diff --git a/api/package.json b/api/package.json
index 8013a477..5accf928 100644
--- a/api/package.json
+++ b/api/package.json
@@ -25,6 +25,7 @@
     "@nestjs/passport": "^10.0.3",
     "@nestjs/platform-express": "^10.0.0",
     "@nestjs/typeorm": "^10.0.2",
+    "@ts-rest/nest": "^3.51.0",
     "bcrypt": "catalog:",
     "class-transformer": "catalog:",
     "lodash": "^4.17.21",
diff --git a/api/src/modules/auth/authentication/authentication.controller.ts b/api/src/modules/auth/authentication/authentication.controller.ts
index f8b3f103..eeb014fd 100644
--- a/api/src/modules/auth/authentication/authentication.controller.ts
+++ b/api/src/modules/auth/authentication/authentication.controller.ts
@@ -1,34 +1,46 @@
-import { Body, Controller, Post, UseGuards, Headers } from '@nestjs/common';
+import {
+  Body,
+  Controller,
+  Post,
+  UseGuards,
+  Headers,
+  UseInterceptors,
+  ClassSerializerInterceptor,
+} from '@nestjs/common';
 import { User } from '@shared/entities/users/user.entity';
 import { AuthenticationService } from '@api/modules/auth/authentication/authentication.service';
-import { LoginDto } from '@api/modules/auth/dtos/login.dto';
 import { LocalAuthGuard } from '@api/modules/auth/guards/local-auth.guard';
 import { GetUser } from '@api/modules/auth/decorators/get-user.decorator';
 import { Public } from '@api/modules/auth/decorators/is-public.decorator';
 import { PasswordRecoveryService } from '@api/modules/auth/services/password-recovery.service';
+import { authContract } from '@shared/contracts/auth/auth.contract';
+import { tsRestHandler, TsRestHandler } from '@ts-rest/nest';
+import { ControllerResponse } from '@api/types/controller-response.type';
 
-@Controller('authentication')
+@Controller()
+@UseInterceptors(ClassSerializerInterceptor)
 export class AuthenticationController {
   constructor(
     private authService: AuthenticationService,
     private readonly passwordRecovery: PasswordRecoveryService,
   ) {}
 
-  @Public()
-  @Post('signup')
-  async signup(@Body() signupDto: LoginDto) {
-    return this.authService.signUp(signupDto);
-  }
-
   @Public()
   @UseGuards(LocalAuthGuard)
-  @Post('login')
-  async login(@GetUser() user: User) {
-    return this.authService.logIn(user);
+  @TsRestHandler(authContract.login)
+  async login(@GetUser() user: User): Promise<ControllerResponse> {
+    return tsRestHandler(authContract.login, async () => {
+      const userWithAccessToken = await this.authService.logIn(user);
+      return {
+        body: userWithAccessToken,
+        status: 201,
+      };
+    });
   }
 
+  // TODO: Wrap this in a ts-rest handler
   @Public()
-  @Post('recover-password')
+  @Post('authentication/recover-password')
   async recoverPassword(
     @Headers('origin') origin: string,
     @Body() body: { email: string },
diff --git a/api/src/modules/auth/authentication/authentication.service.ts b/api/src/modules/auth/authentication/authentication.service.ts
index 6392a865..1b66103d 100644
--- a/api/src/modules/auth/authentication/authentication.service.ts
+++ b/api/src/modules/auth/authentication/authentication.service.ts
@@ -7,6 +7,7 @@ import { LoginDto } from '@api/modules/auth/dtos/login.dto';
 import { JwtPayload } from '@api/modules/auth/strategies/jwt.strategy';
 import { EventBus } from '@nestjs/cqrs';
 import { UserSignedUpEvent } from '@api/modules/events/user-events/user-signed-up.event';
+import { UserWithAccessToken } from '@shared/dtos/user.dto';
 
 @Injectable()
 export class AuthenticationService {
@@ -32,7 +33,7 @@ export class AuthenticationService {
     this.eventBus.publish(new UserSignedUpEvent(newUser.id, newUser.email));
   }
 
