toBe(true);
+    expect(isBrazilMobile('5511902345678')).toBe(true);
+  });
+
+  it('keeps 9-digit mobiles out of the lookup range untouched', () => {
+    // DDD 11 is below the lookup range: no candidates, no WhatsApp lookup.
+    expect(needsBrazilWhatsAppLookup('5511953523741')).toBe(false);
+    expect(normalizeBrazilMobileForSendDigits('5511953523741')).toBe(
+      '5511953523741',
+    );
+  });
+
+  it('detects landlines in both DDD ranges', () => {
+    expect(isBrazilLandline('551151923057')).toBe(true);
+    expect(isBrazilLandline('558540428310')).toBe(true);
+    expect(isBrazilMobile('551151923057')).toBe(false);
+    expect(isBrazilMobile('558540428310')).toBe(false);
+  });
+
+  it('rewrites toll-free (0800) numbers to the stored form', () => {
+    // Dialed '0800' + 7 digits -> stored '55800' + 7 digits (leading 0 dropped,
+    // country code added). Both the bare and the 55-prefixed dialed forms map
+    // to the same stored number the server resolves them to.
+    expect(normalizeBrazilTollFreeDigits('08000464636')).toBe('558000464636');
+    expect(normalizeBrazilTollFreeDigits('5508000464636')).toBe('558000464636');
+  });
+
+  it('leaves non-toll-free and already-stored numbers untouched', () => {
+    // Already-stored form routes through normally, so no rewrite here.
+    expect(normalizeBrazilTollFreeDigits('558000464636')).toBeNull();
+    expect(normalizeBrazilTollFreeDigits('5585991203123')).toBeNull();
+    expect(normalizeBrazilTollFreeDigits('551151923057')).toBeNull();
+    // 0300/0500/0900 share the shape but are not handled here.
+    expect(normalizeBrazilTollFreeDigits('03001234567')).toBeNull();
+  });
+
+  it('requires lookup only for DDD 31-99 mobile numbers', () => {
+    expect(needsBrazilWhatsAppLookup('5511987654321')).toBe(false);
+    expect(needsBrazilWhatsAppLookup('558591203123')).toBe(true);
+    expect(needsBrazilWhatsAppLookup('558540423147')).toBe(false);
+  });
+
+  it('keeps send heuristic without 9 for DDD 31-99 until lookup resolves', () => {
+    expect(normalizeBrazilMobileForSendDigits('558591203123')).toBe(
+      '558591203123',
+    );
+    expect(normalizeBrazilMobileForSendDigits('555399034520')).toBe(
+      '555399034520',
+    );
+  });
+
+  it('normalizes low DDD mobile numbers for send with 9 digits', () => {
+    expect(normalizeBrazilMobileForSendDigits('551198765432')).toBe(
+      '5511998765432',
+    );
+  });
+
+  it('generates with and without 9 candidates', () => {
+    expect(generateBrazilMobileLookupCandidates('558591203123')).toEqual([
+      '558591203123',
+      '5585991203123',
+    ]);
+    expect(generateBrazilMobileLookupCandidates('5585991203123')).toEqual([
+      '558591203123',
+      '5585991203123',
+    ]);
+  });
+
+  it('extracts digits from chat ids', () => {
+    expect(extractPhoneDigits('558591203123@c.us')).toBe('558591203123');
+    expect(extractPhoneDigits('+558591203123')).toBe('558591203123');
+  });
+});

src/apps/brazilian-phone-numbers/utils/brPhone.ts

@@ -0,0 +1,178 @@
+import {
+  isJidBroadcast,
+  isJidGroup,
+  isJidMetaAI,
+  isJidNewsletter,
+  isLidUser,
+} from '@waha/core/utils/jids';
+
+const COUNTRY_CODE = '55';
+const LANDLINE_FIRST_DIGIT = /^[2-5]/;
+const MOBILE_FIRST_DIGIT = /^[6-9]/;
+
+export const BR_PHONE_DDD_LOOKUP_MIN = 31;
+export const BR_PHONE_DDD_LOOKUP_MAX = 99;
+
+// Unverified best-guesses and confirmed-negatives live only in the in-memory
+// cache with this short TTL, so a number registered later is re-checked soon.
+export const BR_PHONE_NEGATIVE_CACHE_TTL_SECONDS = 10 * 60;
+
+// A Brazil number (country code 55) must be 55 + DDD(2) + local(8 or 9) digits.
+const BR_PHONE_MIN_LENGTH = 12;
+const BR_PHONE_MAX_LENGTH = 13;
+
+export function isBrazilCountryCode(digits: string): boolean {
+  return digits.startsWith(COUNTRY_CODE);
+}
+
+export function isMalformedBrazilPhone(digits: string): boolean {
+  if (!isBrazilCountryCode(digits)) {
+    return false;
+  }
+  return (
+    digits.length < BR_PHONE_MIN_LENGTH || digits.length > BR_PHONE_MAX_LENGTH
+  );
+}
+
+export function extractPhoneDigits(value: string): string {
+  if (!value) {
+    return '';
+  }
+  const local = value.split('@')[0] ?? value;
+  return local.split(':')[0].replace(/\D/g, '');
+}
+
+export function shouldSkipBrazilPhoneNormalization(chatId: string): boolean {
+  if (!chatId) {
+    return true;
+  }
+  if (isJidGroup(chatId)) {
+    return true;
+  }
+  if (isJidBroadcast(chatId)) {
+    return true;
+  }
+  if (isLidUser(chatId)) {
+    return true;
+  }
+  if (isJidNewsletter(chatId)) {
+    return true;
+  }
+  if (isJidMetaAI(chatId)) {
+    return true;
+  }
+  if (chatId === 'me') {
+    return true;
+  }
+  return false;
+}
+
+export function isBrazilPhone(digits: string): boolean {
+  return digits.startsWith(COUNTRY_CODE) && digits.length >= 12;
+}
+
+export function getBrazilDdd(digits: string): number {
+  return parseInt(digits.substring(2, 4), 10);
+}
+
+export function getBrazilLocalPart(digits: string): string {
+  return digits.substring(4);
+}
+
+export function isBrazilLandline(digits: string): boolean {
+  if (!isBrazilPhone(digits)) {
+    return false;
+  }
+  const local = getBrazilLocalPart(digits);
+  if (local.length !== 8) {
+    return false;
+  }
+  return LANDLINE_FIRST_DIGIT.test(local);
+}
+
+export function isBrazilMobile(digits: string): boolean {
+  if (!isBrazilPhone(digits) || isBrazilLandline(digits)) {
+    return false;
+  }
+  const local = getBrazilLocalPart(digits);
+  // 8-digit local: the legacy form, missing its 9. Only 6-9 tells it apart
+  // from a landline - 2-5 is genuinely ambiguous and treated as a landline.
+  if (local.length === 8) {
+    return MOBILE_FIRST_DIGIT.test(local);
+  }
+  // 9-digit local starting with 9: unambiguously mobile. Brazil has no
+  // 9-digit landline, and the digit after the leading 9 is unrestricted -
+  // e.g. SP 11 9535-23741. Do not test it.
+  if (local.length === 9 && local[0] === '9') {
+    return true;
+  }
+  return false;
+}
+
+// Brazilian toll-free (0800) numbers are non-geographic: dialed as '0800' plus
+// 7 subscriber digits. WhatsApp stores them under country code 55 with the
+// leading 0 dropped ('08000464636' -> '558000464636'). Callers send the dialed
+// form, so map it to the stored one. The rewrite is deterministic - no WhatsApp
+// lookup, unlike the 9th-digit mobile case. Returns null when not a toll-free
+// number in a dialed form (the stored form '55800...' already routes untouched).
+const BR_TOLLFREE_DIALED = /^0800\d{7}$/;
+const BR_TOLLFREE_DIALED_CC = /^550800\d{7}$/;
+
+export function normalizeBrazilTollFreeDigits(digits: string): string | null {
+  if (BR_TOLLFREE_DIALED.test(digits)) {
+    return `${COUNTRY_CODE}${digits.slice(1)}`;
+  }
+  if (BR_TOLLFREE_DIALED_CC.test(digits)) {
+    return `${COUNTRY_CODE}${digits.slice(3)}`;
+  }
+  return null;
+}
+
+export function needsBrazilWhatsAppLookup(digits: string): boolean {
+  if (!isBrazilMobile(digits)) {
+    return false;
+  }
+  const ddd = getBrazilDdd(digits);
+  return ddd >= BR_PHONE_DDD_LOOKUP_MIN && ddd <= BR_PHONE_DDD_LOOKUP_MAX;
+}
+
+export function normalizeBrazilMobileForSendDigits(digits: string): string {
+  if (!isBrazilMobile(digits)) {
+    return digits;
+  }
+  const ddd = getBrazilDdd(digits);
+  if (ddd >= BR_PHONE_DDD_LOOKUP_MIN) {
+    return digits;
+  }
+  const local = getBrazilLocalPart(digits);
+  if (local.length === 8 && MOBILE_FIRST_DIGIT.test(local)) {
+    return `${COUNTRY_CODE}${ddd}9${local}`;
+  }
+  return digits;
+}
+
+export function generateBrazilMobileLookupCandidates(digits: string): string[] {
+  if (!isBrazilMobile(digits)) {
+    return [digits];
+  }
+  const ddd = digits.substring(2, 4);
+  const local = getBrazilLocalPart(digits);
+  let without9 = digits;
+  let with9 = digits;
+
+  if (local.length === 9 && local[0] === '9') {
+    without9 = `${COUNTRY_CODE}${ddd}${local.substring(1)}`;
+    with9 = `${COUNTRY_CODE}${ddd}${local}`;
+  } else if (local.length === 8) {
+    without9 = `${COUNTRY_CODE}${ddd}${local}`;
+    with9 = `${COUNTRY_CODE}${ddd}9${local}`;
+  }
+
+  const candidates = [without9, with9];
+  return [...new Set(candidates)];
+}
+
+export function getBrazilPhoneCacheKeys(digits: string): string[] {
+  const candidates = generateBrazilMobileLookupCandidates(digits);
+  return [...new Set([digits, ...candidates])];
+}

src/apps/calls/app.module.ts

@@ -0,0 +1,26 @@
+import { AppModule } from '@waha/apps/app_sdk/apps/definition';
+import { AppName } from '@waha/apps/app_sdk/apps/apps';
+import { CallsAppService } from '@waha/apps/calls/services/CallsAppService';
+
+const CallsAppModule: AppModule = {
+  name: AppName.calls,
+  openapi: {
+    title: 'Calls',
+    description: 'Handle incoming calls - reject, message back',
+  },
+  definition: {
+    plainkey: false,
+    queue: false,
+    migrations: false,
+    restartOnChange: true,
+    unique: true,
+  },
+  nestjs: {
+    imports: [],
+    controllers: [],
+    providers: [CallsAppService],
+  },
+  Service: CallsAppService,
+};
+
+export default CallsAppModule;

src/apps/calls/calls.module.ts

@@ -1,7 +0,0 @@
-import { CallsAppService } from '@waha/apps/calls/services/CallsAppService';
-
-export const CallsAppExports = {
-  providers: [CallsAppService],
-  imports: [],
-  controllers: [],
-};

src/apps/calls/dto/app.dto.ts

@@ -0,0 +1,8 @@
+import { App } from '@waha/apps/app_sdk/dto/app.dto';
+import { CallsAppConfig } from '@waha/apps/calls/dto/config.dto';
+import { Type } from 'class-transformer';
+
+export class CallsAppDto extends App<CallsAppConfig> {
+  @Type(() => CallsAppConfig)
+  config: CallsAppConfig;
+}

src/apps/calls/services/CallsAppService.ts

@@ -1,19 +1,14 @@
 import { Injectable } from '@nestjs/common';
 import { App } from '@waha/apps/app_sdk/dto/app.dto';
 import { IAppService } from '@waha/apps/app_sdk/services/IAppService';
+import { PluginOptions } from '@waha/core/abc/session.plugin';
 import { CallsAppConfig } from '@waha/apps/calls/dto/config.dto';
+import { CallsPlugin } from '@waha/apps/calls/services/CallsPlugin';
 import { SessionManager } from '@waha/core/abc/manager.abc';
 import { WhatsappSession } from '@waha/core/abc/session.abc';
-import { InjectPinoLogger, PinoLogger } from 'nestjs-pino';
-import { CallsListener } from '@waha/apps/calls/services/CallsListener';
 
 @Injectable()
 export class CallsAppService implements IAppService {
-  constructor(
-    @InjectPinoLogger('CallsAppService')
-    private readonly logger: PinoLogger,
-  ) {}
-
   validate(app: App<CallsAppConfig>): void {
     // The DTO validation covers structure; no extra validation rules.
     void app;
@@ -79,6 +74,14 @@ export class CallsAppService implements IAppService {
     void app;
   }
 
+  async purge(
+    manager: SessionManager,
+    app: App<CallsAppConfig>,
+  ): Promise<void> {
+    void manager;
+    void app;
+  }
+
   async enrich(
     manager: SessionManager,
     app: App<CallsAppConfig>,
@@ -87,9 +90,15 @@ export class CallsAppService implements IAppService {
     void app;
   }
 
+  plugins(app: App<CallsAppConfig>, session: WhatsappSession): PluginOptions[] {
+    void session;
+    return [CallsPlugin.with(app.config, null)];
+  }
+
   beforeSessionStart(app: App<CallsAppConfig>, session: WhatsappSession): void {
-    const listener = new CallsListener(app, session, this.logger);
-    listener.attach();
+    void app;
+    void session;
+    return;
   }
 
   afterSessionStart(app: App<CallsAppConfig>, session: WhatsappSession): void {

src/apps/calls/services/CallsPlugin.ts

@@ -1,62 +1,29 @@
-import { Subscription } from 'rxjs';
 import {
   CallsAppChannelConfig,
   CallsAppConfig,
 } from '@waha/apps/calls/dto/config.dto';
-import { Logger } from 'pino';
-import { App } from '@waha/apps/app_sdk/dto/app.dto';
-import { PinoLogger } from 'nestjs-pino';
-import { WhatsappSession } from '@waha/core/abc/session.abc';
-import { WAHAEvents, WAHAPresenceStatus } from '@waha/structures/enums.dto';
+import { SessionPlugin } from '@waha/core/abc/session.plugin';
+import { PluginEvent } from '@waha/core/abc/session.plugin.events';
 import { CallData } from '@waha/structures/calls.dto';
 import { MessageTextRequest } from '@waha/structures/chatting.dto';
+import { WAHAEvents, WAHAPresenceStatus } from '@waha/structures/enums.dto';
 import { sleep } from '@waha/utils/promiseTimeout';
+import { Observable } from 'rxjs';
 
