diff --git a/apis/authCommand/Infrastructure/repositories/mongoose/user.repository.ts b/apis/authCommand/Infrastructure/repositories/mongoose/user.repository.ts
index 0b80ad0..ae3f33f 100644
--- a/apis/authCommand/Infrastructure/repositories/mongoose/user.repository.ts
+++ b/apis/authCommand/Infrastructure/repositories/mongoose/user.repository.ts
@@ -15,12 +15,35 @@ export class UserRepository implements UserRepositoryInterface {
     this.model = mongoose.model("User",userSchema);
   }
 
-  create(user: User): Promise<void> {
-    throw new Error("Method not implemented.");
-  }
-
   async findByEmail(email: string): Promise<User | null> {
     const userData = await this.model.findOne({ email });
     return userData ? new User(userData.email, userData.password, userData.role, userData.id) : null;
   }
+  
+  async findById(id: string): Promise<User | null> {
+    const userData = await this.model.findById(id);
+    return userData ? new User(userData.email, userData.password, userData.role, userData.id) : null;
+  }
+
+  async create(user: User): Promise<User> {
+    const userData = await this.model.create(user);
+    return new User(userData.email, userData.password, userData.role, userData.id);
+  }
+
+  // TODO: Implement the update method & Cie
+  async update(user: User): Promise<User> {
+    const userData = await this.model.findByIdAndUpdate
+    (user.id, { email: user.email, password: user.password, role: user.role }, { new: true });
+    return new User(userData.email, userData.id);
+  }
+  async updateRole(id: string, password: string): Promise<User> {
+    throw new Error("Method not implemented.");
+  }
+  async updatePassword(id: string, password: string): Promise<User> {
+    throw new Error("Method not implemented.");
+  }
+
+  async delete(id: string): Promise<void> {
+    throw new Error("Method not implemented.");
+  }
 }
diff --git a/apis/authCommand/Interface/controllers/auth/delete.controller.ts b/apis/authCommand/Interface/controllers/auth/delete.controller.ts
new file mode 100644
index 0000000..c0b7ac2
--- /dev/null
+++ b/apis/authCommand/Interface/controllers/auth/delete.controller.ts
@@ -0,0 +1 @@
+// TODO: 
\ No newline at end of file
diff --git a/apis/authCommand/Interface/controllers/auth/update.controller.ts b/apis/authCommand/Interface/controllers/auth/update.controller.ts
new file mode 100644
index 0000000..c0b7ac2
--- /dev/null
+++ b/apis/authCommand/Interface/controllers/auth/update.controller.ts
@@ -0,0 +1 @@
+// TODO: 
\ No newline at end of file
diff --git a/apis/authCommand/Interface/routes/auth.routes.ts b/apis/authCommand/Interface/routes/auth.routes.ts
index a88a0c0..fa0a6c8 100644
--- a/apis/authCommand/Interface/routes/auth.routes.ts
+++ b/apis/authCommand/Interface/routes/auth.routes.ts
@@ -3,8 +3,12 @@ import { SignUpController } from "../controllers/auth/sign-up.controller";
 
 const router = express.Router();
 
-// router.post("/login", AuthController.login);
 const signUpController = new SignUpController();
 router.post("/register", signUpController.register.bind(signUpController));
+// router.post("/change-password", AuthController.changePassword);
+// router.put("/update", AuthController.update);
+// router.put("/update-role", AuthController.updateRole);
+// router.put("/update-password", AuthController.updatePassword);
+// router.delete("/delete", AuthController.delete);
 