-  async logIn(user: User): Promise<{ user: User; accessToken: string }> {
+  async logIn(user: User): Promise<UserWithAccessToken> {
     const payload: JwtPayload = { id: user.id };
     const accessToken: string = this.jwt.sign(payload);
     return { user, accessToken };
diff --git a/api/src/types/controller-response.type.ts b/api/src/types/controller-response.type.ts
new file mode 100644
index 00000000..f512f24d
--- /dev/null
+++ b/api/src/types/controller-response.type.ts
@@ -0,0 +1,5 @@
+/**
+ * Due to the inability to import TsRest return type, we need to esxplixitly define the return type of the route handler
+ */
+
+export type ControllerResponse = unknown;
diff --git a/api/test/e2e/features/sign-up.feature b/api/test/e2e/features/sign-up.feature
deleted file mode 100644
index 6743e93d..00000000
--- a/api/test/e2e/features/sign-up.feature
+++ /dev/null
@@ -1,12 +0,0 @@
-Feature: User Sign Up
-
-  Scenario: A user cannot sign up with an already registered email
-    Given a user exists with valid credentials
-    When the user attempts to sign up with the same email
-    Then the user should receive a 409 status code
-    And the response message should be "Email already exists"
-
-  Scenario: A user successfully signs up with a new email
-    When a user attempts to sign up with valid credentials
-    Then the user should be registered successfully
-    And the user should have a valid ID and email
diff --git a/api/test/e2e/steps/sign-up.steps.ts b/api/test/e2e/steps/sign-up.steps.ts
deleted file mode 100644
index b125d7ce..00000000
--- a/api/test/e2e/steps/sign-up.steps.ts
+++ /dev/null
@@ -1,94 +0,0 @@
-import { defineFeature, loadFeature } from 'jest-cucumber';
-import { Response } from 'supertest';
-import { User } from '@shared/entities/users/user.entity';
-import { TestManager } from 'api/test/utils/test-manager';
-
-const feature = loadFeature('./test/e2e/features/sign-up.feature');
-
-defineFeature(feature, (test) => {
-  let testManager: TestManager;
-
-  beforeAll(async () => {
-    testManager = await TestManager.createTestManager();
-  });
-
-  beforeEach(async () => {
-    await testManager.clearDatabase();
-  });
-
-  afterAll(async () => {
-    await testManager.close();
-  });
-
-  test('A user cannot sign up with an already registered email', ({
-    given,
-    when,
-    then,
-    and,
-  }) => {
-    let existingUser: User;
-    let response: Response;
-
-    given('a user exists with valid credentials', async () => {
-      existingUser = await testManager.mocks().createUser({
-        email: 'existing@test.com',
-        password: 'password123',
-      });
-    });
-
-    when('the user attempts to sign up with the same email', async () => {
-      response = await testManager
-        .request()
-        .post('/authentication/signup')
-        .send({ email: existingUser.email, password: 'password123' });
-    });
-
-    then(
-      /the user should receive a (\d+) status code/,
-      async (statusCode: string) => {
-        expect(response.status).toBe(Number.parseInt(statusCode));
-      },
-    );
-
-    and('the response message should be "Email already exists"', async () => {
-      expect(response.body.message).toEqual(
-        `Email ${existingUser.email} already exists`,
-      );
-    });
-  });
-
-  test('A user successfully signs up with a new email', ({
-    when,
-    then,
-    and,
-  }) => {
-    let newUser: { email: string; password: string };
-    let createdUser: User;
-    let response: Response;
-
-    when('a user attempts to sign up with valid credentials', async () => {
-      newUser = { email: 'newuser@test.com', password: '12345678' };
-      response = await testManager
-        .request()
-        .post('/authentication/signup')
-        .send({
-          email: newUser.email,
-          password: newUser.password,
-        });
-    });
-
-    then('the user should be registered successfully', async () => {
-      expect(response.status).toBe(201);
-    });
-
-    and('the user should have a valid ID and email', async () => {
-      createdUser = await testManager
-        .getDataSource()
-        .getRepository(User)
-        .findOne({ where: { email: newUser.email } });
-
-      expect(createdUser.id).toBeDefined();
-      expect(createdUser.email).toEqual(newUser.email);
-    });
-  });
-});
diff --git a/client/lib/queryClient.ts b/client/lib/queryClient.ts
new file mode 100644
index 00000000..4dea80de
--- /dev/null
+++ b/client/lib/queryClient.ts
@@ -0,0 +1,10 @@
+import { router } from "@shared/contracts";
+import { initQueryClient } from "@ts-rest/react-query";
+
+// TODO: We need to get the baseUrl from the environment, pending to decide where to store this data. Right now the API
+//       is getting all the conf from the shared folder
+
+export const client = initQueryClient(router, {
+  validateResponse: true,
+  baseUrl: "localhost:4000",
+});
diff --git a/client/package.json b/client/package.json
index 5045e3e5..dba993e2 100644
--- a/client/package.json
+++ b/client/package.json
@@ -9,18 +9,19 @@
     "lint": "next lint"
   },
   "dependencies": {
+    "@ts-rest/react-query": "^3.51.0",
+    "next": "14.2.8",
     "react": "^18",
-    "react-dom": "^18",
-    "next": "14.2.8"
+    "react-dom": "^18"
   },
   "devDependencies": {
-    "typescript": "^5",
     "@types/node": "^20",
     "@types/react": "^18",
     "@types/react-dom": "^18",
+    "eslint": "^8",
+    "eslint-config-next": "14.2.8",
     "postcss": "^8",
     "tailwindcss": "^3.4.1",
-    "eslint": "^8",
-    "eslint-config-next": "14.2.8"
+    "typescript": "^5"
   }
 }
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 36cac8a8..da8c5325 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -12,15 +12,9 @@ catalogs:
     class-transformer:
       specifier: 0.5.1
       version: 0.5.1
-    pg:
-      specifier: 8.12.0
-      version: 8.12.0
     typeorm:
       specifier: 0.3.20
       version: 0.3.20
-    zod:
-      specifier: 3.23.8
-      version: 3.23.8
 