-export class CallsListener {
-  private subscription?: Subscription;
-  private config: CallsAppConfig;
-  private readonly log: Logger;
-  private readonly session: WhatsappSession;
-
-  constructor(
-    app: App<CallsAppConfig>,
-    session: WhatsappSession,
-    logger: PinoLogger,
-  ) {
-    this.session = session;
-    this.config = app.config;
-    this.log = logger.logger.child({
-      app: 'calls',
-      session: app.session,
-    });
-  }
-
-  attach(): void {
-    this.detach();
-
-    const observable = this.session.getEventObservable(
-      WAHAEvents.CALL_RECEIVED,
-    );
-    if (!observable) {
-      this.log.warn('CALL_RECEIVED event stream is not available, skipping');
-      return;
-    }
-
-    this.subscription = observable.subscribe((payload) => {
-      this.handleCall(payload as CallData).catch((error) => {
-        this.log.error(
-          { err: error, callId: (payload as any)?.id },
+/**
+ * Rejects incoming calls and optionally sends an auto-reply message.
+ */
+export class CallsPlugin extends SessionPlugin<CallsAppConfig> {
+  @PluginEvent(WAHAEvents.CALL_RECEIVED)
+  onCallReceived(calls$: Observable<CallData>) {
+    calls$.subscribe((call: CallData) => {
+      this.handleCall(call).catch((error) => {
+        this.logger.error(
+          { err: error, callId: call?.id },
           'Failed to handle incoming call',
         );
       });
     });
-
-    this.log.info('Calls app listener is attached');
-  }
-
-  detach(): void {
-    this.subscription?.unsubscribe();
-    this.subscription = undefined;
   }
 
   private configFor(call: CallData): CallsAppChannelConfig {
@@ -65,17 +32,17 @@ export class CallsListener {
 
   private async handleCall(call: CallData): Promise<void> {
     if (!call.from) {
-      this.log.warn({ call: call?.id }, 'Incoming call has no chat id');
+      this.logger.warn({ call: call?.id }, 'Incoming call has no chat id');
       return;
     }
     if (!call.id) {
-      this.log.warn({ from: call.from }, 'Incoming call has no from');
+      this.logger.warn({ from: call.from }, 'Incoming call has no from');
       return;
     }
 
     const config = this.configFor(call);
     if (!config) {
-      this.log.warn({ callId: call.id }, 'No calls config found, skipping');
+      this.logger.warn({ callId: call.id }, 'No calls config found, skipping');
       return;
     }
 
@@ -84,7 +51,7 @@ export class CallsListener {
     const shouldMessage = message.length > 0;
 
     if (!shouldReject && !shouldMessage) {
-      this.log.debug(
+      this.logger.debug(
         { callId: call.id, chatId: call.from },
         'No actions configured for this call',
       );
@@ -105,16 +72,19 @@ export class CallsListener {
   }
 
   private async rejectCall(call: CallData): Promise<void> {
-    this.log.debug({ from: call.from, id: call.id }, 'Rejecting incoming call');
+    this.logger.debug(
+      { from: call.from, id: call.id },
+      'Rejecting incoming call',
+    );
     await this.session.rejectCall(call.from, call.id);
-    this.log.info({ from: call.from, id: call.id }, 'Call rejected');
+    this.logger.info({ from: call.from, id: call.id }, 'Call rejected');
   }
 
   private async replyWithTyping(
     chatId: string,
     message: string,
   ): Promise<void> {
-    this.log.info(
+    this.logger.info(
       { chatId: chatId },
       'Sending auto-response for rejected call',
     );
@@ -132,7 +102,7 @@ export class CallsListener {
     try {
       await this.session.setPresence(WAHAPresenceStatus.TYPING, chatId);
     } catch (error) {
-      this.log.warn(
+      this.logger.warn(
         { err: error, chatId: chatId },
         'Failed to set typing presence before reply',
       );
@@ -146,7 +116,7 @@ export class CallsListener {
     try {
       await this.session.setPresence(WAHAPresenceStatus.PAUSED, chatId);
     } catch (error) {
-      this.log.warn(
+      this.logger.warn(
         { err: error, chatId: chatId },
         'Failed to clear typing presence after reply',
       );

src/apps/chatwoot/api/chatwoot.locales.controller.ts

@@ -1,6 +1,6 @@
 import { Controller, Get } from '@nestjs/common';
 import { sortBy } from 'lodash';
-import { ApiOperation, ApiSecurity, ApiTags } from '@nestjs/swagger';
+import { ApiOperation, ApiSecurity } from '@nestjs/swagger';
 import { i18n } from '@waha/apps/chatwoot/i18n';
 
 interface LanguageResponse {
@@ -10,7 +10,6 @@ interface LanguageResponse {
 
 @Controller('api/apps/chatwoot')
 @ApiSecurity('api_key')
-@ApiTags('🧩 Apps')
 export class ChatwootLocalesController {
   @Get('locales')
   @ApiOperation({

src/apps/chatwoot/api/chatwoot.webhook.controller.ts

@@ -5,7 +5,7 @@ import {
   Param,
   Post,
 } from '@nestjs/common';
-import { ApiOperation, ApiTags } from '@nestjs/swagger';
+import { ApiOperation } from '@nestjs/swagger';
 import { IsCommandsChat } from '@waha/apps/chatwoot/client/ids';
 import { EventName, MessageType } from '@waha/apps/chatwoot/client/types';
 import { InboxData } from '@waha/apps/chatwoot/consumers/types';
@@ -15,7 +15,6 @@ import { AppRepository } from '@waha/apps/app_sdk/storage/AppRepository';
 import { CommandPrefix } from '@waha/apps/chatwoot/cli';
 
 @Controller('webhooks/chatwoot/')
-@ApiTags('🧩 Apps')
 export class ChatwootWebhookController {
   constructor(
     private readonly chatWootQueueService: ChatWootQueueService,

src/apps/chatwoot/app.module.ts

@@ -1,3 +1,5 @@
+import { AppModule } from '@waha/apps/app_sdk/apps/definition';
+import { AppName } from '@waha/apps/app_sdk/apps/apps';
 import { RegisterAppQueue } from '@waha/apps/app_sdk/BullUtils';
 import {
   ExponentialRetriesJobOptions,
@@ -37,10 +39,15 @@ import { TaskContactsPullConsumer } from '@waha/apps/chatwoot/consumers/task/con
 import { TaskMessagesPullConsumer } from '@waha/apps/chatwoot/consumers/task/messages.pull';
 import { BullModule } from '@nestjs/bullmq';
 import { QueueManager } from '@waha/apps/chatwoot/services/QueueManager';
+import { HttpPathsRegistration } from '@waha/plugins/http.paths.module';
 
 const CONTROLLERS = [ChatwootWebhookController, ChatwootLocalesController];
 
 const IMPORTS = lodash.flatten([
+  HttpPathsRegistration({
+    prefix: '/webhooks/',
+    include: { authBasic: false },
+  }),
   BullModule.registerFlowProducer({
     name: FlowProducerName.MESSAGES_PULL_FLOW,
   }),
@@ -160,8 +167,25 @@ const PROVIDERS = [
   QueueManager,
 ];
 
-export const ChatWootExports = {
-  providers: PROVIDERS,
-  imports: IMPORTS,
-  controllers: CONTROLLERS,
+const ChatWootAppModule: AppModule = {
+  name: AppName.chatwoot,
+  openapi: {
+    title: 'Chatwoot',
+    description: 'Chatwoot integration',
+  },
+  definition: {
+    plainkey: true,
+    queue: true,
+    migrations: true,
+    restartOnChange: true,
+    unique: true,
+  },
+  nestjs: {
+    imports: IMPORTS,
+    controllers: CONTROLLERS,
+    providers: PROVIDERS,
+  },
+  Service: ChatWootAppService,
 };
+
+export default ChatWootAppModule;

src/apps/chatwoot/client/ContactConversationService.ts

@@ -24,6 +24,21 @@ import { AttributeKey } from '@waha/apps/chatwoot/const';
 export interface ContactInfo {
   ChatId(): string;
 
+  /**
+   * Linked id - @lid, null when unknown
+   */
+  LidId(): Promise<string | null>;
+
+  /**
+   * Phone number jid - @c.us, null when unknown
+   */
+  JidId(): Promise<string | null>;
+
+  /**
+   * Resolved E.164 phone number, null when not applicable
+   */
+  PhoneNumberE164(): Promise<string | null>;
+
   AvatarUrl(): Promise<string | null>;
 
   Attributes(): Promise<any>;

src/apps/chatwoot/client/ContactService.ts

@@ -40,6 +40,18 @@ export function sanitizeName(name: string) {
   return clean.slice(0, 255).trim();
 }
 
+function SearchClauseEqualTo(key: string, values: string[]) {
+  // equal_to with multiple values acts as IN
+  return {
+    attribute_key: key,
+    filter_operator: 'equal_to',
+    values: values,
+    attribute_model: 'standard',
+    custom_attribute_type: '',
+    query_operator: 'OR',
+  };
+}
+
 export class ContactService {
   constructor(
     private config: ChatWootAPIConfig,
@@ -52,8 +64,11 @@ export class ContactService {
     contactInfo: ContactInfo,
   ): Promise<[ContactResponse, boolean]> {
     const chatId = contactInfo.ChatId();
-    let contact = await this.searchByAnyID(chatId);
+    const lid = await contactInfo.LidId();
+    const jid = await contactInfo.JidId();
+    let contact = await this.search(chatId, lid, jid);
     if (contact) {
+      await this.upsertPhoneNumber(contact, contactInfo);
       return [contact, false];
     }
 
@@ -62,73 +77,94 @@ export class ContactService {
     return [contact, true];
   }
 
-  async searchByAnyID(chatId: string): Promise<ContactResponse | null> {
-    const payload: any[] = [
-      {
-        attribute_key: AttributeKey.WA_CHAT_ID,
-        filter_operator: 'equal_to',
-        values: [chatId],
-        attribute_model: 'standard',
-        custom_attribute_type: '',
-        query_operator: 'OR',
-      },
-      {
-        attribute_key: AttributeKey.WA_JID,
-        filter_operator: 'equal_to',
-        values: [chatId],
-        attribute_model: 'standard',
-        custom_attribute_type: '',
-        query_operator: 'OR',
-      },
-      {
-        attribute_key: AttributeKey.WA_LID,
-        filter_operator: 'equal_to',
-        values: [chatId],
-        attribute_model: 'standard',
-        custom_attribute_type: '',
-        query_operator: 'OR',
-      },
-      {
-        attribute_key: 'identifier',
-        filter_operator: 'equal_to',
-        values: [chatId],
-        attribute_model: 'standard',
-        custom_attribute_type: '',
-      },
-    ];
-
-    if (isJidCusFormat(chatId)) {
-      // Search by phone
-      const phoneNumberE164 = E164Parser.fromJid(chatId);
-      const phone_number = phoneNumberE164.replace('+', '');
-      payload[payload.length - 1].query_operator = 'OR';
-      payload.push({
-        attribute_key: 'phone_number',
-        filter_operator: 'equal_to',
-        values: [phone_number],
-      });
+  async search(
+    chatId: string,
+    lid: string | null,
+    jid: string | null,
+  ): Promise<ContactResponse | null> {
+    // The chat id attribute holds the latest used address, so match any known form there
+    const chatIds = lodash.uniq(lodash.compact([chatId, jid, lid]));
+    if (chatIds.length == 0) {
+      return null;
     }
 
+    const payload: any[] = [
+      SearchClauseEqualTo(AttributeKey.WA_CHAT_ID, chatIds),
+      SearchClauseEqualTo('identifier', chatIds),
+    ];
+    if (jid) {
+      payload.push(SearchClauseEqualTo(AttributeKey.WA_JID, [jid]));
+    }
+    if (lid) {
+      payload.push(SearchClauseEqualTo(AttributeKey.WA_LID, [lid]));
+    }
+    if (jid && isJidCusFormat(jid)) {
+      // Search by phone - both with and without the leading '+'
+      const phoneNumberE164 = E164Parser.fromJid(jid);
+      let phones = [phoneNumberE164, phoneNumberE164.replace('+', '')];
+      payload.push(SearchClauseEqualTo('phone_number', phones));
+    }
+    // The terminal clause must have no query_operator
+    delete payload[payload.length - 1].query_operator;
+
     const response: any = await this.accountAPI.contacts.filter({
       accountId: this.config.accountId,
       payload: payload as any,
     });
 
     const contacts = response.payload;
-    if (contacts.length == 0) {
+    const candidates: ContactResponse[] = [];
+    for (const contact of contacts) {
+      const inboxes = lodash.filter(contact.contact_inboxes, {
+        inbox: { id: this.config.inboxId },
+      });
+      if (inboxes.length == 0) {
+        continue;
+      }
+      candidates.push({
+        data: contact,
+        sourceId: inboxes[0].source_id,
+      });
+    }
+    if (candidates.length == 0) {
       return null;
     }
-    const contact = contacts[0];
-    const inboxes = lodash.filter(contact.contact_inboxes, {
-      inbox: { id: this.config.inboxId },
-    });
-    if (inboxes.length == 0) {
-      return null;
+    // Prefer a contact with a phone number over a phone-less duplicate
+    const withPhone = candidates.find((candidate) =>
+      Boolean(candidate.data.phone_number),
+    );
+    return withPhone ?? candidates[0];
+  }
+
+  private async upsertPhoneNumber(
+    contact: ContactResponse,
+    contactInfo: ContactInfo,
+  ): Promise<void> {
+    if (contact.data.phone_number) {
+      return;
+    }
+    const phoneNumberE164 = await contactInfo.PhoneNumberE164();
+    if (!phoneNumberE164) {
+      return;
+    }
+    try {
+      await this.accountAPI.contacts.update({
+        id: contact.data.id,
+        accountId: this.config.accountId,
+        data: { phone_number: phoneNumberE164 },
+      });
+      contact.data.phone_number = phoneNumberE164;
+      this.logger.info(
+        `Set phone_number for contact.id: ${
+          contact.data.id
+        }, chat.id: ${contactInfo.ChatId()}`,
+      );
+    } catch (err) {
+      // Chatwoot returns 422 when another contact already owns the phone number
+      this.logger.warn(
+        `Error updating phone_number for contact.id: ${contact.data.id} - ${err}`,
+      );
     }
-    return {
-      data: contact,
-      sourceId: inboxes[0].source_id,
-    };
   }
 
   public async upsertCustomAttributes(

src/apps/chatwoot/client/ids.ts

@@ -1,7 +1,7 @@
 import { AttributeKey, INBOX_CONTACT_CHAT_ID } from '@waha/apps/chatwoot/const';
 import * as lodash from 'lodash';
 import { WhatsAppMessage } from '@waha/apps/chatwoot/storage';
-import { buildMessageId } from '@waha/core/engines/noweb/session.noweb.core';
+import { buildMessageId } from '@waha/core/engines/noweb/utils';
 import { isLidUser, normalizeJid } from '@waha/core/utils/jids';
 
