diff --git a/src/api/controllers/instance.controller.ts b/src/api/controllers/instance.controller.ts
index 0ffa885d..0d743f37 100644
--- a/src/api/controllers/instance.controller.ts
+++ b/src/api/controllers/instance.controller.ts
@@ -3,9 +3,9 @@ import { isURL } from 'class-validator';
 import EventEmitter2 from 'eventemitter2';
 import { v4 } from 'uuid';
 
-import { ConfigService, HttpServer, WaBusiness } from '../../config/env.config';
+import { Auth, ConfigService, HttpServer, WaBusiness } from '../../config/env.config';
 import { Logger } from '../../config/logger.config';
-import { BadRequestException, InternalServerErrorException } from '../../exceptions';
+import { BadRequestException, InternalServerErrorException, UnauthorizedException } from '../../exceptions';
 import { InstanceDto, SetPresenceDto } from '../dto/instance.dto';
 import { ChatwootService } from '../integrations/chatwoot/services/chatwoot.service';
 import { RabbitmqService } from '../integrations/rabbitmq/services/rabbitmq.service';
@@ -679,11 +679,27 @@ export class InstanceController {
     };
   }
 
-  public async fetchInstances({ instanceName, instanceId, number }: InstanceDto) {
-    if (instanceName) {
-      this.logger.verbose('requested fetchInstances from ' + instanceName + ' instance');
-      this.logger.verbose('instanceName: ' + instanceName);
-      return this.waMonitor.instanceInfo(instanceName);
+  public async fetchInstances({ instanceName, instanceId, number }: InstanceDto, key: string) {
+    const env = this.configService.get<Auth>('AUTHENTICATION').API_KEY;
+
+    let name = instanceName;
+    let arrayReturn = false;
+
+    if (env.KEY !== key) {
+      const instanceByKey = await this.repository.auth.findByKey(key);
+      console.log('instanceByKey', instanceByKey);
+      if (instanceByKey) {
+        name = instanceByKey._id;
+        arrayReturn = true;
+      } else {
+        throw new UnauthorizedException();
+      }
+    }
+
+    if (name) {
+      this.logger.verbose('requested fetchInstances from ' + name + ' instance');
+      this.logger.verbose('instanceName: ' + name);
+      return this.waMonitor.instanceInfo(name, arrayReturn);
     } else if (instanceId || number) {
       return this.waMonitor.instanceInfoById(instanceId, number);
     }
diff --git a/src/api/guards/auth.guard.ts b/src/api/guards/auth.guard.ts
index ccc73a58..b7c7c7c0 100644
--- a/src/api/guards/auth.guard.ts
+++ b/src/api/guards/auth.guard.ts
@@ -59,6 +59,10 @@ async function apikey(req: Request, _: Response, next: NextFunction) {
   const env = configService.get<Auth>('AUTHENTICATION').API_KEY;
   const key = req.get('apikey');
 
+  if (!key) {
+    throw new UnauthorizedException();
+  }
+
   if (env.KEY === key) {
     return next();
   }
@@ -66,12 +70,19 @@ async function apikey(req: Request, _: Response, next: NextFunction) {
   if ((req.originalUrl.includes('/instance/create') || req.originalUrl.includes('/instance/fetchInstances')) && !key) {
     throw new ForbiddenException('Missing global api key', 'The global api key must be set');
   }
+  const param = req.params as unknown as InstanceDto;
 
   try {
-    const param = req.params as unknown as InstanceDto;
-    const instanceKey = await repository.auth.find(param.instanceName);
-    if (instanceKey.apikey === key) {
-      return next();
+    if (param?.instanceName) {
+      const instanceKey = await repository.auth.find(param.instanceName);
+      if (instanceKey?.apikey === key) {
+        return next();
+      }
+    } else {
+      const instanceByKey = await repository.auth.findByKey(key);
+      if (instanceByKey) {
+        return next();
+      }
     }
   } catch (error) {
     logger.error(error);
diff --git a/src/api/repository/auth.repository.ts b/src/api/repository/auth.repository.ts
index 1e4bbb81..6a296902 100644
--- a/src/api/repository/auth.repository.ts
+++ b/src/api/repository/auth.repository.ts
@@ -68,6 +68,20 @@ export class AuthRepository extends Repository {
     }
   }
 
+  public async findByKey(key: string): Promise<AuthRaw> {
+    try {
+      this.logger.verbose('finding auth');
+      if (this.dbSettings.ENABLED) {
+        this.logger.verbose('finding auth in db');
+        return await this.authModel.findOne({ apikey: key });
+      }
+
+      return {};
+    } catch (error) {
+      return {};
+    }
+  }
+
   public async list(): Promise<AuthRaw[]> {
     try {
       if (this.dbSettings.ENABLED) {
diff --git a/src/api/routes/instance.router.ts b/src/api/routes/instance.router.ts
index a56271a4..d2cc6fb8 100644
--- a/src/api/routes/instance.router.ts
+++ b/src/api/routes/instance.router.ts
@@ -103,13 +103,15 @@ export class InstanceRouter extends RouterBroker {
         logger.verbose('request body: ');
         logger.verbose(req.body);
 
+        const key = req.get('apikey');
+
         logger.verbose('request query: ');
         logger.verbose(req.query);
         const response = await this.dataValidate<InstanceDto>({
           request: req,
           schema: null,
           ClassRef: InstanceDto,
-          execute: (instance) => instanceController.fetchInstances(instance),
+          execute: (instance) => instanceController.fetchInstances(instance, key),
         });
 
         return res.status(HttpStatus.OK).json(response);
diff --git a/src/api/services/monitor.service.ts b/src/api/services/monitor.service.ts
index afeffa95..af93fa74 100644
--- a/src/api/services/monitor.service.ts
+++ b/src/api/services/monitor.service.ts
@@ -83,7 +83,7 @@ export class WAMonitoringService {
     }
   }
 
-  public async instanceInfo(instanceName?: string) {
+  public async instanceInfo(instanceName?: string, arrayReturn = false) {
     this.logger.verbose('get instance info');
     if (instanceName && !this.waInstances[instanceName]) {
       throw new NotFoundException(`Instance "${instanceName}" not found`);
@@ -171,6 +171,9 @@ export class WAMonitoringService {
 
     this.logger.verbose('return instance info: ' + instances.length);
 
+    if (arrayReturn) {
+      return [instances.find((i) => i.instance.instanceName === instanceName) ?? instances];
+    }
     return instances.find((i) => i.instance.instanceName === instanceName) ?? instances;
   }