 export default router;
diff --git a/apis/authCommand/application/dtos/auth/change.password.user.dto.ts b/apis/authCommand/application/dtos/auth/change.password.user.dto.ts
new file mode 100644
index 0000000..ba9b924
--- /dev/null
+++ b/apis/authCommand/application/dtos/auth/change.password.user.dto.ts
@@ -0,0 +1,5 @@
+export interface ChangePasswordUserDTO {
+  userId: string;
+  password: string;
+  token: string;
+}
\ No newline at end of file
diff --git a/apis/authCommand/application/dtos/auth/change.role.user.dto.ts b/apis/authCommand/application/dtos/auth/change.role.user.dto.ts
new file mode 100644
index 0000000..5191002
--- /dev/null
+++ b/apis/authCommand/application/dtos/auth/change.role.user.dto.ts
@@ -0,0 +1,7 @@
+import { Role } from "../../../domain/enums";
+
+export interface ChangeRoleUserDTO {
+  userId: string;
+  role: Role;
+  token: string;
+}
\ No newline at end of file
diff --git a/apis/authCommand/application/dtos/auth/delete.user.dto.ts b/apis/authCommand/application/dtos/auth/delete.user.dto.ts
new file mode 100644
index 0000000..1a890be
--- /dev/null
+++ b/apis/authCommand/application/dtos/auth/delete.user.dto.ts
@@ -0,0 +1,4 @@
+export interface DeleteUserDTO {
+  id: string;
+  token: string;
+}
\ No newline at end of file
diff --git a/apis/authCommand/application/dtos/auth/index.ts b/apis/authCommand/application/dtos/auth/index.ts
index f4e811d..7df341f 100644
--- a/apis/authCommand/application/dtos/auth/index.ts
+++ b/apis/authCommand/application/dtos/auth/index.ts
@@ -1,2 +1,5 @@
-export * from "./login.user.dto";
-export * from "./register.user.dto";
\ No newline at end of file
+export * from "./change.password.user.dto";
+export * from "./change.role.user.dto";
+export * from "./delete.user.dto";
+export * from "./register.user.dto";
+export * from "./update.user.dto";
\ No newline at end of file
diff --git a/apis/authCommand/application/dtos/auth/update.user.dto.ts b/apis/authCommand/application/dtos/auth/update.user.dto.ts
new file mode 100644
index 0000000..fe6a705
--- /dev/null
+++ b/apis/authCommand/application/dtos/auth/update.user.dto.ts
@@ -0,0 +1,8 @@
+export interface UpdateUserDTO {
+  id: string;
+  email?: string;
+  firstName?: string;
+  lastName?: string;
+  phone?: string; 
+  token: string;
+}
\ No newline at end of file
diff --git a/apis/authCommand/application/ports/user.repository.interface.ts b/apis/authCommand/application/ports/user.repository.interface.ts
index acad1ac..b8c956b 100644
--- a/apis/authCommand/application/ports/user.repository.interface.ts
+++ b/apis/authCommand/application/ports/user.repository.interface.ts
@@ -3,5 +3,10 @@ import { User } from '../../domain/entities';
 export interface UserRepositoryInterface {
   
   findByEmail(email: string): Promise<User | null>;
-  create(user: User): Promise<void>;
+  findById(id: string): Promise<User | null>;
+  create(user: User): Promise<User | null>;
+  update(user: User): Promise<User | null>;
+  updateRole(id: string, role: string): Promise<User | null>;
+  updatePassword(id: string, password: string): Promise<User | null>;
+  delete(id: string): Promise<void>;
 }
diff --git a/apis/authCommand/application/usecases/auth/change.password.usecase.ts b/apis/authCommand/application/usecases/auth/change.password.usecase.ts
new file mode 100644
index 0000000..5483e11
--- /dev/null
+++ b/apis/authCommand/application/usecases/auth/change.password.usecase.ts
@@ -0,0 +1,32 @@
+import { NotFoundError } from "../../errors";
+import { AuthServiceInterface, UserRepositoryInterface } from "../../ports";
+import { ChangePasswordUserDTO } from "../../dtos/auth";
+import { Role } from "../../../domain/enums";
+
+export class ChangePasswordUseCase {
+    private userRepository: UserRepositoryInterface;
+    private authService: AuthServiceInterface;
+
+    constructor(userRepository: UserRepositoryInterface, authService: AuthServiceInterface) {
+        this.userRepository = userRepository;
+        this.authService = authService;
+    }
+    async execute(dto: ChangePasswordUserDTO): Promise<void | Error> {
+        if (!dto.userId || !dto.password || !dto.token) {
+            throw new Error("L'identifiant de l'utilisateur et le mot de passe sont requis");
+        }
+        const token = this.authService.verifyToken(dto.token);
+        if (!token) {
+            throw new Error("Invalid token");
+        }
+        if (token.id !== dto.userId || token.role !== Role.ADMIN) {
+            throw new Error("Permission denied");
+        }
+        const user = await this.userRepository.findById(dto.userId);
+        if (!user) {
+            throw new NotFoundError();
+        }
+        user.password = dto.password;
+        await this.userRepository.updatePassword(dto.userId, dto.password);
+    }
+}
\ No newline at end of file
diff --git a/apis/authCommand/application/usecases/auth/change.role.usecase.ts b/apis/authCommand/application/usecases/auth/change.role.usecase.ts
new file mode 100644
index 0000000..3efbe80
--- /dev/null
+++ b/apis/authCommand/application/usecases/auth/change.role.usecase.ts
@@ -0,0 +1,37 @@
+import { NotFoundError } from "../../errors";
+import { AuthServiceInterface, UserRepositoryInterface } from "../../ports";
+import { ChangeRoleUserDTO } from "../../dtos/auth";
+import { Role } from "../../../domain/enums";
+
+export class ChangeRoleUseCase {
+  private userRepository: UserRepositoryInterface;
+  private authService: AuthServiceInterface;
+
+  constructor(userRepository: UserRepositoryInterface, authService: AuthServiceInterface) {
+    this.userRepository = userRepository;
+    this.authService = authService;
+  }
+
+  async execute(dto: ChangeRoleUserDTO): Promise<void | Error> {
+    if (!dto.userId || !dto.role || !dto.token) {
+      throw new Error("L'identifiant de l'utilisateur et le rôle sont requis");
+    }
+
+    const token = this.authService.verifyToken(dto.token);
+    if (!token) {
+      throw new Error("Invalid token");
+    }
+
+    if (token.role !== Role.ADMIN) {
+      throw new Error("Permission denied");
+    }
+
+    const user = await this.userRepository.findById(dto.userId);
+    if (!user) {
+      throw new NotFoundError();
+    }
+
+    user.role = dto.role;
+    await this.userRepository.update(user);
+  }
+}
\ No newline at end of file
diff --git a/apis/authCommand/application/usecases/auth/delete.usecase.ts b/apis/authCommand/application/usecases/auth/delete.usecase.ts
new file mode 100644
index 0000000..567785d
--- /dev/null
+++ b/apis/authCommand/application/usecases/auth/delete.usecase.ts
@@ -0,0 +1,31 @@
+import { AuthServiceInterface, UserRepositoryInterface } from "../../ports";
+
+
+export class DeleteUseCase {
+
+  private userRepository: UserRepositoryInterface;
+  private authService: AuthServiceInterface;
+
+  constructor(userRepository: UserRepositoryInterface, authService: AuthServiceInterface) {
+    this.userRepository = userRepository;
+    this.authService = authService;
+  }
+
+  async execute(id: string): Promise<void | Error> {
+    if (!id) {
+      throw new Error("Id is required");
+    }
+
+    const isTokenValid = this.authService.verifyToken(id);
+    if (!isTokenValid) {
+      throw new Error("Invalid token");
+    }
+
+    const user = await this.userRepository.findById(id);
+    if (!user) {
+      throw new Error("User not found");
+    }
+
+    await this.userRepository.delete(id);
+  }
+}
\ No newline at end of file
diff --git a/apis/authCommand/application/usecases/auth/index.ts b/apis/authCommand/application/usecases/auth/index.ts
new file mode 100644
index 0000000..5df8a26
--- /dev/null
+++ b/apis/authCommand/application/usecases/auth/index.ts
@@ -0,0 +1,4 @@
+export * from './change.role.usecase';
+export * from './delete.usecase';
+export * from './register.usecase';
+export * from './update.usecase';
\ No newline at end of file
diff --git a/apis/authCommand/application/usecases/auth/register.usecase.ts b/apis/authCommand/application/usecases/auth/register.usecase.ts
index c1054b2..dfe74ac 100644
--- a/apis/authCommand/application/usecases/auth/register.usecase.ts
+++ b/apis/authCommand/application/usecases/auth/register.usecase.ts
@@ -14,7 +14,7 @@ export class RegisterUseCase {
     this.authService = authService;
   }
 