 export function GetJID(contact: any): string | null {

src/apps/chatwoot/consumers/inbox/message_created.ts

@@ -221,10 +221,23 @@ export class MessageHandler {
       mentions: mentions,
     };
     const session = this.session;
-    await session.readMessages(chatId);
-    await session.startTyping({ chatId: chatId, session: '' });
+    // Best effort - do not block sending on read-receipt failure
+    await session.readMessages(chatId).catch((err) => {
+      this.logger.warn(
+        `ChatWoot => WhatsApp: error reading messages in chat '${chatId}': ${err}`,
+      );
+    });
+    await session.startTyping({ chatId: chatId, session: '' }).catch((err) => {
+      this.logger.warn(
+        `ChatWoot => WhatsApp: error starting typing in chat '${chatId}': ${err}`,
+      );
+    });
     await sleep(2000);
-    await session.stopTyping({ chatId: chatId, session: '' });
+    await session.stopTyping({ chatId: chatId, session: '' }).catch((err) => {
+      this.logger.warn(
+        `ChatWoot => WhatsApp: error stopping typing in chat '${chatId}': ${err}`,
+      );
+    });
     const msg = await session.sendText(request);
     return msg;
   }

src/apps/chatwoot/consumers/utils.ts

@@ -0,0 +1,13 @@
+export function clearContent(attachments) {
+  /**
+   * Remove actual base64 "content" from attachment
+   */
+  if (!attachments) {
+    return attachments;
+  }
+  return attachments.map((attachment) => {
+    attachment = { ...attachment };
+    attachment.content = '';
+    return attachment;
+  });
+}

src/apps/chatwoot/consumers/waha/base.ts

@@ -39,6 +39,7 @@ import {
   ChatWootAppConfig,
   ChatWootConfig,
 } from '@waha/apps/chatwoot/dto/config.dto';
+import { clearContent } from '@waha/apps/chatwoot/consumers/utils';
 
 export function ListenEventsForChatWoot(config: ChatWootConfig) {
   const events = [
@@ -319,6 +320,7 @@ export abstract class MessageBaseHandler<
       this.session,
       EngineHelper.ChatID(payload as any),
       this.l,
+      EngineHelper.PhoneNumber(payload as any),
     );
     const conversation = await this.repo.ConversationByContact(contactInfo);
     this.info.onConversationId(conversation.conversationId);
@@ -329,6 +331,8 @@ export abstract class MessageBaseHandler<
       `Created message as '${message.message_type}' from WhatsApp: ${response.id}`,
     );
     await this.saveMapping(response, payload);
+    // Clear attachments content to avoid saving it in the task result
+    message.attachments = clearContent(message.attachments);
     return message;
   }
 

src/apps/chatwoot/contacts/InboxContactInfo.ts

@@ -14,6 +14,18 @@ export class InboxContactInfo implements ContactInfo {
     return INBOX_CONTACT_CHAT_ID;
   }
 
+  async LidId(): Promise<string | null> {
+    return null;
+  }
+
+  async JidId(): Promise<string | null> {
+    return null;
+  }
+
+  async PhoneNumberE164(): Promise<string | null> {
+    return null;
+  }
+
   async AvatarUrl() {
     return this.l.key(TKey.APP_INBOX_CONTACT_AVATAR_URL).render();
   }

src/apps/chatwoot/contacts/WhatsAppContactInfo.ts

@@ -32,6 +32,18 @@ abstract class ChatContactInfo implements ContactInfo {
     return this.chatId;
   }
 
+  async LidId(): Promise<string | null> {
+    return null;
+  }
+
+  async JidId(): Promise<string | null> {
+    return null;
+  }
+
+  async PhoneNumberE164(): Promise<string | null> {
+    return null;
+  }
+
   abstract AvatarUrl(): Promise<string | null>;
 
   abstract Attributes(): Promise<any>;
@@ -53,6 +65,19 @@ class JidContactInfo extends ChatContactInfo {
     return await this.session.findLIDByPN(this.chatId);
   }
 
+  async LidId(): Promise<string | null> {
+    const lid = await this.fetchLid().catch(() => null);
+    return lid || null;
+  }
+
+  async JidId(): Promise<string | null> {
+    return this.chatId;
+  }
+
+  async PhoneNumberE164(): Promise<string | null> {
+    return E164Parser.fromJid(this.chatId);
+  }
+
   @CacheAsync()
   async Attributes() {
     const attributes = {
@@ -67,7 +92,9 @@ class JidContactInfo extends ChatContactInfo {
   }
 
   async PublicContactCreate(): Promise<Contact> {
-    const contact: any = await this.session.getContact(this.chatId);
+    const contact: any = await this.session
+      .getContact(this.chatId)
+      .catch(() => null);
     const name =
       contact?.name || contact?.pushName || contact?.pushname || this.chatId;
     const phoneNumberE164 = E164Parser.fromJid(this.chatId);
@@ -89,15 +116,44 @@ class JidContactInfo extends ChatContactInfo {
  * LID contact info
  */
 class LidContactInfo extends ChatContactInfo {
+  constructor(
+    session: WAHASessionAPI,
+    chatId: string,
+    locale: Locale,
+    private pn: string | null = null,
+  ) {
+    super(session, chatId, locale);
+  }
+
   @CacheAsync()
   async jid() {
-    const pn = await this.session.findPNByLid(this.chatId);
+    let pn = this.pn;
+    if (!pn) {
+      pn = await this.session.findPNByLid(this.chatId);
+    }
     if (!pn) {
       return null;
     }
     return new JidContactInfo(this.session, pn, this.locale);
   }
 
+  async LidId(): Promise<string | null> {
+    return this.chatId;
+  }
+
+  async JidId(): Promise<string | null> {
+    const jid = await this.jid();
+    return jid?.ChatId() ?? null;
+  }
+
+  async PhoneNumberE164(): Promise<string | null> {
+    const jid = await this.jid();
+    if (!jid) {
+      return null;
+    }
+    return await jid.PhoneNumberE164();
+  }
+
   async AvatarUrl(): Promise<string | null> {
     const jid = await this.jid();
     if (jid) {
@@ -123,10 +179,15 @@ class LidContactInfo extends ChatContactInfo {
     if (jid) {
       result = await jid.PublicContactCreate();
     } else {
+      const contact: any = await this.session
+        .getContact(this.chatId)
+        .catch(() => null);
+      const name =
+        contact?.name || contact?.pushName || contact?.pushname || this.chatId;
       result = {
         inbox_id: 0,
         identifier: this.chatId,
-        name: this.chatId,
+        name: name,
       };
     }
     result.custom_attributes = await this.Attributes();
@@ -261,6 +322,7 @@ export function WhatsAppContactInfo(
   session: WAHASessionAPI,
   chatId: string,
   locale: Locale,
+  pn: string | null = null,
 ): ContactInfo {
   if (isJidGroup(chatId)) {
     return new GroupContactInfo(session, chatId, locale);
@@ -271,7 +333,7 @@ export function WhatsAppContactInfo(
   } else if (isJidBroadcast(chatId)) {
     return new BroadcastContactInfo(session, chatId, locale);
   } else if (isLidUser(chatId)) {
-    return new LidContactInfo(session, normalizeJid(chatId), locale);
+    return new LidContactInfo(session, normalizeJid(chatId), locale, pn);
   } else if (isPnUser(chatId)) {
     return new JidContactInfo(session, chatId, locale);
   } else {

src/apps/chatwoot/dto/app.dto.ts

@@ -0,0 +1,8 @@
+import { App } from '@waha/apps/app_sdk/dto/app.dto';
+import { ChatWootAppConfig } from '@waha/apps/chatwoot/dto/config.dto';
+import { Type } from 'class-transformer';
+
+export class ChatWootAppDto extends App<ChatWootAppConfig> {
+  @Type(() => ChatWootAppConfig)
+  config: ChatWootAppConfig;
+}

src/apps/chatwoot/services/ChatWootAppService.ts

@@ -1,11 +1,13 @@
 import { Injectable, UnprocessableEntityException } from '@nestjs/common';
 import { IAppService } from '@waha/apps/app_sdk/services/IAppService';
+import { PluginOptions } from '@waha/core/abc/session.plugin';
 import { CacheForConfig } from '@waha/apps/chatwoot/cache/ConversationCache';
 import { CHATWOOT_CUSTOM_ATTRIBUTES } from '@waha/apps/chatwoot/const';
 import { ChatWootAppConfig } from '@waha/apps/chatwoot/dto/config.dto';
 import { ChatWootScheduleService } from '@waha/apps/chatwoot/services/ChatWootScheduleService';
 import { ChatWootWAHAQueueService } from '@waha/apps/chatwoot/services/ChatWootWAHAQueueService';
 import { App } from '@waha/apps/chatwoot/storage';
+import { AppDB } from '@waha/apps/app_sdk/storage/types';
 import { SessionManager } from '@waha/core/abc/manager.abc';
 import { WhatsappSession } from '@waha/core/abc/session.abc';
 import { InjectPinoLogger, PinoLogger } from 'nestjs-pino';
@@ -111,6 +113,17 @@ export class ChatWootAppService implements IAppService {
     void app;
   }
 
+  async purge(
+    manager: SessionManager,
+    app: App<ChatWootAppConfig>,
+  ): Promise<void> {
+    const appDb = app as unknown as AppDB;
+    const knex = manager.store.getWAHADatabase();
+    const di = new DIContainer(appDb.pk, app.config, this.logger, knex);
+    await di.MessageMappingService().purge();
+    this.cleanCache(app);
+  }
+
   async enrich(
     manager: SessionManager,
     app: App<ChatWootAppConfig>,
@@ -152,6 +165,15 @@ export class ChatWootAppService implements IAppService {
     await conversation.incoming(updated);
   }
 
+  plugins(
+    app: App<ChatWootAppConfig>,
+    session: WhatsappSession,
+  ): PluginOptions[] {
+    void app;
+    void session;
+    return [];
+  }
+
   beforeSessionStart(app: App<ChatWootAppConfig>, session: WhatsappSession) {
     this.chatWootWAHAQueueService.listenEvents(app, session);
   }

src/apps/chatwoot/storage/ChatwootMessageRepository.ts

@@ -69,4 +69,11 @@ export class ChatwootMessageRepository {
       .del();
     return result;
   }
+
+  /**
+   * Deletes all rows for the app.
+   */
+  async deleteAllWithTrx(trx: Knex.Transaction): Promise<number> {
+    return await trx(this.tableName).where({ app_pk: this.appPk }).delete();
+  }
 }

src/apps/chatwoot/storage/MessageMappingRepository.ts

@@ -90,4 +90,11 @@ export class MessageMappingRepository {
       .orderBy('id', 'desc')
       .first();
   }
+
+  /**
+   * Deletes all rows for the app.
+   */
+  async deleteAllWithTrx(trx: Knex.Transaction): Promise<number> {
+    return await trx(this.tableName).where({ app_pk: this.appPk }).delete();
+  }
 }

src/apps/chatwoot/storage/MessageMappingService.ts

@@ -44,6 +44,26 @@ export class MessageMappingService {
     }
   }
 
+  /**
+   * Deletes all stored messages and mappings for the app.
+   */
+  async purge(): Promise<number> {
+    const trx = await this.knex.transaction();
+    try {
+      const mappings =
+        await this.messageMappingRepository.deleteAllWithTrx(trx);
+      const chatwoot =
+        await this.chatwootMessageRepository.deleteAllWithTrx(trx);
+      const whatsapp =
+        await this.whatsAppMessageRepository.deleteAllWithTrx(trx);
+      await trx.commit();
+      return mappings + chatwoot + whatsapp;
+    } catch (e) {
+      await trx.rollback();
+      throw e;
+    }
+  }
+
   async map(
     chatwoot: ChatwootMessage,
     whatsapp: WhatsAppMessage,

src/apps/chatwoot/storage/WhatsAppMessageRepository.ts

@@ -69,4 +69,11 @@ export class WhatsAppMessageRepository {
       .del();
     return result;
   }
+
+  /**
+   * Deletes all rows for the app.
+   */
+  async deleteAllWithTrx(trx: Knex.Transaction): Promise<number> {
+    return await trx(this.tableName).where({ app_pk: this.appPk }).delete();
+  }
 }

src/apps/chatwoot/waha/engines.ts

@@ -5,7 +5,12 @@ import { WAHAEngine } from '@waha/structures/enums.dto';
 import { getEngineName } from '@waha/version';
 import { Message as MessageInstance } from 'whatsapp-web.js/src/structures';
 import { Jid } from '@waha/core/engines/const';
-import { isLidUser, isPnUser, toCusFormat } from '@waha/core/utils/jids';
+import {
+  isLidUser,
+  isPnUser,
+  jidsFromKey,
+  toCusFormat,
+} from '@waha/core/utils/jids';
 import { parseMessageIdSerialized } from '@waha/core/utils/ids';
 import { WAMessage } from '@waha/structures/responses.dto';
 import { CallData } from '@waha/structures/calls.dto';
@@ -22,6 +27,12 @@ export interface QuotedMedia {
 interface IEngineHelper {
   ChatID(message: WAMessage | any): string;
 
+  /**
+   * Phone number chat id (@c.us) of the DM contact extracted from the message payload
+   * (alt jid fields), when the engine provides it. Null otherwise.
+   */
+  PhoneNumber(message: WAMessage | any): string | null;
+
   CallChatID(call: CallData | any): string;
 
   IsReplyToStatus(
@@ -49,6 +60,15 @@ class NOWEBHelper implements IEngineHelper {
     return message.from;
   }
 
+  PhoneNumber(message: WAMessage | any): string | null {
+    const key = message._data?.key;
+    if (!key) {
+      return null;
+    }
+    const jids = jidsFromKey(key);
+    return pnChatIdOrNull(jids?.pn);
+  }
+
   CallChatID(call: CallData): string {
     return call.from;
   }
@@ -100,6 +120,21 @@ class GOWSHelper implements IEngineHelper {
     return message.from;
   }
 
+  PhoneNumber(message: WAMessage | any): string | null {
+    const info = message._data?.Info;
+    if (!info) {
+      return null;
+    }
+    // SenderAlt / RecipientAlt carry the phone number for @lid-addressed chats
+    let pn: string | null;
+    if (info.IsFromMe) {
+      pn = info.RecipientAlt || null;
+    } else {
+      pn = info.SenderAlt || null;
+    }
+    return pnChatIdOrNull(pn);
+  }
+
   CallChatID(call: CallData): string {
     return call._data?.CallCreator || call.from;
   }
@@ -156,6 +191,11 @@ class WEBJSHelper implements IEngineHelper {
     return message._data?.id?.remote || message.from;
   }
 
+  PhoneNumber(message: WAMessage | any): string | null {
+    void message;
+    return null;
+  }
+
   CallChatID(call: CallData): string {
     return call.from;
   }
@@ -222,6 +262,11 @@ class WPPHelper implements IEngineHelper {
     return toCusFormat(parseMessageIdSerialized(message.id as any).remoteJid);
   }
 
+  PhoneNumber(message: WAMessage | any): string | null {
+    void message;
+    return null;
+  }
+
   CallChatID(call: CallData): string {
     return call.from;
   }
@@ -367,6 +412,17 @@ function extractBrowserQuotedMedia(replyData: any): QuotedMedia | null {
   };
 }
 
+function pnChatIdOrNull(pn: string | null | undefined): string | null {
+  if (!pn) {
+    return null;
+  }
+  const chatId = toCusFormat(pn);
+  if (isPnUser(chatId)) {
+    return chatId;
+  }
+  return null;
+}
+
 function preferPnChats(chats: string[]): string[] {
   const unique = lodash.uniq(chats ?? []);
   const hasPn = unique.some(isPnUser);

src/apps/mcp/api/mcp.controller.ts

@@ -1,10 +1,8 @@
 import { Controller, Post, Req, Res } from '@nestjs/common';
-import { ApiTags } from '@nestjs/swagger';
 import type { Request, Response } from 'express';
 import { McpService } from '../mcp.service';
 