 importers:
 
@@ -55,6 +49,9 @@ importers:
       '@nestjs/typeorm':
         specifier: ^10.0.2
         version: 10.0.2(@nestjs/common@10.4.1(class-transformer@0.5.1)(reflect-metadata@0.2.2)(rxjs@7.8.1))(@nestjs/core@10.4.1(@nestjs/common@10.4.1(class-transformer@0.5.1)(reflect-metadata@0.2.2)(rxjs@7.8.1))(@nestjs/platform-express@10.4.1)(reflect-metadata@0.2.2)(rxjs@7.8.1))(reflect-metadata@0.2.2)(rxjs@7.8.1)(typeorm@0.3.20(pg@8.12.0)(ts-node@10.9.2(@types/node@20.16.5)(typescript@5.5.4)))
+      '@ts-rest/nest':
+        specifier: ^3.51.0
+        version: 3.51.0(@nestjs/common@10.4.1(class-transformer@0.5.1)(reflect-metadata@0.2.2)(rxjs@7.8.1))(@nestjs/core@10.4.1(@nestjs/common@10.4.1(class-transformer@0.5.1)(reflect-metadata@0.2.2)(rxjs@7.8.1))(@nestjs/platform-express@10.4.1)(reflect-metadata@0.2.2)(rxjs@7.8.1))(@ts-rest/core@3.51.0(@types/node@20.16.5)(zod@3.23.8))(rxjs@7.8.1)(zod@3.23.8)
       bcrypt:
         specifier: 'catalog:'
         version: 5.1.1
@@ -173,6 +170,9 @@ importers:
 
   client:
     dependencies:
+      '@ts-rest/react-query':
+        specifier: ^3.51.0
+        version: 3.51.0(@tanstack/react-query@5.56.2(react@18.3.1))(@ts-rest/core@3.51.0(@types/node@20.16.5)(zod@3.23.8))(react@18.3.1)(zod@3.23.8)
       next:
         specifier: 14.2.8
         version: 14.2.8(react-dom@18.3.1(react@18.3.1))(react@18.3.1)
@@ -210,6 +210,12 @@ importers:
 
   shared:
     dependencies:
+      '@nestjs/mapped-types':
+        specifier: ^2.0.5
+        version: 2.0.5(@nestjs/common@10.4.1(class-transformer@0.5.1)(reflect-metadata@0.2.2)(rxjs@7.8.1))(class-transformer@0.5.1)(reflect-metadata@0.2.2)
+      '@ts-rest/core':
+        specifier: ^3.51.0
+        version: 3.51.0(@types/node@20.16.5)(zod@3.23.8)
       class-transformer:
         specifier: 'catalog:'
         version: 0.5.1
@@ -759,6 +765,19 @@ packages:
     peerDependencies:
       '@nestjs/common': ^8.0.0 || ^9.0.0 || ^10.0.0
 