-  async execute(dto: RegisterUserDTO): Promise<string> {
+  async execute(dto: RegisterUserDTO): Promise<string | Error> {
     // Fail Fast: Vérifie si les données d’entrée sont valides
     if (!dto.email || !dto.password) {
       throw new Error("Email et mot de passe sont requis");
diff --git a/apis/authCommand/application/usecases/auth/update.usecase.ts b/apis/authCommand/application/usecases/auth/update.usecase.ts
new file mode 100644
index 0000000..05bce10
--- /dev/null
+++ b/apis/authCommand/application/usecases/auth/update.usecase.ts
@@ -0,0 +1,49 @@
+import { AuthServiceInterface, UserRepositoryInterface } from "../../ports";
+import { UpdateUserDTO } from "../../dtos/auth";
+
+export class UpdateUseCase {
+  private userRepository: UserRepositoryInterface;
+  private authService: AuthServiceInterface;
+
+  constructor(userRepository: UserRepositoryInterface, authService: AuthServiceInterface) {
+    this.userRepository = userRepository;
+    this.authService = authService;
+  }
+
+  async execute(dto: UpdateUserDTO): Promise<void> {
+    if (!dto.id || !dto.token) {
+      throw new Error("Id is required");
+    }
+
+    const token = this.authService.verifyToken(dto.token);
+    if (!token) {
+      throw new Error("Invalid token");
+    }
+    if (token.id !== dto.id) {
+      throw new Error("Invalid token");
+    }
+
+    const user = await this.userRepository.findById(dto.id);
+    if (!user) {
+      throw new Error("User not found");
+    }
+
+    if (dto.email) {
+      user.email = dto.email;
+    }
+
+    if (dto.firstName) {
+      user.firstName = dto.firstName;
+    }
+
+    if (dto.lastName) {
+      user.lastName = dto.lastName;
+    }
+
+    if (dto.phone) {
+      user.phone = dto.phone;
+    }
+
+    await this.userRepository.update(user);
+  }
+}
\ No newline at end of file
diff --git a/apis/authCommand/shared/helpers/token.helper.ts b/apis/authCommand/shared/helpers/token.helper.ts
index 30d21a1..1ef8a9c 100644
--- a/apis/authCommand/shared/helpers/token.helper.ts
+++ b/apis/authCommand/shared/helpers/token.helper.ts
@@ -17,7 +17,7 @@ export class TokenHelper implements AuthServiceInterface {
   }
 
   generateToken(user: User): string {
-    return sign({email: user.email, role: user.role}, this.secret, { expiresIn: '1h' });
+    return sign({id: user.id, email: user.email, role: user.role}, this.secret, { expiresIn: '1h' });
   }
 
   verifyToken(token: string): any {