 @Controller('mcp')
-@ApiTags('🧩 Apps')
 export class McpController {
   constructor(private readonly mcp: McpService) {}
 

src/apps/mcp/app.module.ts

@@ -0,0 +1,34 @@
+import { AppModule } from '@waha/apps/app_sdk/apps/definition';
+import { AppName } from '@waha/apps/app_sdk/apps/apps';
+import { McpController } from '@waha/apps/mcp/api/mcp.controller';
+import { McpService } from '@waha/apps/mcp/mcp.service';
+import { McpAppService } from '@waha/apps/mcp/services/McpAppService';
+import { HttpPathsRegistration } from '@waha/plugins/http.paths.module';
+
+const McpAppModule: AppModule = {
+  name: AppName.mcp,
+  openapi: {
+    title: 'MCP',
+    description: 'Model Context Protocol (MCP) server for AI clients',
+  },
+  definition: {
+    plainkey: false,
+    queue: false,
+    migrations: false,
+    restartOnChange: false,
+    unique: false,
+  },
+  nestjs: {
+    imports: [
+      HttpPathsRegistration(
+        { prefix: '/mcp', include: { authBasic: false } },
+        { prefix: 'mcp', include: { authApiKey: true } },
+      ),
+    ],
+    controllers: [McpController],
+    providers: [McpService, McpAppService],
+  },
+  Service: McpAppService,
+};
+
+export default McpAppModule;

src/apps/mcp/dto/app.dto.ts

@@ -0,0 +1,8 @@
+import { App } from '@waha/apps/app_sdk/dto/app.dto';
+import { McpAppConfig } from '@waha/apps/mcp/dto/config.dto';
+import { Type } from 'class-transformer';
+
+export class McpAppDto extends App<McpAppConfig> {
+  @Type(() => McpAppConfig)
+  config: McpAppConfig;
+}

src/apps/mcp/mcp.module.ts

@@ -1,9 +0,0 @@
-import { McpController } from '@waha/apps/mcp/api/mcp.controller';
-import { McpService } from '@waha/apps/mcp/mcp.service';
-import { McpAppService } from '@waha/apps/mcp/services/McpAppService';
-
-export const McpModuleExports = {
-  imports: [],
-  controllers: [McpController],
-  providers: [McpService, McpAppService],
-};

src/apps/mcp/mcp.service.ts

@@ -8,6 +8,7 @@ import { SessionTools } from '@waha/apps/mcp/tools/sessions.tools';
 import { ChatTools } from '@waha/apps/mcp/tools/chats.tools';
 import { WAHASelf } from '@waha/apps/app_sdk/waha/WAHASelf';
 import { ApiTools } from '@waha/apps/mcp/tools/api.tools';
+import { AppsTools } from '@waha/apps/mcp/tools/apps.tools';
 import { CallTools } from '@waha/apps/mcp/tools/calls.tools';
 import { ChannelTools } from '@waha/apps/mcp/tools/channels.tools';
 import { ContactTools } from '@waha/apps/mcp/tools/contacts.tools';
@@ -44,6 +45,7 @@ export class McpService {
       new StatusTools(api),
       new ServerTools(api),
       new KeysTools(api),
+      new AppsTools(api),
     ]);
     const transport = new StreamableHTTPServerTransport({
       sessionIdGenerator: undefined, // stateless

src/apps/mcp/services/McpAppService.ts

@@ -1,6 +1,7 @@
 import { Injectable, UnprocessableEntityException } from '@nestjs/common';
 import { App } from '@waha/apps/app_sdk/dto/app.dto';
 import { IAppService } from '@waha/apps/app_sdk/services/IAppService';
+import { PluginOptions } from '@waha/core/abc/session.plugin';
 import { AppRepository } from '@waha/apps/app_sdk/storage/AppRepository';
 import { McpAppConfig } from '@waha/apps/mcp/dto/config.dto';
 import { SessionManager } from '@waha/core/abc/manager.abc';
@@ -102,6 +103,11 @@ export class McpAppService implements IAppService {
     await this.deleteKey(manager, app);
   }
 
+  async purge(manager: SessionManager, app: App<McpAppConfig>): Promise<void> {
+    void manager;
+    void app;
+  }
+
   async enrich(manager: SessionManager, app: App<McpAppConfig>): Promise<void> {
     const keyId = app.config?.key_id;
     if (!keyId) {
@@ -114,6 +120,12 @@ export class McpAppService implements IAppService {
     app.config = { ...(app.config ?? {}), key: keyDto.key } as McpAppConfig;
   }
 
+  plugins(app: App<McpAppConfig>, session: WhatsappSession): PluginOptions[] {
+    void app;
+    void session;
+    return [];
+  }
+
   beforeSessionStart(app: App<McpAppConfig>, session: WhatsappSession): void {
     void app;
     void session;

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

@@ -0,0 +1,30 @@
+import { WAHASelf } from '@waha/apps/app_sdk/waha/WAHASelf';
+import { McpController } from '@waha/apps/mcp/decorators/controller';
+import { Tool } from '@waha/apps/mcp/decorators/tool';
+import { AppPurgeInput } from '@waha/apps/mcp/tools/apps.zod';
+import { z } from 'zod';
+
+export class AppsTools extends McpController {
+  constructor(api: WAHASelf) {
+    super(api);
+  }
+
+  @Tool('apps-purge', {
+    title: 'Purge app storage',
+    description:
+      "Purge an app's stored data (messages, caches) for a session. " +
+      'The app itself stays configured and keeps working.',
+    inputSchema: AppPurgeInput,
+    annotations: {
+      readOnlyHint: false,
+      destructiveHint: true,
+      idempotentHint: true,
+    },
+  })
+  async purge({ app, session }: z.infer<typeof AppPurgeInput>) {
+    return this.textRequest({
+      method: 'POST',
+      url: `/api/apps/${app}/${session}/purge`,
+    });
+  }
+}

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

@@ -0,0 +1,7 @@
+import { AppName } from '@waha/apps/app_sdk/apps/apps';
+import { z } from 'zod';
+
+export const AppPurgeInput = z.object({
+  app: z.nativeEnum(AppName).describe('App name'),
+  session: z.string().describe('Session name'),
+});

src/apps/mcp/tools/channels.tools.ts

@@ -107,7 +107,10 @@ export class ChannelTools extends McpController {
     return this.textRequest({
       method: 'GET',
       url: `/api/${session}/channels/${id}/messages/preview`,
-      params: query,
+      params: {
+        ...query,
+        downloadMediaMimetypes: query.downloadMediaMimetypes?.join(','),
+      },
     });
   }
 

src/apps/mcp/tools/chats.tools.ts

@@ -145,7 +145,8 @@ export class ChatTools extends McpController {
     description:
       'Get messages in a chat. ' +
       'To retrieve all messages, paginate by incrementing the offset by limit until the returned array is empty or shorter than the limit. ' +
-      'To fetch media for a specific message, use chats-get-message with that message id and downloadMedia=true instead of fetching it here.',
+      'To fetch media for a specific message, use chats-get-message with that message id and downloadMedia=true instead of fetching it here. ' +
+      'Use downloadMediaMimetypes to download only media with the given mimetypes (prefix match).',
     inputSchema: ChatMessagesInput,
     annotations: {
       readOnlyHint: true,
@@ -162,7 +163,10 @@ export class ChatTools extends McpController {
     const response = await this.request({
       method: 'GET',
       url: `/api/${session}/chats/${chatId}/messages`,
-      params: query,
+      params: {
+        ...query,
+        downloadMediaMimetypes: query.downloadMediaMimetypes?.join(','),
+      },
     });
     let messages = response.data;
     if (!_data && Array.isArray(messages)) {
@@ -229,7 +233,10 @@ export class ChatTools extends McpController {
     const result = await this.textRequest({
       method: 'GET',
       url: `/api/${session}/chats/${chatId}/messages/${messageId}`,
-      params: query,
+      params: {
+        ...query,
+        downloadMediaMimetypes: query.downloadMediaMimetypes?.join(','),
+      },
     });
     if (query.downloadMedia) {
       const mediaKey = await this.mediaApiKey(session);

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

@@ -8,6 +8,7 @@ import {
   GroupDescriptionInput,
   GroupIdInput,
   GroupJoinInput,
+  GroupMembershipApprovalInput,
   GroupParticipantsInput,
   GroupPictureInput,
   GroupsListInput,
@@ -363,6 +364,108 @@ export class GroupTools extends McpController {
     });
   }
 
+  @Tool('groups-get-membership-approval', {
+    title: 'Get membership approval setting',
+    description:
+      'Get whether admin approval is required for users requesting to join the group',
+    inputSchema: GroupIdInput,
+    annotations: {
+      readOnlyHint: true,
+      destructiveHint: false,
+      idempotentHint: true,
+    },
+  })
+  async getMembershipApproval({ session, id }: z.infer<typeof GroupIdInput>) {
+    return this.textRequest({
+      method: 'GET',
+      url: `/api/${session}/groups/${id}/settings/security/membership-approval`,
+    });
+  }
+
+  @Tool('groups-set-membership-approval', {
+    title: 'Set membership approval setting',
+    description:
+      'Enable or disable admin approval for users requesting to join the group',
+    inputSchema: GroupMembershipApprovalInput,
+    annotations: {
+      readOnlyHint: false,
+      destructiveHint: false,
+      idempotentHint: true,
+    },
+  })
+  async setMembershipApproval({
+    session,
+    id,
+    ...body
+  }: z.infer<typeof GroupMembershipApprovalInput>) {
+    return this.textRequest({
+      method: 'PUT',
+      url: `/api/${session}/groups/${id}/settings/security/membership-approval`,
+      data: body,
+    });
+  }
+
+  @Tool('groups-get-join-requests', {
+    title: 'Get pending requests to join the group',
+    description: 'Get pending requests to join the group',
+    inputSchema: GroupIdInput,
+    annotations: {
+      readOnlyHint: true,
+      destructiveHint: false,
+      idempotentHint: true,
+    },
+  })
+  async getJoinRequests({ session, id }: z.infer<typeof GroupIdInput>) {
+    return this.textRequest({
+      method: 'GET',
+      url: `/api/${session}/groups/${id}/participants/join-requests`,
+    });
+  }
+
+  @Tool('groups-approve-join-requests', {
+    title: 'Approve pending requests to join the group',
+    description: 'Approve pending requests to join the group',
+    inputSchema: GroupParticipantsInput,
+    annotations: {
+      readOnlyHint: false,
+      destructiveHint: false,
+      idempotentHint: false,
+    },
+  })
+  async approveJoinRequests({
+    session,
+    id,
+    ...body
+  }: z.infer<typeof GroupParticipantsInput>) {
+    return this.textRequest({
+      method: 'POST',
+      url: `/api/${session}/groups/${id}/participants/join-requests/approve`,
+      data: body,
+    });
+  }
+
+  @Tool('groups-reject-join-requests', {
+    title: 'Reject pending requests to join the group',
+    description: 'Reject pending requests to join the group',
+    inputSchema: GroupParticipantsInput,
+    annotations: {
+      readOnlyHint: false,
+      destructiveHint: false,
+      idempotentHint: false,
+    },
+  })
+  async rejectJoinRequests({
+    session,
+    id,
+    ...body
+  }: z.infer<typeof GroupParticipantsInput>) {
+    return this.textRequest({
+      method: 'POST',
+      url: `/api/${session}/groups/${id}/participants/join-requests/reject`,
+      data: body,
+    });
+  }
+
   @Tool('groups-get-invite-code', {
     title: 'Get group invite code',
     description: 'Get the invite code for a group',

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

@@ -7,6 +7,7 @@ import {
   GroupsPaginationParams,
   JoinGroupRequest,
   ParticipantsRequest,
+  SettingsMembershipApproval,
   SettingsSecurityChangeInfo,
   SubjectRequest,
 } from '@waha/structures/groups.dto';
@@ -64,3 +65,10 @@ export const GroupParticipantsInput = DtoToZod(ParticipantsRequest).extend({
   session: SessionField,
   id: GroupIdField,
 });
+
+export const GroupMembershipApprovalInput = DtoToZod(
+  SettingsMembershipApproval,
+).extend({
+  session: SessionField,
+  id: GroupIdField,
+});

src/apps/mcp/tools/send.tools.ts

@@ -17,6 +17,7 @@ import {
   SendPollInput,
   SendPollVoteInput,
   SendSeenInput,
+  SendStickerInput,
   SendTextInput,
   SendVideoInput,
   SendVoiceInput,
@@ -126,6 +127,26 @@ export class SendTools extends McpController {
     });
   }
 
+  @Tool('send-sticker', {
+    title: 'Send a sticker',
+    description:
+      'Send a sticker to a chat. The file must already be in WebP format. ' +
+      FileNote,
+    inputSchema: SendStickerInput,
+    annotations: {
+      readOnlyHint: false,
+      destructiveHint: false,
+      idempotentHint: false,
+    },
+  })
+  async sendSticker(data: z.infer<typeof SendStickerInput>) {
+    return this.textRequest({
+      method: 'POST',
+      url: '/api/sendSticker',
+      data: data,
+    });
+  }
+
   @Tool('send-link-custom-preview', {
     title: 'Send a text message with a custom link preview',
     description:

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

@@ -13,6 +13,7 @@ import {
   MessagePollVoteRequest,
   MessageReactionRequest,
   MessageStarRequest,
+  MessageStickerRequest,
   MessageTextRequest,
   MessageVideoRequest,
   MessageVoiceRequest,
@@ -27,6 +28,7 @@ export const SendImageInput = DtoToZod(MessageImageRequest);
 export const SendFileInput = DtoToZod(MessageFileRequest);
 export const SendVoiceInput = DtoToZod(MessageVoiceRequest);
 export const SendVideoInput = DtoToZod(MessageVideoRequest);
+export const SendStickerInput = DtoToZod(MessageStickerRequest);
 export const SendLinkCustomPreviewInput = DtoToZod(
   MessageLinkCustomPreviewRequest,
 );

src/apps/mcp/tools/sessions.tools.ts

@@ -5,6 +5,7 @@ import { Tool } from '@waha/apps/mcp/decorators/tool';
 import {
   SessionCreateInput,
   SessionListInput,
+  SessionLogoutInput,
   SessionNameInput,
   SessionUpdateInput,
 } from '@waha/apps/mcp/tools/sessions.zod';
@@ -140,18 +141,20 @@ export class SessionTools extends McpController {
 
   @Tool('sessions-logout', {
     title: 'Logout session',
-    description: 'Logout from a WhatsApp session',
-    inputSchema: SessionNameInput,
+    description:
+      'Logout from a WhatsApp session. Optionally purge app storage via apps.purge.',
+    inputSchema: SessionLogoutInput,
     annotations: {
       readOnlyHint: false,
       destructiveHint: true,
       idempotentHint: false,
     },
   })
-  async logout({ session }: z.infer<typeof SessionNameInput>) {
+  async logout({ session, ...body }: z.infer<typeof SessionLogoutInput>) {
     return this.textRequest({
       method: 'POST',
       url: `/api/sessions/${session}/logout`,
+      data: body,
     });
   }
 