+  '@nestjs/mapped-types@2.0.5':
+    resolution: {integrity: sha512-bSJv4pd6EY99NX9CjBIyn4TVDoSit82DUZlL4I3bqNfy5Gt+gXTa86i3I/i0iIV9P4hntcGM5GyO+FhZAhxtyg==}
+    peerDependencies:
+      '@nestjs/common': ^8.0.0 || ^9.0.0 || ^10.0.0
+      class-transformer: ^0.4.0 || ^0.5.0
+      class-validator: ^0.13.0 || ^0.14.0
+      reflect-metadata: ^0.1.12 || ^0.2.0
+    peerDependenciesMeta:
+      class-transformer:
+        optional: true
+      class-validator:
+        optional: true
+
   '@nestjs/passport@10.0.3':
     resolution: {integrity: sha512-znJ9Y4S8ZDVY+j4doWAJ8EuuVO7SkQN3yOBmzxbGaXbvcSwFDAdGJ+OMCg52NdzIO4tQoN4pYKx8W6M0ArfFRQ==}
     peerDependencies:
@@ -1079,6 +1098,48 @@ packages:
   '@swc/helpers@0.5.5':
     resolution: {integrity: sha512-KGYxvIOXcceOAbEk4bi/dVLEK9z8sZ0uBB3Il5b1rhfClSpcX0yfRO0KmTkqR2cnQDymwLB+25ZyMzICg/cm/A==}
 
+  '@tanstack/query-core@5.56.2':
+    resolution: {integrity: sha512-gor0RI3/R5rVV3gXfddh1MM+hgl0Z4G7tj6Xxpq6p2I03NGPaJ8dITY9Gz05zYYb/EJq9vPas/T4wn9EaDPd4Q==}
+
+  '@tanstack/react-query@5.56.2':
+    resolution: {integrity: sha512-SR0GzHVo6yzhN72pnRhkEFRAHMsUo5ZPzAxfTMvUxFIDVS6W9LYUp6nXW3fcHVdg0ZJl8opSH85jqahvm6DSVg==}
+    peerDependencies:
+      react: ^18 || ^19
+
+  '@ts-rest/core@3.51.0':
+    resolution: {integrity: sha512-v6lnWEcpZj1UgN9wb84XQ+EORP1QEtncFumoXMJjno5ZUV6vdjKze3MYcQN0C6vjBpIJPQEaI/gab2jr4/0KzQ==}
+    peerDependencies:
+      '@types/node': ^18.18.7 || >=20.8.4
+      zod: ^3.22.3
+    peerDependenciesMeta:
+      '@types/node':
+        optional: true
+      zod:
+        optional: true
+
+  '@ts-rest/nest@3.51.0':
+    resolution: {integrity: sha512-TYroMQZveatVoOWGNiSgUYt8T+4oWRxwAdt17FZGl6KcY3/83/B1jgwg72ZxMrQigmKBYvhQXlLcw1ASoQrCbw==}
+    peerDependencies:
+      '@nestjs/common': ^9.0.0 || ^10.0.0
+      '@nestjs/core': ^9.0.0 || ^10.0.0
+      '@ts-rest/core': ~3.51.0
+      rxjs: ^7.1.0
+      zod: ^3.22.3
+    peerDependenciesMeta:
+      zod:
+        optional: true
+
+  '@ts-rest/react-query@3.51.0':
+    resolution: {integrity: sha512-pWrbyRqvcvmjvm+ORu3zE3sPFqsS6CHOq5vra/UtyLEgXrcnEA+fu/7d9tj/+BLRwe0kOWvalu2S3/d3SDxvFQ==}
+    peerDependencies:
+      '@tanstack/react-query': ^4.0.0 || ^5.0.0
+      '@ts-rest/core': ~3.51.0
+      react: ^16.8.0 || ^17.0.0 || ^18.0.0
+      zod: ^3.22.3
+    peerDependenciesMeta:
+      zod:
+        optional: true
+
   '@tsconfig/node10@1.0.11':
     resolution: {integrity: sha512-DcRjDCujK/kCk/cUe8Xz8ZSpm8mS3mNNpta+jGCA6USEDfktlNvm1+IuZ9eTcDbNk41BHwpHHeW+N1lKCz4zOw==}
 
@@ -5400,6 +5461,13 @@ snapshots:
       '@types/jsonwebtoken': 9.0.5
       jsonwebtoken: 9.0.2
 
