diff --git a/src/bitacora_mesa/bitacora_mesa.service.ts b/src/bitacora_mesa/bitacora_mesa.service.ts
index c65ef86..a46d9ae 100644
--- a/src/bitacora_mesa/bitacora_mesa.service.ts
+++ b/src/bitacora_mesa/bitacora_mesa.service.ts
@@ -14,8 +14,7 @@ export class BitacoraMesaService {
   ) { }
 
   async assignment(dto: CreateBitacoraMesaDto) {
-
-    //  VALIDAR: el alumno ya tiene una mesa activa
+ 
     const alumnoConMesa = await this.bitacoraMesaRepository
       .createQueryBuilder('bitacora')
       .where('bitacora.id_alumno_inscrito = :id_alumno_inscrito', {
diff --git a/src/costo/costo.controller.ts b/src/costo/costo.controller.ts
index 59883e8..79ef6fd 100644
--- a/src/costo/costo.controller.ts
+++ b/src/costo/costo.controller.ts
@@ -4,7 +4,7 @@ import { JwtAuthGuard } from 'src/user/jwt.guard';
 
 @Controller('costo')
 export class CostoController {
-  constructor(private readonly costoService: CostoService) {}
+  constructor(private readonly costoService: CostoService) { }
 
   @UseGuards(JwtAuthGuard)
   @Get()
@@ -12,4 +12,9 @@ export class CostoController {
     return this.costoService.findAll();
   }
 
+  @UseGuards(JwtAuthGuard)
+  @Get('/:id_servicio')
+  find(@Param('id_servicio') id_servicio: number) {
+    return this.costoService.find(id_servicio);
+  }
 }
diff --git a/src/costo/costo.service.ts b/src/costo/costo.service.ts
index a974a81..a989633 100644
--- a/src/costo/costo.service.ts
+++ b/src/costo/costo.service.ts
@@ -6,9 +6,14 @@ import { Repository } from 'typeorm';
 @Injectable()
 export class CostoService {
   constructor(@InjectRepository(Costo)
-  private readonly CostoRepository: Repository<Costo>) { }
+  private readonly CostoRepository: Repository<Costo>) {}
+  
   findAll() {
     return this.CostoRepository.find();
   }
 
+  find(id_servicio: number) {
+    return this.CostoRepository.find({ where: { id_servicio } });
+  }
+
 }
diff --git a/src/mesa/mesa.controller.ts b/src/mesa/mesa.controller.ts
index 8ba9638..356f17c 100644
--- a/src/mesa/mesa.controller.ts
+++ b/src/mesa/mesa.controller.ts
@@ -19,6 +19,12 @@ export class MesaController {
     return this.mesaService.findAllActivo();
   }
   
+  @UseGuards(JwtAuthGuard)
+  @Get('uso')
+  async findActiveMesas() {
+    return this.mesaService.findActiveMesas();
+  }
+
   @UseGuards(JwtAuthGuard)
   @Patch(':id')
   async updateActivo(
diff --git a/src/mesa/mesa.service.ts b/src/mesa/mesa.service.ts
index 03b63b7..c6189ec 100644
--- a/src/mesa/mesa.service.ts
+++ b/src/mesa/mesa.service.ts
@@ -119,4 +119,27 @@ export class MesaService {
       activo: nuevoActivo,
     };
   }
+
+  findActiveMesas() {
+    return this.mesaRepository
+      .createQueryBuilder('mesa')
+      .select([
+        'mesa.id_mesa AS id_mesa',
+        `
+      EXISTS (
+        SELECT 1
+        FROM bitacora_mesa bm
+        WHERE bm.id_mesa = mesa.id_mesa
+          AND TIMESTAMPDIFF(
+            SECOND,
+            NOW(),
+            DATE_ADD(bm.tiempo_entrada, INTERVAL bm.tiempo_asignado MINUTE)
+          ) > 0
+      ) AS ocupado
+      `,
+      ])
+      .where('mesa.activo = 1')
+      .orderBy('mesa.id_mesa', 'ASC')
+      .getRawMany();
+  }
 }
diff --git a/src/user/user.controller.ts b/src/user/user.controller.ts
index c4facd9..e94f755 100644
--- a/src/user/user.controller.ts
+++ b/src/user/user.controller.ts
@@ -28,7 +28,6 @@ export class UserController {
     return this.userService.getAllPerfil();
   }
 
-  @UseGuards(JwtAuthGuard)
   @Post()
   async Login(@Body() data: Login, @Res() res: Response) {
     return this.userService.Login(data, res);