@@ -171,4 +174,41 @@ export class SessionTools extends McpController {
       url: `/api/sessions/${session}/restart`,
     });
   }
+
+  @Tool('sessions-capping', {
+    title: 'Get message capping',
+    description:
+      'Fetch the account new-chat message capping (per-cycle quota).',
+    inputSchema: SessionNameInput,
+    annotations: {
+      readOnlyHint: true,
+      destructiveHint: false,
+      idempotentHint: true,
+    },
+  })
+  async capping({ session }: z.infer<typeof SessionNameInput>) {
+    return this.textRequest({
+      method: 'GET',
+      url: `/api/sessions/${session}/capping`,
+    });
+  }
+
+  @Tool('sessions-timelock', {
+    title: 'Get reachout timelock',
+    description:
+      'Fetch the account reachout timelock state ' +
+      '(the restriction behind error 463 when messaging new contacts).',
+    inputSchema: SessionNameInput,
+    annotations: {
+      readOnlyHint: true,
+      destructiveHint: false,
+      idempotentHint: true,
+    },
+  })
+  async timelock({ session }: z.infer<typeof SessionNameInput>) {
+    return this.textRequest({
+      method: 'GET',
+      url: `/api/sessions/${session}/timelock`,
+    });
+  }
 }

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

@@ -4,6 +4,7 @@ import { DtoToZod } from '@waha/apps/mcp/schemas/DtoToZod';
 import {
   ListSessionsQuery,
   SessionCreateRequest,
+  SessionLogoutRequest,
   SessionUpdateRequest,
 } from '@waha/structures/sessions.dto';
 
@@ -18,3 +19,7 @@ export const SessionCreateInput = DtoToZod(SessionCreateRequest);
 export const SessionUpdateInput = DtoToZod(SessionUpdateRequest).extend({
   session: z.string().describe('Session name'),
 });
+
+export const SessionLogoutInput = DtoToZod(SessionLogoutRequest).extend({
+  session: z.string().describe('Session name'),
+});

src/config.service.ts

@@ -1,20 +1,18 @@
-import { Injectable, Logger, OnApplicationBootstrap } from '@nestjs/common';
+import { Injectable, Logger } from '@nestjs/common';
 import { ConfigService } from '@nestjs/config';
-import { GlobalWebhookConfigConfig } from '@waha/core/config/GlobalWebhookConfig';
+import { MediaDownloadOptions } from '@waha/core/media/IMediaManager';
 import { IgnoreJidConfig } from '@waha/core/utils/jids';
+import * as lodash from 'lodash';
 
 import { parseBool } from './helpers';
-import { WebhookConfig } from './structures/webhooks.config.dto';
 import { Auth } from '@waha/core/auth/config';
 
 @Injectable()
-export class WhatsappConfigService implements OnApplicationBootstrap {
+export class WhatsappConfigService {
   private logger: Logger;
-  private webhookConfig: GlobalWebhookConfigConfig;
 
   constructor(private configService: ConfigService) {
     this.logger = new Logger('WhatsappConfigService');
-    this.webhookConfig = new GlobalWebhookConfigConfig(configService);
   }
 
   get schema() {
@@ -63,17 +61,50 @@ export class WhatsappConfigService implements OnApplicationBootstrap {
     }
   }
 
-  get mimetypes(): string[] {
-    if (!this.shouldDownloadMedia) {
-      return ['mimetype/ignore-all-media'];
-    }
-    const types = this.configService.get('WHATSAPP_FILES_MIMETYPES', '');
-    return types ? types.split(',') : [];
+  private get mediaGlobalParams() {
+    return {
+      download: this.configService.get('WHATSAPP_DOWNLOAD_MEDIA', 'true'),
+      mimetypes: this.configService.get('WHATSAPP_FILES_MIMETYPES', ''),
+    };
   }
 
-  get shouldDownloadMedia(): boolean {
-    const value = this.configService.get('WHATSAPP_DOWNLOAD_MEDIA', 'true');
-    return parseBool(value);
+  private get mediaApiConfig(): MediaDownloadOptions {
+    const params = {
+      download: this.configService.get('WAHA_API_DOWNLOAD_MEDIA'),
+      mimetypes: this.configService.get('WAHA_API_DOWNLOAD_MEDIA_MIMETYPES'),
+    };
+    const config = lodash.defaults({}, params, this.mediaGlobalParams);
+    return this.parseMediaDownloadOptions(config);
+  }
+
+  private get mediaEventsConfig(): MediaDownloadOptions {
+    const params = {
+      download: this.configService.get('WAHA_EVENTS_DOWNLOAD_MEDIA'),
+      mimetypes: this.configService.get('WAHA_EVENTS_DOWNLOAD_MEDIA_MIMETYPES'),
+    };
+    const config = lodash.defaults({}, params, this.mediaGlobalParams);
+    return this.parseMediaDownloadOptions(config);
+  }
+
+  private parseMediaDownloadOptions(config: {
+    download: string;
+    mimetypes: string;
+  }): MediaDownloadOptions {
+    const types = config.mimetypes;
+    const mimetypes = types
+      ? types.split(',').map((type: string) => type.trim())
+      : [];
+    return {
+      download: parseBool(config.download),
+      mimetypes: mimetypes,
+    };
+  }
+
+  get mediaConfig() {
+    return {
+      api: this.mediaApiConfig,
+      events: this.mediaEventsConfig,
+    };
   }
 
   get startSessions(): string[] {
@@ -120,10 +151,6 @@ export class WhatsappConfigService implements OnApplicationBootstrap {
     return this.configService.get('WHATSAPP_PROXY_SERVER_PASSWORD', undefined);
   }
 
-  getWebhookConfig(): WebhookConfig | undefined {
-    return this.webhookConfig.config;
-  }
-
   getSessionMongoUrl(): string | undefined {
     return this.configService.get('WHATSAPP_SESSIONS_MONGO_URL', undefined);
   }
@@ -201,11 +228,4 @@ export class WhatsappConfigService implements OnApplicationBootstrap {
     );
     return { status, groups, channels, broadcast };
   }
-
-  onApplicationBootstrap() {
-    const error = this.webhookConfig.validateConfig();
-    if (error) {
-      throw new Error(`Invalid global webhook config:\n${error}\n`);
-    }
-  }
 }

src/core/abc/MessageCappingTracker.ts

@@ -0,0 +1,39 @@
+import { MessageCappingData } from '@waha/structures/sessions.dto';
+import * as lodash from 'lodash';
+import { Logger } from 'pino';
+import { Observable, Subject } from 'rxjs';
+
+/**
+ * WhatsApp new-chat message capping (per-cycle quota).
+ * The volume counterpart of the reachout timelock: it caps how many new chats
+ * the account may start per cycle. Keeps the latest known state and emits
+ * changes. Unlike the timelock there is no client-side expiry - the cycle
+ * resets on the server and the state is refreshed by re-fetching.
+ */
+export class MessageCappingTracker {
+  private capping: MessageCappingData | null = null;
+  private changes: Subject<MessageCappingData | null> = new Subject();
+
+  constructor(private logger: Logger) {}
+
+  get value(): MessageCappingData | null {
+    return this.capping;
+  }
+
+  get changes$(): Observable<MessageCappingData | null> {
+    return this.changes;
+  }
+
+  update(capping: MessageCappingData | null) {
+    if (lodash.isEqual(this.capping, capping)) {
+      return;
+    }
+    this.apply(capping);
+  }
+
+  private apply(capping: MessageCappingData | null) {
+    this.capping = capping;
+    this.logger.info({ messageCapping: capping }, 'Message capping updated');
+    this.changes.next(capping);
+  }
+}

src/core/abc/ReachoutTimelockTracker.ts

@@ -0,0 +1,68 @@
+import { ReachoutTimelockData } from '@waha/structures/sessions.dto';
+import { LongTimeout, setLongTimeout } from '@waha/utils/promiseTimeout';
+import { EnsureMilliseconds } from '@waha/utils/timehelper';
+import * as lodash from 'lodash';
+import { Logger } from 'pino';
+import { Observable, Subject } from 'rxjs';
+
+/**
+ * WhatsApp "reachout timelock"
+ * The account is restricted from messaging new contacts for a period of time (the cause of 463 errors on send).
+ * Keeps the latest known state, expires it when the enforcement ends and emits changes.
+ */
+export class ReachoutTimelockTracker {
+  private timelock: ReachoutTimelockData | null = null;
+  private timeout?: LongTimeout;
+  private changes: Subject<ReachoutTimelockData | null> = new Subject();
+
+  constructor(private logger: Logger) {}
+
+  get value(): ReachoutTimelockData | null {
+    return this.timelock;
+  }
+
+  get changes$(): Observable<ReachoutTimelockData | null> {
+    return this.changes;
+  }
+
+  update(timelock: ReachoutTimelockData | null) {
+    if (timelock && !timelock.isActive && !this.timelock) {
+      // No enforcement has been seen for the account - keep it null instead of storing an inactive record
+      // (startup fetch on a clean account lands here)
+      return;
+    }
+    if (lodash.isEqual(this.timelock, timelock)) {
+      return;
+    }
+    this.timeout?.clear();
+    if (timelock?.isActive && timelock.timeEnforcementEnds) {
+      const endsAtMs = EnsureMilliseconds(timelock.timeEnforcementEnds);
+      const delay = Math.max(endsAtMs - Date.now(), 0);
+      this.timeout = setLongTimeout(() => this.expire(), delay).unref();
+    }
+    this.apply(timelock);
+  }
+
+  /**
+   * Stop the expiry timer, keeping the last known state.
+   */
+  stop() {
+    this.timeout?.clear();
+  }
+
+  private expire() {
+    if (!this.timelock?.isActive) {
+      return;
+    }
+    this.apply({ ...this.timelock, isActive: false });
+  }
+
+  private apply(timelock: ReachoutTimelockData | null) {
+    this.timelock = timelock;
+    this.logger.info(
+      { reachoutTimelock: timelock },
+      'Reachout timelock updated',
+    );
+    this.changes.next(timelock);
+  }
+}

src/core/abc/capping.ts

@@ -0,0 +1,33 @@
+import {
+  MessageCappingData,
+  MessageCappingStatus,
+} from '@waha/structures/sessions.dto';
+import { EnsureSeconds } from '@waha/utils/timehelper';
+
+function parseCappingTimestamp(value: any): number | null {
+  if (!value) {
+    return null;
+  }
+  const parsed = parseInt(value, 10);
+  return Number.isNaN(parsed) ? null : EnsureSeconds(parsed);
+}
+
+/**
+ * Normalize the message capping payload (xwa2_message_capping_info) - the shape is the same
+ * across engines: GOWS gRPC event, NOWEB Baileys fetch/push, WEBJS injected fetch/local read.
+ */
+export function parseMessageCapping(data: any): MessageCappingData {
+  const cappingStatus = (data?.capping_status ??
+    MessageCappingStatus.NONE) as MessageCappingStatus;
+  return {
+    cappingStatus: cappingStatus,
+    // -1 total means "no cap"
+    totalQuota: typeof data?.total_quota === 'number' ? data.total_quota : -1,
+    usedQuota: typeof data?.used_quota === 'number' ? data.used_quota : 0,
+    // cycle timestamps are unix seconds strings (or ms numbers from WEBJS local reads)
+    cycleStart: parseCappingTimestamp(data?.cycle_start_timestamp),
+    cycleEnd: parseCappingTimestamp(data?.cycle_end_timestamp),
+    mvStatus: data?.mv_status ?? null,
+    oteStatus: data?.ote_status ?? null,
+  };
+}

src/core/abc/session.abc.test.ts

@@ -0,0 +1,163 @@
+import { WhatsappSession } from '@waha/core/abc/session.abc';
+import { WAHAEvents, WAHASessionStatus } from '@waha/structures/enums.dto';
+import {
+  MeInfo,
+  ReachoutTimelockData,
+  ReachoutTimelockEnforcementType,
+} from '@waha/structures/sessions.dto';
+import { WASessionStatusBody } from '@waha/structures/webhooks.dto';
+
+const logger: any = {
+  info: jest.fn(),
+  warn: jest.fn(),
+  error: jest.fn(),
+  debug: jest.fn(),
+};
+logger.child = () => logger;
+
+const BaseSession = WhatsappSession as unknown as new (params: any) => any;
+
+class TestSession extends BaseSession {
+  public getSessionMeInfo(): MeInfo | null {
+    // pushName and id must be set so the SESSION_STATUS pipeline does not delay WORKING statuses
+    return { id: '123@c.us', pushName: 'Test' };
+  }
+
+  public setStatusPublic(status: WAHASessionStatus) {
+    this.setStatus(status);
+  }
+
+  public updateReachoutTimelockPublic(timelock: ReachoutTimelockData | null) {
+    this.reachoutTimelock.update(timelock);
+  }
+}
+
+function buildSession(): TestSession {
+  return new TestSession({
+    name: 'test',
+    printQR: false,
+    loggerBuilder: { child: () => logger },
+    sessionStore: null,
+    mediaManager: null,
+    sessionConfig: null,
+    engineConfig: null,
+    ignore: {},
+  });
+}
+
+const ACTIVE_TIMELOCK: ReachoutTimelockData = {
+  enforcementType: ReachoutTimelockEnforcementType.RESTRICT_ALL_COMPANIONS,
+  isActive: true,
+  timeEnforcementEnds: Math.floor(Date.now() / 1000) + 3600,
+};
+
+describe('WhatsappSession reachout timelock', () => {
+  let session: TestSession;
+  let statuses: WASessionStatusBody[];
+
+  beforeEach(() => {
+    session = buildSession();
+    statuses = [];
+    session
+      .getEventObservable(WAHAEvents.SESSION_STATUS)
+      .subscribe((body: WASessionStatusBody) => statuses.push(body));
+  });
+
+  it('re-issues WORKING with data when a timelock arrives', () => {
+    session.setStatusPublic(WAHASessionStatus.WORKING);
+    session.updateReachoutTimelockPublic(ACTIVE_TIMELOCK);
+
+    expect(statuses).toHaveLength(2);
+    expect(statuses[1].status).toEqual(WAHASessionStatus.WORKING);
+    expect(statuses[1].data).toEqual({ reachoutTimelock: ACTIVE_TIMELOCK });
+  });
+
+  it('keeps attaching the timelock on plain WORKING assignments', () => {
+    session.setStatusPublic(WAHASessionStatus.WORKING);
+    session.updateReachoutTimelockPublic(ACTIVE_TIMELOCK);
+    // Reconnect flows assign 'status = WORKING' with no data
+    session.setStatusPublic(WAHASessionStatus.STARTING);
+    session.setStatusPublic(WAHASessionStatus.WORKING);
+
+    const last = statuses.at(-1);
+    expect(last.status).toEqual(WAHASessionStatus.WORKING);
+    expect(last.data).toEqual({ reachoutTimelock: ACTIVE_TIMELOCK });
+  });
+
+  it('collapses consecutive WORKING statuses with the same data', () => {
+    session.setStatusPublic(WAHASessionStatus.WORKING);
+    session.updateReachoutTimelockPublic(ACTIVE_TIMELOCK);
+    session.setStatusPublic(WAHASessionStatus.WORKING);
+    session.setStatusPublic(WAHASessionStatus.WORKING);
+
+    expect(statuses).toHaveLength(2);
+  });
+
+  it('ignores duplicate timelock updates', () => {
+    session.setStatusPublic(WAHASessionStatus.WORKING);
+    session.updateReachoutTimelockPublic(ACTIVE_TIMELOCK);
+    session.updateReachoutTimelockPublic({ ...ACTIVE_TIMELOCK });
+
+    expect(statuses).toHaveLength(2);
+  });
+
+  it('ignores an inactive timelock when none has been seen', () => {
+    session.setStatusPublic(WAHASessionStatus.WORKING);
+    session.updateReachoutTimelockPublic({
+      enforcementType: ReachoutTimelockEnforcementType.DEFAULT,
+      isActive: false,
+      timeEnforcementEnds: null,
+    });
+
+    expect(statuses).toHaveLength(1);
+    expect(statuses[0].data).toBeNull();
+  });
+
+  it('re-issues WORKING when the timelock is lifted by an event', () => {
+    session.setStatusPublic(WAHASessionStatus.WORKING);
+    session.updateReachoutTimelockPublic(ACTIVE_TIMELOCK);
+    const lifted = { ...ACTIVE_TIMELOCK, isActive: false };
+    session.updateReachoutTimelockPublic(lifted);
+
+    expect(statuses).toHaveLength(3);
+    expect(statuses[2].data).toEqual({ reachoutTimelock: lifted });
+  });
+
+  it('marks the timelock inactive when the enforcement expires', () => {
+    jest.useFakeTimers();
+    try {
+      const endsAt = Math.floor(Date.now() / 1000) + 600;
+      session.setStatusPublic(WAHASessionStatus.WORKING);
+      session.updateReachoutTimelockPublic({
+        ...ACTIVE_TIMELOCK,
+        timeEnforcementEnds: endsAt,
+      });
+
+      jest.advanceTimersByTime(601 * 1000);
+
+      const last = statuses.at(-1);
+      expect(last.data.reachoutTimelock.isActive).toBe(false);
+    } finally {
+      jest.useRealTimers();
+    }
+  });
+
+  it('does not fire the expiry timer after the session stops', () => {
+    jest.useFakeTimers();
+    try {
+      session.setStatusPublic(WAHASessionStatus.WORKING);
+      session.updateReachoutTimelockPublic({
+        ...ACTIVE_TIMELOCK,
+        timeEnforcementEnds: Math.floor(Date.now() / 1000) + 600,
+      });
+      session.setStatusPublic(WAHASessionStatus.STOPPED);
+      const count = statuses.length;
+
+      jest.advanceTimersByTime(601 * 1000);
+
+      expect(statuses).toHaveLength(count);
+    } finally {
+      jest.useRealTimers();
+    }
+  });
+});

