diff --git a/src/app/Domain/Auth/Auth.ts b/src/app/Domain/Auth/Auth.ts
index b7a9f76..97ca10d 100644
--- a/src/app/Domain/Auth/Auth.ts
+++ b/src/app/Domain/Auth/Auth.ts
@@ -1,9 +1,9 @@
 export type Session = {
   username: string
   credential?: {
-    token: string,
-    refresh: string,
-    expiresAt: number | string | undefined,
+    token: string
+    refresh: string
+    expiresAt: number | string | undefined
     type: string
   }
   abilities?: string[]
diff --git a/src/app/Domain/Contracts.ts b/src/app/Domain/Contracts.ts
index 8a943b7..ced6fbd 100644
--- a/src/app/Domain/Contracts.ts
+++ b/src/app/Domain/Contracts.ts
@@ -6,8 +6,8 @@ export enum Status {
 
 export interface Content {
   status: Status
-  data?: Data
+  data?: Data | string | null
   message?: string
 }
 
-export type Data = Record<string, unknown> | string | null
+export type Data = { [property: string]: Data | unknown }
diff --git a/src/app/Infrastructure/Backend/HttpAuthRepository.ts b/src/app/Infrastructure/Backend/HttpAuthRepository.ts
index 418fd79..f345b53 100644
--- a/src/app/Infrastructure/Backend/HttpAuthRepository.ts
+++ b/src/app/Infrastructure/Backend/HttpAuthRepository.ts
@@ -1,7 +1,8 @@
 import AuthRepository from '../../Domain/Auth/AuthRepository.ts'
-import { Content } from '../../Domain/Contracts.ts'
+import { Data, Status } from '../../Domain/Contracts.ts'
 import { HttpClientDriverContract } from '../Http/Contracts.ts'
 import HttpClientFactory from '../Http/HttpClientFactory.ts'
+import { Session } from '../../Domain/Auth/Auth.ts'
 
 export default class HttpAuthRepository implements AuthRepository {
   private http: HttpClientDriverContract
@@ -14,15 +15,54 @@ export default class HttpAuthRepository implements AuthRepository {
     return new this(new HttpClientFactory())
   }
 
-  async signInWithOtp (email: string): Promise<Content> {
-    return this.http.post('auth/otp', { email })
+  async signInWithOtp (email: string): Promise<Session> {
+    const response = await this.http.post('/auth/otp', { email })
+    if (response.status !== Status.success) {
+      throw new Error(response.message)
+    }
+    const data = response.data as Data
+    const user = data.user as Data
+    return {
+      username: user?.username as string,
+      abilities: []
+    }
   }
 
-  async signIn (email: string, password: string): Promise<Content> {
-    return this.http.post('auth/signin', { email, password })
+  async signIn (email: string, password: string): Promise<Session> {
+    const response = await this.http.post('/auth/sign-in', { email, password })
+    if (response.status !== Status.success) {
+      throw new Error(response.message)
+    }
+    const data = response.data as Data
+    const user = data.user as Data
+    const credential = data.token as Data
+    return {
+      username: user?.username as string,
+      credential: {
+        token: credential?.token as string,
+        refresh: credential?.refresh as string,
+        expiresAt: credential?.expiresAt as string,
+        type: credential?.type as string,
+      },
+      abilities: []
+    }
   }
 
-  async signOut (): Promise<Content> {
-    return this.http.post('auth/signout')
+  async signOut (): Promise<boolean> {
+    const { status } = await this.http.post('/auth/sign-out')
+    return status === Status.success
+  }
+
+  async restore (): Promise<Session> {
+    const response = await this.http.get('/auth/me')
+    if (response.status !== Status.success) {
+      throw new Error(response.message)
+    }
+    const data = response.data as Data
+    const user = data.user as Data
+    return {
+      username: user?.username as string,
+      abilities: []
+    }
   }
 }
diff --git a/src/app/Infrastructure/Http/HttpClient.ts b/src/app/Infrastructure/Http/HttpClient.ts
index 7ad8d50..e1d6916 100644
--- a/src/app/Infrastructure/Http/HttpClient.ts
+++ b/src/app/Infrastructure/Http/HttpClient.ts
@@ -77,7 +77,7 @@ export default class HttpClient implements HttpClientContract {
     return headers
   }
 
-  protected configureBody (data: Data | null): Data | null {
+  protected configureBody (data: Data | null): unknown {
     return data
   }
 }
diff --git a/src/app/Infrastructure/Http/JsonHttpClient.ts b/src/app/Infrastructure/Http/JsonHttpClient.ts
index cd154e9..35077ca 100644
--- a/src/app/Infrastructure/Http/JsonHttpClient.ts
+++ b/src/app/Infrastructure/Http/JsonHttpClient.ts
@@ -20,7 +20,7 @@ export default class JsonHttpClient extends HttpClient {
     return headers
   }
 
-  protected configureBody (data: Data | null): Data | null {
+  protected configureBody (data: Data | null): unknown {
     return JSON.stringify(data)
   }
 }