diff --git a/server/src/contexts/auth/application/authServices.ts b/server/src/contexts/auth/application/authServices.ts
index be25c8e..941d1be 100644
--- a/server/src/contexts/auth/application/authServices.ts
+++ b/server/src/contexts/auth/application/authServices.ts
@@ -14,3 +14,26 @@ export const findUserByEmail = async (
       repository({ transaction: t }).findUserByEmail(email),
     );
 };
+
+/*export class AuthService extends ApplicationService {
+  private _adapter: ISequelizeAdapter;
+  private _repository: IRepositoryManager;
+  private _authRepository: IAuthRepository;
+
+  constructor(props: {
+    adapter: ISequelizeAdapter,
+    repository: IRepositoryManager,
+  }) {
+    super();
+    this._adapter = props.adapter;
+
+    this._repository = props.repository;
+
+    this._repository.getRepository<IAuthRepository>("auth")
+
+    this._authRepository = ;
+  }
+
+
+}
+*/
diff --git a/server/src/contexts/common/application/services/index.ts b/server/src/contexts/common/application/services/index.ts
index d0508d6..8975c2e 100644
--- a/server/src/contexts/common/application/services/index.ts
+++ b/server/src/contexts/common/application/services/index.ts
@@ -1 +1,2 @@
-export * from './QueryCriteriaService';
+export * from "./ApplicationService";
+export * from "./QueryCriteriaService";
diff --git a/server/src/contexts/common/infrastructure/sequelize/SequelizeRepository.ts b/server/src/contexts/common/infrastructure/sequelize/SequelizeRepository.ts
index f6e550c..043d90f 100644
--- a/server/src/contexts/common/infrastructure/sequelize/SequelizeRepository.ts
+++ b/server/src/contexts/common/infrastructure/sequelize/SequelizeRepository.ts
@@ -4,19 +4,17 @@ import { ModelDefined, Transaction } from "sequelize";
 
 import { IRepository } from "../../domain/repositories";
 import { ISequelizeAdapter } from "./SequelizeAdapter";
-import { ISequelizeQueryBuilder } from "./queryBuilder/SequelizeQueryBuilder";
 
 export abstract class SequelizeRepository<T> implements IRepository<T> {
-  protected queryBuilder: ISequelizeQueryBuilder;
-  protected transaction: Transaction;
-  protected adapter: ISequelizeAdapter;
+  protected _transaction: Transaction;
+  protected _adapter: ISequelizeAdapter;
+
   public constructor(props: {
     adapter: ISequelizeAdapter;
     transaction: Transaction;
   }) {
-    this.adapter = props.adapter;
-    this.transaction = props.transaction;
-    this.queryBuilder = this.adapter.queryBuilder;
+    this._adapter = props.adapter;
+    this._transaction = props.transaction;
   }
 
   protected getById(id: UniqueID): Promise<T | null> {
@@ -53,14 +51,14 @@ export abstract class SequelizeRepository<T> implements IRepository<T> {
     value: any,
     params: any = {},
   ): Promise<T> {
-    const _model = this.adapter.getModel(modelName);
+    const _model = this._adapter.getModel(modelName);
     const where: { [key: string]: any } = {};
 
     where[field] = value;
 
     return _model.findOne({
       where,
-      transaction: this.transaction,
+      transaction: this._transaction,
       ...params,
     });
   }
@@ -70,7 +68,7 @@ export abstract class SequelizeRepository<T> implements IRepository<T> {
     id: UniqueID | string,
     params: any = {},
   ): Promise<T> {
-    const _model = this.adapter.getModel(modelName);
+    const _model = this._adapter.getModel(modelName);
     return _model.findByPk(id.toString(), params);
   }
 
@@ -81,15 +79,15 @@ export abstract class SequelizeRepository<T> implements IRepository<T> {
   ): Promise<{ rows: any[]; count: number }> {
     console.time("_findAll");
 
-    const { model: _model, query } = this.queryBuilder.generateQuery({
-      model: this.adapter.getModel(modelName),
+    const { model: _model, query } = this._adapter.queryBuilder.generateQuery({
+      model: this._adapter.getModel(modelName),
       queryCriteria,
     });
 
     const args = {
       ...query,
       distinct: true,
-      transaction: this.transaction,
+      transaction: this._transaction,
       ...params,
     };
 
@@ -106,13 +104,13 @@ export abstract class SequelizeRepository<T> implements IRepository<T> {
     value: any,
     params: any = {},
   ): Promise<boolean> {
-    const _model = this.adapter.getModel(modelName) as ModelDefined<any, any>;
+    const _model = this._adapter.getModel(modelName) as ModelDefined<any, any>;
     const where = {};
     where[field] = value;
 
     const count: number = await _model.count({
       where,
-      transaction: this.transaction,
+      transaction: this._transaction,
     });
 
     return Promise.resolve(Boolean(count !== 0));
@@ -124,7 +122,7 @@ export abstract class SequelizeRepository<T> implements IRepository<T> {
     data: any,
     params: any = {},
   ): Promise<void> {
-    const _model = this.adapter.getModel(modelName);
+    const _model = this._adapter.getModel(modelName);
 
     if (await this._exists(modelName, "id", id.toPrimitive())) {
       await _model.update(
@@ -134,7 +132,7 @@ export abstract class SequelizeRepository<T> implements IRepository<T> {
         },
         {
           where: { id: id.toPrimitive() },
-          transaction: this.transaction,
+          transaction: this._transaction,
           ...params,
         },
       );
@@ -146,7 +144,7 @@ export abstract class SequelizeRepository<T> implements IRepository<T> {
         },
         {
           include: [{ all: true }],
-          transaction: this.transaction,
+          transaction: this._transaction,
           ...params,
         },
       );
@@ -159,13 +157,13 @@ export abstract class SequelizeRepository<T> implements IRepository<T> {
     force: boolean = false,
     params: any = {},
   ): Promise<void> {
-    const model: ModelDefined<any, any> = this.adapter.getModel(modelName);
+    const model: ModelDefined<any, any> = this._adapter.getModel(modelName);
 
     await model.destroy({
       where: {
         id: id.toPrimitive(),
       },
-      transaction: this.transaction,
+      transaction: this._transaction,
       force,
       logging: console.log,
     });