src/core/abc/session.abc.ts

@@ -1,5 +1,8 @@
+import { MessageCappingTracker } from '@waha/core/abc/MessageCappingTracker';
+import { ReachoutTimelockTracker } from '@waha/core/abc/ReachoutTimelockTracker';
 import { getBrowserExecutablePath as getBrowserExecutablePathAutodetect } from '@waha/core/abc/session.browser';
-import { IMediaConverter } from '@waha/core/media/IConverter';
+import { PluginRegistry } from '@waha/core/abc/session.plugin.registry';
+import { IMediaConverter } from '@waha/core/media/IMediaConverter';
 import { Ffmpeg } from '@waha/core/utils/ffmpeg';
 import { MessagesForRead } from '@waha/core/utils/convertors';
 import {
@@ -35,7 +38,7 @@ import { BinaryFile, RemoteFile } from '@waha/structures/files.dto';
 import { Label, LabelDTO, LabelID } from '@waha/structures/labels.dto';
 import { LidToPhoneNumber } from '@waha/structures/lids.dto';
 import { PaginationParams } from '@waha/structures/pagination.dto';
-import { MessageSource, WAMessage } from '@waha/structures/responses.dto';
+import { WAMessage } from '@waha/structures/responses.dto';
 import { BrowserTraceQuery } from '@waha/structures/server.debug.dto';
 import { DefaultMap } from '@waha/utils/DefaultMap';
 import { generatePrefixedId } from '@waha/utils/ids';
@@ -84,6 +87,7 @@ import {
   MessageReactionRequest,
   MessageReplyRequest,
   MessageStarRequest,
+  MessageStickerRequest,
   MessageTextRequest,
   MessageVideoRequest,
   MessageVoiceRequest,
@@ -104,16 +108,24 @@ import { EventMessageRequest } from '../../structures/events.dto';
 import {
   CreateGroupRequest,
   GroupField,
+  GroupJoinRequest,
+  GroupJoinRequestResult,
   GroupParticipant,
   GroupsListFields,
   ParticipantsRequest,
+  SettingsMemberAddMode,
+  SettingsMembershipApproval,
   SettingsSecurityChangeInfo,
 } from '../../structures/groups.dto';
 import { WAHAChatPresences } from '../../structures/presence.dto';
 import {
   MeInfo,
+  MessageCappingData,
+  MessageCappingStatus,
   ProxyConfig,
+  ReachoutTimelockData,
   SessionConfig,
+  SessionInfo,
 } from '../../structures/sessions.dto';
 import {
   DeleteStatusRequest,
@@ -130,15 +142,11 @@ import {
   AvailableInPlusVersion,
   NotImplementedByEngineError,
 } from '../exceptions';
-import { IMediaManager } from '../media/IMediaManager';
+import { IMediaManager, MediaDownloadOptions } from '../media/IMediaManager';
 import { QR } from '../QR';
 import { DataStore } from './DataStore';
 import { fetchBuffer } from '@waha/utils/fetch';
-import {
-  PRESENCE_AUTO_ONLINE,
-  PRESENCE_AUTO_ONLINE_DURATION_SECONDS,
-} from '@waha/core/env';
-import { Activity } from '@waha/core/abc/activity';
+import { SessionHooks } from './session.hooks';
 
 // eslint-disable-next-line @typescript-eslint/no-var-requires
 const qrcode = require('qrcode-terminal');
@@ -153,6 +161,11 @@ export function ensureSuffix(phone) {
   return phone + suffix;
 }
 
+interface MediaConfig {
+  api: MediaDownloadOptions;
+  events: MediaDownloadOptions;
+}
+
 export interface SessionParams {
   name: string;
   printQR: boolean;
@@ -165,6 +178,8 @@ export interface SessionParams {
   engineConfig?: any;
   // Ignore settings
   ignore: IgnoreJidConfig;
+  // Media config
+  media: MediaConfig;
 }
 
 /**
@@ -190,21 +205,19 @@ export abstract class WhatsappSession {
   protected sessionStore: DataStore;
   protected proxyConfig?: ProxyConfig;
   public sessionConfig?: SessionConfig;
+  protected media: MediaConfig;
   protected engineConfig?: any;
   protected unpairing: boolean = false;
   protected jids: JidFilter;
 
   private _status: WAHASessionStatus;
   private _statusData: any = null;
+  protected reachoutTimelock: ReachoutTimelockTracker;
+  protected messageCapping: MessageCappingTracker;
   private _presence:
     | WAHAPresenceStatus.ONLINE
     | WAHAPresenceStatus.OFFLINE
     | null = null;
-  private lastActivityTimestamp?: number;
-  protected presenceAutoOnlineConfig = {
-    enabled: PRESENCE_AUTO_ONLINE,
-    duration: PRESENCE_AUTO_ONLINE_DURATION_SECONDS * 1000,
-  };
 
   private shouldPrintQR: boolean;
   protected events2: DefaultMap<WAHAEvents, SwitchObservable<any>>;
@@ -213,15 +226,9 @@ export abstract class WhatsappSession {
     stdTTL: 24 * 60 * 60, // 1 day
   });
 
-  // Save sent messages ids in cache so we can determine if a message was sent
-  // via API or APP
-  private sentMessageIds: NodeCache = new NodeCache({
-    stdTTL: 10 * 60, // 10 minutes
-  });
-
-  private presenceOfflineTimeout?: ReturnType<typeof setTimeout>;
-
   public mediaConverter: IMediaConverter;
+  public hooks: SessionHooks;
+  public plugins: PluginRegistry;
 
   public constructor({
     name,
@@ -233,15 +240,36 @@ export abstract class WhatsappSession {
     sessionConfig,
     engineConfig,
     ignore,
+    media,
   }: SessionParams) {
     this._status = WAHASessionStatus.STOPPED;
     this.status$ = new Subject<SessionStatusUpdate>();
-
     this.name = name;
     this.proxyConfig = proxyConfig;
     this.loggerBuilder = loggerBuilder;
     this.logger = loggerBuilder.child({ name: 'WhatsappSession' });
+    this.hooks = new SessionHooks();
+    this.plugins = new PluginRegistry(this);
+
     this.mediaConverter = new Ffmpeg(this.name, this.logger);
+    this.reachoutTimelock = new ReachoutTimelockTracker(this.logger);
+    this.reachoutTimelock.changes$.subscribe((timelock) => {
+      if (this.status === WAHASessionStatus.WORKING) {
+        // Re-issue WORKING so 'session.status' consumers get the update
+        this.setStatus(WAHASessionStatus.WORKING, {
+          reachoutTimelock: timelock,
+        });
+      }
+    });
+    this.messageCapping = new MessageCappingTracker(this.logger);
+    this.messageCapping.changes$.subscribe((capping) => {
+      if (this.status === WAHASessionStatus.WORKING) {
+        // Re-issue WORKING so 'session.status' consumers get the update
+        this.setStatus(WAHASessionStatus.WORKING, {
+          messageCapping: capping,
+        });
+      }
+    });
     this.events2 = new DefaultMap<WAHAEvents, SwitchObservable<any>>(
       (key) =>
         new SwitchObservable((obs$) => {
@@ -280,11 +308,12 @@ export abstract class WhatsappSession {
             }
             return of(update);
           }),
-          // Remove consecutive duplicate WORKING statuses
+          // Remove consecutive duplicate WORKING statuses, but let through WORKING re-issued with new data
           distinctUntilChanged(
             (prev, curr) =>
               prev.status === curr.status &&
-              curr.status === WAHASessionStatus.WORKING,
+              curr.status === WAHASessionStatus.WORKING &&
+              lodash.isEqual(prev.data, curr.data),
           ),
           // attach current time (ms)
           timestamp(),
@@ -332,6 +361,17 @@ export abstract class WhatsappSession {
       'The session ignores the following chat ids',
     );
     this.jids = new JidFilter(ignore);
+
+    //
+    // Media options
+    //
+    this.media = media;
+    const mimetypes = this.media.events.mimetypes;
+    if (mimetypes && mimetypes.length > 0) {
+      const str = mimetypes.join(',');
+      const msg = `Only '${str}' mimetypes will be downloaded for the session`;
+      this.logger.info(msg);
+    }
   }
 
   public getEventObservable(event: WAHAEvents) {
@@ -349,6 +389,27 @@ export abstract class WhatsappSession {
       // wait for STOPPED event, ignore the rest
       return;
     }
+    if (status === WAHASessionStatus.WORKING && data == null) {
+      // Plain 'status = WORKING' assignments (reconnects) must keep carrying the
+      // active account-restriction info so 'session.status' consumers do not lose it
+      const carry: any = {};
+      if (this.reachoutTimelock.value?.isActive) {
+        carry.reachoutTimelock = this.reachoutTimelock.value;
+      }
+      const capping = this.messageCapping.value;
+      if (capping && capping.cappingStatus !== MessageCappingStatus.NONE) {
+        carry.messageCapping = capping;
+      }
+      if (Object.keys(carry).length > 0) {
+        data = carry;
+      }
+    }
+    if (
+      status === WAHASessionStatus.STOPPED ||
+      status === WAHASessionStatus.FAILED
+    ) {
+      this.reachoutTimelock?.stop();
+    }
     this._status = status;
     this._statusData = data;
     this.status$.next({ status: status, data: data });
@@ -366,7 +427,7 @@ export abstract class WhatsappSession {
     return this._statusData;
   }
 
-  protected set presence(value: WAHAPresenceStatus) {
+  public set presence(value: WAHAPresenceStatus) {
     switch (value) {
       case null:
         this._presence = null;
@@ -479,6 +540,14 @@ export abstract class WhatsappSession {
     throw new NotImplementedByEngineError();
   }
 
+  public fetchMessageCapping(): Promise<MessageCappingData> {
+    throw new NotImplementedByEngineError();
+  }
+
+  public fetchReachoutTimelock(): Promise<ReachoutTimelockData> {
+    throw new NotImplementedByEngineError();
+  }
+
   /**
    * Auth methods
    */
@@ -513,6 +582,14 @@ export abstract class WhatsappSession {
     return null;
   }
 
+  /**
+   * Builds the runtime session info via the "session.info" hook.
+   */
+  public getSessionInfo(): Promise<SessionInfo> {
+    const info = {} as SessionInfo;
+    return this.hooks.session.info.promise(info);
+  }
+
   /**
    * Profile methods
    */
@@ -609,6 +686,10 @@ export abstract class WhatsappSession {
     throw new NotImplementedByEngineError();
   }
 
+  sendSticker(request: MessageStickerRequest) {
+    throw new NotImplementedByEngineError();
+  }
+
   sendButtons(request: SendButtonsRequest) {
     throw new NotImplementedByEngineError();
   }
@@ -629,75 +710,6 @@ export abstract class WhatsappSession {
 
   abstract stopTyping(chat: ChatRequest);
 
-  /**
-   * Activity tracking and presence management
-   */
-
-  /**
-   * Returns the timestamp of the last "activity" in the session
-   * @returns Timestamp in milliseconds or undefined if there was never any activity
-   */
-  public getLastActivityTimestamp(): number | undefined {
-    return this.lastActivityTimestamp;
-  }
-
-  /**
-   * Maintains ONLINE presence active while there is activity
-   * Resets the timer on each activity, only goes OFFLINE after Xs without activity
-   */
-  async maintainPresenceOnline(): Promise<void> {
-    if (!this.presenceAutoOnlineConfig.enabled) {
-      return;
-    }
-    if (this.status !== WAHASessionStatus.WORKING) {
-      return;
-    }
-    this.lastActivityTimestamp = Date.now();
-    // If not ONLINE yet, send ONLINE
-    if (this._presence !== WAHAPresenceStatus.ONLINE) {
-      try {
-        // Force set ONLINE in case of many requests comes at the same time
-        // So we'll set ONLINE exactly once
-        this.presence = WAHAPresenceStatus.ONLINE;
-        await this.setPresence(WAHAPresenceStatus.ONLINE);
-        this.logger.debug('Set presence to ONLINE due to activity');
-      } catch (error) {
-        this.logger.debug('Failed to set presence ONLINE', error);
-        return;
-      }
-    }
-    // Cancel the previous timeout (if exists)
-    this.cleanupPresenceTimeout();
-
-    // Schedule to go back OFFLINE after timeout without activity
-    this.presenceOfflineTimeout = setTimeout(async () => {
-      try {
-        const working = this.status === WAHASessionStatus.WORKING;
-        const online = this.presence === WAHAPresenceStatus.ONLINE;
-        if (!working || !online) {
-          // Nothing to do
-          return;
-        }
-        await this.setPresence(WAHAPresenceStatus.OFFLINE);
-        this.logger.debug(
-          'Auto-set presence to OFFLINE after time without activity',
-        );
-      } catch (error) {
-        this.presence = WAHAPresenceStatus.OFFLINE;
-        this.logger.debug('Failed to set presence OFFLINE', error);
-      }
-      this.cleanupPresenceTimeout();
-    }, this.presenceAutoOnlineConfig.duration);
-  }
-
-  /**
-   * Cleans up the timeout when the session stops
-   */
-  protected cleanupPresenceTimeout() {
-    clearTimeout(this.presenceOfflineTimeout);
-    this.presenceOfflineTimeout = null;
-  }
-
   abstract setReaction(request: MessageReactionRequest);
 
   setStar(request: MessageStarRequest): Promise<void> {
@@ -1005,6 +1017,45 @@ export abstract class WhatsappSession {
     throw new NotImplementedByEngineError();
   }
 
+  public getMemberAddMode(id): Promise<SettingsMemberAddMode> {
+    throw new NotImplementedByEngineError();
+  }
+
+  public setMemberAddMode(id, value) {
+    throw new NotImplementedByEngineError();
+  }
+
+  public getMembershipApprovalMode(
+    id: string,
+  ): Promise<SettingsMembershipApproval> {
+    throw new NotImplementedByEngineError();
+  }
+
+  public setMembershipApprovalMode(
+    id: string,
+    value: boolean,
+  ): Promise<boolean> {
+    throw new NotImplementedByEngineError();
+  }
+
+  public getGroupJoinRequests(id: string): Promise<GroupJoinRequest[]> {
+    throw new NotImplementedByEngineError();
+  }
+
+  public approveGroupJoinRequests(
+    id: string,
+    request: ParticipantsRequest,
+  ): Promise<GroupJoinRequestResult[]> {
+    throw new NotImplementedByEngineError();
+  }
+
+  public rejectGroupJoinRequests(
+    id: string,
+    request: ParticipantsRequest,
+  ): Promise<GroupJoinRequestResult[]> {
+    throw new NotImplementedByEngineError();
+  }
+
   public deleteGroup(id) {
     throw new NotImplementedByEngineError();
   }
@@ -1199,14 +1250,6 @@ export abstract class WhatsappSession {
    * END - Methods for API
    */
 
-  /**
-   * Add WhatsApp suffix (@c.us) to the phone number if it doesn't have it yet
-   * @param phone
-   */
-  protected ensureSuffix(phone) {
-    return ensureSuffix(phone);
-  }
-
   protected deserializeId(messageId: string): MessageId {
     const parts = messageId.split('_');
     return {
@@ -1233,18 +1276,6 @@ export abstract class WhatsappSession {
     qrcode.generate(qr.raw, { small: true });
   }
 
-  protected saveSentMessageId(id: string) {
-    this.sentMessageIds.set(id, true);
-  }
-
-  protected getMessageSource(id: string): MessageSource {
-    if (!id) {
-      return MessageSource.APP;
-    }
-    const api = this.sentMessageIds.has(id);
-    return api ? MessageSource.API : MessageSource.APP;
-  }
-
   /**
    * Fetches the content from the specified URL and returns it as a Buffer.
    */

src/core/abc/session.hooks.activity.ts

@@ -1,8 +1,7 @@
 import type { WhatsappSession } from '@waha/core/abc/session.abc';
 
 /**
- * Decorator to mark a method as an activity that
- * keeps the WhatsApp session online.
+ * Decorator to call "activity" hook
  * @constructor
  */
 export function Activity() {
@@ -16,7 +15,7 @@ export function Activity() {
       this: WhatsappSession,
       ...args: Parameters<T>
     ): Promise<ReturnType<T>> {
-      await this.maintainPresenceOnline();
+      await this.hooks.activity.promise(String(propertyKey));
       return await original.apply(this, args);
     } as T;
 

src/core/abc/session.hooks.ts

@@ -0,0 +1,64 @@
+import { MessageSource } from '@waha/structures/responses.dto';
+import { SessionInfo } from '@waha/structures/sessions.dto';
+import {
+  AsyncSeriesBailHook,
+  AsyncSeriesHook,
+  AsyncSeriesWaterfallHook,
+  SyncHook,
+} from 'tapable';
+
+/**
+ * Well-known stages for hook taps. Lower stage runs earlier, taps without a stage run in between (default stage is 0).
+ */
+export const Stage = {
+  FIRST: -100,
+  LAST: 100,
+};
+
+export class SessionHooks {
+  /**
+   * Called before an engine method that makes a network call to WhatsApp.
+   * method - the name of the method about to run.
+   */
+  readonly activity = new AsyncSeriesHook<[string]>(['method'], 'activity');
+
+  readonly session = Object.freeze({
+    /**
+     * Builds the runtime session info (waterfall) - starts with an empty object, each tap merges its part in.
+     * Called when the API reports session state, e.g. GET /api/sessions.
+     */
+    info: new AsyncSeriesWaterfallHook<[SessionInfo]>(['info'], 'session.info'),
+  });
+
+  /**
+   * Converts a WhatsApp identifier (wid) supplied by the API caller into the form the engine addresses.
+   * "wid.chat" converts the chat target, "wid.mention" converts a mention entry.
+   * method - the engine method the wid is being converted for, e.g. 'sendText'.
+   */
+  readonly wid = Object.freeze({
+    chat: new AsyncSeriesWaterfallHook<[string, string]>(
+      ['wid', 'method'],
+      'wid.chat',
+    ),
+    mention: new AsyncSeriesWaterfallHook<[string, string]>(
+      ['wid', 'method'],
+      'wid.mention',
+    ),
+  });
+
+  readonly message = Object.freeze({
+    /**
+     * Called with the message id when the session sends a message via API.
+     * Fire and forget - return values are ignored.
+     */
+    sent: new SyncHook<[string]>(['id'], 'message.sent'),
+    /**
+     * Resolves the MessageSource (api/app) for a message id. The first tap returning a non-undefined result wins,
+     * if all return undefined - callers fall back to MessageSource.APP.
+     */
+    source: new AsyncSeriesBailHook<[string], MessageSource | undefined>(
+      ['id'],
+      'message.source',
+    ),
+  });
+}

src/core/abc/session.plugin.events.ts

@@ -0,0 +1,62 @@
+import type { SessionPlugin } from '@waha/core/abc/session.plugin';
+import { WAHAEvents } from '@waha/structures/enums.dto';
+import { Observable } from 'rxjs';
+
+type EventFn = (events$: Observable<any>) => void;
+
+interface EventSubscriptionMetadata {
+  event: WAHAEvents;
+  propertyKey: string;
+}
+
+const EVENT_SUBSCRIPTIONS = Symbol('PluginEventSubscriptions');
+
+function getOwnEventSubscriptions(ctor: any): EventSubscriptionMetadata[] {
+  if (!Object.prototype.hasOwnProperty.call(ctor, EVENT_SUBSCRIPTIONS)) {
+    ctor[EVENT_SUBSCRIPTIONS] = [];
+  }
+  return ctor[EVENT_SUBSCRIPTIONS];
+}
+
+function collectEventSubscriptions(ctor: any): EventSubscriptionMetadata[] {
+  const subscriptions: EventSubscriptionMetadata[] = [];
+  let current = ctor;
+  while (current) {
+    if (Object.prototype.hasOwnProperty.call(current, EVENT_SUBSCRIPTIONS)) {
+      subscriptions.push(...current[EVENT_SUBSCRIPTIONS]);
+    }
+    current = Object.getPrototypeOf(current);
+  }
+  return subscriptions;
+}
+
+/**
+ * Passes the session event observable to the decorated (public) method once, the method subscribes itself:
+ *
+ * @PluginEvent(WAHAEvents.SESSION_STATUS)
+ * onSessionStatus(events$: Observable<WASessionStatusBody>) {
+ *   events$.subscribe({ next: ..., complete: ... });
+ * }
+ */
+export function PluginEvent(event: WAHAEvents) {
+  return function <K extends string, T extends Record<K, EventFn>>(
+    target: T,
+    propertyKey: K,
+    descriptor: PropertyDescriptor,
+  ): void {
+    getOwnEventSubscriptions(target.constructor).push({
+      event: event,
+      propertyKey: propertyKey,
+    });
+  };
+}
+
+/**
+ * Calls all @PluginEvent methods of the plugin's class with the session event observables.
+ */
+export function RegisterPluginEvents(plugin: SessionPlugin<any, any>) {
+  for (const meta of collectEventSubscriptions(plugin.constructor)) {
+    const method = (plugin as any)[meta.propertyKey].bind(plugin);
+    method(plugin.session.getEventObservable(meta.event));
+  }
+}

src/core/abc/session.plugin.hooks.ts

@@ -0,0 +1,129 @@
+import { SessionHooks } from '@waha/core/abc/session.hooks';
+import type { SessionPlugin } from '@waha/core/abc/session.plugin';
+import {
+  SyncBailHook,
+  SyncHook,
+  SyncLoopHook,
+  SyncWaterfallHook,
+} from 'tapable';
+
+/**
+ * Which tapable method the tap is registered with.
+ */
+export enum TapType {
+  /** tap() for sync hooks, tapPromise() for async ones - the default */
+  Auto = 'auto',
+  /** tap() - the method runs synchronously, its return value is used as is */
+  Sync = 'sync',
+  /** tapPromise() - the method result is awaited (works for sync methods too) */
+  Promise = 'promise',
+}
+
+/**
+ * Tapable tap options (tapable does not export its TapOptions type) and the tap type.
+ */
+export interface HookTapOptions {
+  before?: string;
+  stage?: number;
+  type?: TapType;
+}
+
+/**
+ * The method signature a hook accepts, sync or async - inferred from the hook's tap() method.
+ */
+type HookFn<H> = H extends {
+  tap(options: any, fn: (...args: infer A) => infer R): void;
+}
+  ? (...args: A) => R | Promise<R>
+  : never;
+
+type TapableHook = {
+  tap(options: any, fn: any): void;
+};
+
+interface HookTapMetadata {
+  selector: (hooks: SessionHooks) => TapableHook;
+  propertyKey: string;
+  options?: HookTapOptions;
+}
+
+const HOOK_TAPS = Symbol('PluginHookTaps');
+
+function getOwnHookTaps(ctor: any): HookTapMetadata[] {
+  if (!Object.prototype.hasOwnProperty.call(ctor, HOOK_TAPS)) {
+    ctor[HOOK_TAPS] = [];
+  }
+  return ctor[HOOK_TAPS];
+}
+
+function collectHookTaps(ctor: any): HookTapMetadata[] {
+  const taps: HookTapMetadata[] = [];
+  let current = ctor;
+  while (current) {
+    if (Object.prototype.hasOwnProperty.call(current, HOOK_TAPS)) {
+      taps.push(...current[HOOK_TAPS]);
+    }
+    current = Object.getPrototypeOf(current);
+  }
+  return taps;
+}
+
+// identity check, not instanceof - tapable reassigns hook.constructor while all hooks share the base Hook prototype
+const SYNC_HOOK_CLASSES: any[] = [
+  SyncHook,
+  SyncBailHook,
+  SyncLoopHook,
+  SyncWaterfallHook,
+];
+
+function isSyncHook(hook: any): boolean {
+  return SYNC_HOOK_CLASSES.includes(hook.constructor);
+}
+
+function useSyncTap(type: TapType, hook: any): boolean {
+  if (type === TapType.Sync) {
+    return true;
+  }
+  if (type === TapType.Promise) {
+    return false;
+  }
+  return isSyncHook(hook);
+}
+
+/**
+ * Taps the decorated (public) method into a session hook, stackable:
+ * @PluginHook((hooks) => hooks.wid.chat, { stage: Stage.FIRST })
+ */
+export function PluginHook<H extends TapableHook>(
+  selector: (hooks: SessionHooks) => H,
+  options?: HookTapOptions,
+) {
+  return function <K extends string, T extends Record<K, HookFn<H>>>(
+    target: T,
+    propertyKey: K,
+    descriptor: PropertyDescriptor,
+  ): void {
+    getOwnHookTaps(target.constructor).push({
+      selector: selector,
+      propertyKey: propertyKey,
+      options: options,
+    });
+  };
+}
+
+/**
+ * Applies all @PluginHook taps of the plugin's class to its session hooks, named after the plugin class.
+ */
+export function RegisterPluginHooks(plugin: SessionPlugin<any, any>) {
+  for (const meta of collectHookTaps(plugin.constructor)) {
+    const hook: any = meta.selector(plugin.session.hooks);
+    const { type, ...tapOptions } = meta.options ?? {};
+    const options = { name: plugin.constructor.name, ...tapOptions };
+    const method = (plugin as any)[meta.propertyKey].bind(plugin);
+    if (useSyncTap(type ?? TapType.Auto, hook)) {
+      hook.tap(options, method);
+    } else {
+      hook.tapPromise(options, async (...args: any[]) => method(...args));
+    }
+  }
+}

src/core/abc/session.plugin.registry.ts

@@ -0,0 +1,68 @@
+import type { WhatsappSession } from './session.abc';
+import { PluginOptions, SessionPlugin } from './session.plugin';
+import { RegisterPluginEvents } from './session.plugin.events';
+import { RegisterPluginHooks } from './session.plugin.hooks';
+
+interface PluginEntry {
+  id: string | null;
+  plugin: SessionPlugin<any, any>;
+}
+
+export class PluginRegistry {
+  private entries: PluginEntry[] = [];
+
+  constructor(private readonly session: WhatsappSession) {}
+
+  /**
+   * Construct the plugin with the session and a child logger, and store it. Hooks and events are registered later, in attach().
+   * id distinguishes multiple instances of the same plugin class (e.g. apps pass their app id) and enables get(Class, id).
+   */
+  add<Plugin extends SessionPlugin<Config, Deps>, Config, Deps = null>(
+    options: PluginOptions<Plugin, Config, Deps>,
+    id?: string,
+  ): Plugin {
+    const PluginClass = options.plugin;
+    const logger = this.session.loggerBuilder.child({
+      plugin: PluginClass.name,
+    });
+    const plugin = new PluginClass(
+      this.session,
+      logger,
+      options.config,
+      options.deps,
+    );
+    this.entries.push({ id: id ?? null, plugin: plugin });
+    return plugin;
+  }
+
+  /**
+   * The first plugin matching the class (instanceof), and the id when provided.
+   */
+  get<Plugin extends SessionPlugin<any, any>>(
+    PluginClass: abstract new (...args: any[]) => Plugin,
+    id?: string,
+  ): Plugin | null {
+    for (const entry of this.entries) {
+      if (!(entry.plugin instanceof PluginClass)) {
+        continue;
+      }
+      if (id != null && entry.id !== id) {
+        continue;
+      }
+      return entry.plugin;
+    }
+    return null;
+  }
+
+  /**
+   * Register @PluginHook and @PluginEvent handlers for all plugins and run their attach().
+   * Deferred until all plugins (core, engine, apps) are added.
+   */
+  attach(): void {
+    for (const entry of this.entries) {
+      RegisterPluginHooks(entry.plugin);
+      RegisterPluginEvents(entry.plugin);
+      entry.plugin.attach();
+    }
+  }
+}

src/core/abc/session.plugin.ts

@@ -0,0 +1,59 @@
+import type { WhatsappSession } from '@waha/core/abc/session.abc';
+import { Logger } from 'pino';
+
+/**
+ * Constructor contract for session plugins - SessionPlugin (and any subclass) conforms to it: (session, logger, config, deps).
+ * deps holds extra plugin-specific dependencies (e.g. { repository }); plugins without dependencies just omit the parameter.
+ */
+export interface SessionPluginConstructor<
+  Plugin extends SessionPlugin<Config, Deps>,
+  Config,
+  Deps = null,
+> {
+  new (
+    session: WhatsappSession,
+    logger: Logger,
+    config: Config,
+    deps: Deps,
+  ): Plugin;
+}
+
+/**
+ * A plugin class with its config and deps bound, ready to be constructed with a session and logger -
+ * build it with Plugin.with(config, deps). config and deps are always explicit - pass null when the plugin has none.
+ */
+export interface PluginOptions<
+  Plugin extends SessionPlugin<Config, Deps> = SessionPlugin<any, any>,
+  Config = any,
+  Deps = any,
+> {
+  plugin: SessionPluginConstructor<Plugin, Config, Deps>;
+  config: NoInfer<Config>;
+  deps: NoInfer<Deps>;
+}
+
+export abstract class SessionPlugin<Config = null, Deps = null> {
+  constructor(
+    public readonly session: WhatsappSession,
+    protected logger: Logger,
+    protected config: Config,
+    protected deps: Deps,
+  ) {}
+
+  /**
+   * Override for custom wiring (event subscriptions, extra hooks); keep constructors construction-only.
+   */
+  attach(): void {}
+
+  /**
+   * Bind config and deps to the plugin class, type-checked against its constructor.
+   * Whoever registers the plugin supplies session and logger.
+   */
+  static with<Plugin extends SessionPlugin<Config, Deps>, Config, Deps = null>(
+    this: SessionPluginConstructor<Plugin, Config, Deps>,
+    config: NoInfer<Config>,
+    deps: NoInfer<Deps>,
+  ): PluginOptions<Plugin, Config, Deps> {
+    return { plugin: this, config: config, deps: deps };
+  }
+}

src/core/app.module.core.ts

@@ -5,7 +5,6 @@ import { Provider } from '@nestjs/common/interfaces/modules/provider.interface';
 import { ConditionalModule, ConfigModule } from '@nestjs/config';
 import { APP_INTERCEPTOR } from '@nestjs/core';
 import { PassportModule } from '@nestjs/passport';
-import { ServeStaticModule } from '@nestjs/serve-static';
 import { TerminusModule } from '@nestjs/terminus';
 import { ChannelsController } from '@waha/api/channels.controller';
 import { LidsController } from '@waha/api/lids.controller';
@@ -19,15 +18,33 @@ import { ContactsSessionController } from '@waha/api/contacts.session.controller
 import { ApiKeyStrategy } from '@waha/core/auth/apiKey.strategy';
 import { IApiKeyAuth } from '@waha/core/auth/auth';
 import { ApiKeyAuthMiddleware } from '@waha/core/auth/api-key-auth.middleware';
-import { BasicAuthFunction } from '@waha/core/auth/basicAuth';
 import { WebSocketAuth } from '@waha/core/auth/WebSocketAuth';
 import { GowsEngineConfigService } from '@waha/core/config/GowsEngineConfigService';
+import { NowebEngineConfigService } from '@waha/core/config/NowebEngineConfigService';
 import { WPPEngineConfigService } from '@waha/core/config/WPPEngineConfigService';
 import { WebJSEngineConfigService } from '@waha/core/config/WebJSEngineConfigService';
 import { MediaLocalStorageModule } from '@waha/core/media/local/media.local.storage.module';
 import { MediaLocalStorageConfig } from '@waha/core/media/local/MediaLocalStorageConfig';
 import { MediaPsqlStorageModule } from '@waha/core/media/psql/media.psql.storage.module';
 import { MediaS3StorageModule } from '@waha/core/media/s3/media.s3.storage.module';
+import { HttpPathsModule } from '@waha/plugins/http.paths.module';
+import { HttpPathsService } from '@waha/plugins/HttpPathsService';
+import { AppBootstrapModule } from '@waha/plugins/app.bootstrap.module';
+import { SessionPluginsModule } from '@waha/plugins/session.plugins.module';
+import { isDashboardEnabled } from '@waha/modules/waha-dashboard/dashboard.config';
+import { DashboardModule } from '@waha/modules/waha-dashboard/dashboard.module';
+import { isSwaggerEnabled } from '@waha/modules/waha-swagger/swagger.config';
+import { SwaggerEnabledModule } from '@waha/modules/waha-swagger/swagger.module.enabled';
+import { isPresenceAutoOnlineEnabled } from '@waha/modules/waha-maintain-online-status/maintain-online-status.config';
+import { MaintainOnlineStatusModule } from '@waha/modules/waha-maintain-online-status/maintain-online-status.module';
+import { isJidEngine } from '@waha/modules/waha-wid-jid/wid-jid.plugins';
+import { MessageSourceModule } from '@waha/modules/waha-message-source/message-source.module';
+import { isPrometheusEnabled } from '@waha/modules/waha-prometheus/prometheus.config';
+import { PrometheusModule } from '@waha/modules/waha-prometheus/prometheus.module';
+import { WebhookModule } from '@waha/modules/waha-webhook/webhook.module';
+import { SessionRuntimeInfoModule } from '@waha/modules/waha-session-runtime-info/session-runtime-info.module';
+import { WidJIDModule } from '@waha/modules/waha-wid-jid/wid-jid.module';
+import { WidSuffixModule } from '@waha/modules/waha-wid-suffix/wid-suffix.module';
 import { CheckFreeDiskSpaceIndicator } from '@waha/core/health/CheckFreeDiskSpaceIndicator';
 import { MongoStoreHealthIndicator } from '@waha/core/health/MongoStoreHealthIndicator';
 import { ChannelsInfoServiceCore } from '@waha/core/services/ChannelsInfoServiceCore';
@@ -44,7 +61,6 @@ import {
 import * as Joi from 'joi';
 import { LoggerModule } from 'nestjs-pino';
 import { Logger as NestJSPinoLogger } from 'nestjs-pino';
-import { join } from 'path';
 import { Logger } from 'pino';
 
 import { AuthController } from '../api/auth.controller';
@@ -67,9 +83,7 @@ import { WhatsappConfigService } from '../config.service';
 import { SessionManager } from './abc/manager.abc';
 import { WAHAHealthCheckService } from './abc/WAHAHealthCheckService';
 import { ApiKeyAuthFactory } from './auth/ApiKeyAuthFactory';
-import { DashboardConfigServiceCore } from './config/DashboardConfigServiceCore';
 import { EngineConfigService } from './config/EngineConfigService';
-import { SwaggerConfigServiceCore } from './config/SwaggerConfigServiceCore';
 import { WAHAHealthCheckServiceCore } from './health/WAHAHealthCheckServiceCore';
 import { SessionManagerCore } from './manager.core';
 import { CaslAbilityFactory } from '@waha/core/auth/casl.ability';
@@ -79,40 +93,37 @@ import { SessionService } from '@waha/core/services/SessionService';
 
 export const IMPORTS_CORE = [
   ...AppsModuleExports.imports,
-  LoggerModule.forRoot({
-    renameContext: 'name',
-    pinoHttp: {
-      quietReqLogger: true,
-      level: getPinoLogLevel(),
-      useLevel: getPinoHttpUseLevel(),
-      transport: getPinoTransport(),
-      autoLogging: {
-        ignore: (req) => {
-          return (
-            req.url.startsWith('/ping') ||
-            req.url.startsWith('/dashboard/') ||
-            req.url.startsWith('/api/files/') ||
-            req.url.startsWith('/api/s3/') ||
-            req.url.startsWith('/jobs/')
-          );
+  LoggerModule.forRootAsync({
+    imports: [HttpPathsModule],
+    inject: [HttpPathsService],
+    useFactory: (httpPaths: HttpPathsService) => {
+      return {
+        renameContext: 'name',
+        pinoHttp: {
+          level: getPinoLogLevel(),
+          useLevel: getPinoHttpUseLevel(),
+          transport: getPinoTransport(),
+          autoLogging: {
+            ignore: (req) => httpPaths.isAccessLogIgnored(req.url),
+          },
+          redact: {
+            paths: ['req.query["x-api-key"]'],
+            censor: '[REDACTED]',
+          },
+          customAttributeKeys: { req: 'req', res: 'res' },
+          serializers: {
+            req: (req) => ({
+              method: req.method,
+              url: redactUrlParams('x-api-key', req.url, req.query),
+              query: req.query,
+              params: req.params,
+            }),
+            res: (res) => ({
+              statusCode: res.statusCode,
+            }),
+          },
         },
-      },
-      redact: {
-        paths: ['req.query["x-api-key"]'],
-        censor: '[REDACTED]',
-      },
-      serializers: {
-        req: (req) => ({
-          id: req.id,
-          method: req.method,
-          url: redactUrlParams('x-api-key', req.url, req.query),
-          query: req.query,
-          params: req.params,
-        }),
-        res: (res) => ({
-          statusCode: res.statusCode,
-        }),
-      },
+      };
     },
   }),
   ConfigModule.forRoot({
@@ -121,24 +132,32 @@ export const IMPORTS_CORE = [
       WHATSAPP_API_SCHEMA: Joi.string().valid('http', 'https').default('http'),
     }),
   }),
-  ServeStaticModule.forRootAsync({
-    imports: [],
-    extraProviders: [DashboardConfigServiceCore],
-    inject: [DashboardConfigServiceCore],
-    useFactory: (dashboardConfig: DashboardConfigServiceCore) => {
-      if (!dashboardConfig.enabled) {
-        return [];
-      }
-      return [
-        {
-          rootPath: join(__dirname, '..', 'dashboard'),
-          serveRoot: dashboardConfig.dashboardUri,
-        },
-      ];
-    },
-  }),
   PassportModule,
   TerminusModule,
+  AppBootstrapModule,
+  HttpPathsModule,
+  SessionPluginsModule,
+  SessionRuntimeInfoModule,
+  WebhookModule,
+  MessageSourceModule,
+  WidSuffixModule,
+  ConditionalModule.registerWhen(WidJIDModule, isJidEngine, {
+    debug: isDebugEnabled(),
+  }),
+  ConditionalModule.registerWhen(
+    MaintainOnlineStatusModule,
+    isPresenceAutoOnlineEnabled,
+    { debug: isDebugEnabled() },
+  ),
+  ConditionalModule.registerWhen(PrometheusModule, isPrometheusEnabled, {
+    debug: isDebugEnabled(),
+  }),
+  ConditionalModule.registerWhen(DashboardModule, isDashboardEnabled, {
+    debug: isDebugEnabled(),
+  }),
+  ConditionalModule.registerWhen(SwaggerEnabledModule, isSwaggerEnabled, {
+    debug: isDebugEnabled(),
+  }),
 ];
 
 const IMPORTS_MEDIA = [
@@ -200,11 +219,10 @@ export const PROVIDERS_BASE: Provider[] = [
     provide: APP_INTERCEPTOR,
     useClass: BufferJsonReplacerInterceptor,
   },
-  DashboardConfigServiceCore,
-  SwaggerConfigServiceCore,
   WebJSEngineConfigService,
   WPPEngineConfigService,
   GowsEngineConfigService,
+  NowebEngineConfigService,
   WhatsappConfigService,
   EngineConfigService,
   WebsocketGatewayCore,
@@ -248,9 +266,21 @@ export class AppModuleCore {
 
   constructor(
     protected config: WhatsappConfigService,
-    private dashboardConfig: DashboardConfigServiceCore,
+    private httpPaths: HttpPathsService,
   ) {
     this.startTimestamp = Date.now();
+    this.httpPaths.register(
+      { prefix: '/ping', include: { accessLog: false, authBasic: false } },
+      { prefix: '/api/', include: { authBasic: false } },
+      { prefix: 'api', include: { authApiKey: true } },
+      { prefix: '/health', include: { authBasic: false } },
+      { prefix: 'health', include: { authApiKey: true } },
+      { prefix: '/ws', include: { authBasic: false } },
+    );
+    // WHATSAPP_API_KEY_EXCLUDE_PATH - env-driven auth exclusions
+    for (const path of this.config.getExcludedFullPaths()) {
+      this.httpPaths.register({ prefix: path, include: { authBasic: false } });
+    }
   }
 
   static getHttpsOptions(logger: Logger) {
@@ -279,16 +309,6 @@ export class AppModuleCore {
     consumer
       .apply(ApiKeyAuthMiddleware)
       .exclude(...exclude)
-      .forRoutes('api', 'health', 'mcp');
-
-    // Dashboard
-    const dashboardCredentials = this.dashboardConfig.credentials;
-    if (dashboardCredentials) {
-      const username = dashboardCredentials[0];
-      const password = dashboardCredentials[1];
-      consumer
-        .apply(BasicAuthFunction(username, password))
-        .forRoutes('dashboard');
-    }
+      .forRoutes(...this.httpPaths.apiKeyRoutes());
   }
 }

src/core/config/DashboardConfigServiceCore.ts

@@ -1,38 +0,0 @@
-import { Injectable, Logger } from '@nestjs/common';
-import { ConfigService } from '@nestjs/config';
-import { InjectPinoLogger, PinoLogger } from 'nestjs-pino';
-
-import { parseBool } from '../../helpers';
-import { Auth } from '@waha/core/auth/config';
-
-@Injectable()
-export class DashboardConfigServiceCore {
-  public dashboardUri = '/dashboard';
-
-  constructor(
-    protected configService: ConfigService,
-    @InjectPinoLogger('DashboardConfigService')
-    protected logger: PinoLogger,
-  ) {}
-
-  get enabled(): boolean {
-    const value = this.configService.get('WAHA_DASHBOARD_ENABLED', 'true');
-    return parseBool(value);
-  }
-
-  get credentials(): [string, string] | null {
-    const user = Auth.dashboard.username.value || '';
-    const password = Auth.dashboard.password.value || '';
-    if (!user && !password) {
-      return null;
-    }
-    if ((user && !password) || (!user && password)) {
-      this.logger.warn(
-        'Set up both WAHA_DASHBOARD_USERNAME and WAHA_DASHBOARD_PASSWORD ' +
-          'to enable dashboard authentication.',
-      );
-      return null;
-    }
-    return [user, password];
-  }
-}