+  '@nestjs/mapped-types@2.0.5(@nestjs/common@10.4.1(class-transformer@0.5.1)(reflect-metadata@0.2.2)(rxjs@7.8.1))(class-transformer@0.5.1)(reflect-metadata@0.2.2)':
+    dependencies:
+      '@nestjs/common': 10.4.1(class-transformer@0.5.1)(reflect-metadata@0.2.2)(rxjs@7.8.1)
+      reflect-metadata: 0.2.2
+    optionalDependencies:
+      class-transformer: 0.5.1
+
   '@nestjs/passport@10.0.3(@nestjs/common@10.4.1(class-transformer@0.5.1)(reflect-metadata@0.2.2)(rxjs@7.8.1))(passport@0.7.0)':
     dependencies:
       '@nestjs/common': 10.4.1(class-transformer@0.5.1)(reflect-metadata@0.2.2)(rxjs@7.8.1)
@@ -5812,6 +5880,35 @@ snapshots:
       '@swc/counter': 0.1.3
       tslib: 2.7.0
 
+  '@tanstack/query-core@5.56.2': {}
+
+  '@tanstack/react-query@5.56.2(react@18.3.1)':
+    dependencies:
+      '@tanstack/query-core': 5.56.2
+      react: 18.3.1
+
+  '@ts-rest/core@3.51.0(@types/node@20.16.5)(zod@3.23.8)':
+    optionalDependencies:
+      '@types/node': 20.16.5
+      zod: 3.23.8
+
+  '@ts-rest/nest@3.51.0(@nestjs/common@10.4.1(class-transformer@0.5.1)(reflect-metadata@0.2.2)(rxjs@7.8.1))(@nestjs/core@10.4.1(@nestjs/common@10.4.1(class-transformer@0.5.1)(reflect-metadata@0.2.2)(rxjs@7.8.1))(@nestjs/platform-express@10.4.1)(reflect-metadata@0.2.2)(rxjs@7.8.1))(@ts-rest/core@3.51.0(@types/node@20.16.5)(zod@3.23.8))(rxjs@7.8.1)(zod@3.23.8)':
+    dependencies:
+      '@nestjs/common': 10.4.1(class-transformer@0.5.1)(reflect-metadata@0.2.2)(rxjs@7.8.1)
+      '@nestjs/core': 10.4.1(@nestjs/common@10.4.1(class-transformer@0.5.1)(reflect-metadata@0.2.2)(rxjs@7.8.1))(@nestjs/platform-express@10.4.1)(reflect-metadata@0.2.2)(rxjs@7.8.1)
+      '@ts-rest/core': 3.51.0(@types/node@20.16.5)(zod@3.23.8)
+      rxjs: 7.8.1
+    optionalDependencies:
+      zod: 3.23.8
+
+  '@ts-rest/react-query@3.51.0(@tanstack/react-query@5.56.2(react@18.3.1))(@ts-rest/core@3.51.0(@types/node@20.16.5)(zod@3.23.8))(react@18.3.1)(zod@3.23.8)':
+    dependencies:
+      '@tanstack/react-query': 5.56.2(react@18.3.1)
+      '@ts-rest/core': 3.51.0(@types/node@20.16.5)(zod@3.23.8)
+      react: 18.3.1
+    optionalDependencies:
+      zod: 3.23.8
+
   '@tsconfig/node10@1.0.11': {}
 
   '@tsconfig/node12@1.0.11': {}
@@ -6011,7 +6108,7 @@ snapshots:
       '@typescript-eslint/type-utils': 7.2.0(eslint@8.57.0)(typescript@5.5.4)
       '@typescript-eslint/utils': 7.2.0(eslint@8.57.0)(typescript@5.5.4)
       '@typescript-eslint/visitor-keys': 7.2.0
-      debug: 4.3.6
+      debug: 4.3.6(supports-color@8.1.1)
       eslint: 8.57.0
       graphemer: 1.4.0
       ignore: 5.3.2
@@ -6042,7 +6139,7 @@ snapshots:
       '@typescript-eslint/types': 7.2.0
       '@typescript-eslint/typescript-estree': 7.2.0(typescript@5.5.4)
       '@typescript-eslint/visitor-keys': 7.2.0
-      debug: 4.3.6
+      debug: 4.3.6(supports-color@8.1.1)
       eslint: 8.57.0
     optionalDependencies:
       typescript: 5.5.4
@@ -6075,7 +6172,7 @@ snapshots:
     dependencies:
       '@typescript-eslint/typescript-estree': 7.2.0(typescript@5.5.4)
       '@typescript-eslint/utils': 7.2.0(eslint@8.57.0)(typescript@5.5.4)
-      debug: 4.3.6
+      debug: 4.3.6(supports-color@8.1.1)
       eslint: 8.57.0
       ts-api-utils: 1.3.0(typescript@5.5.4)
     optionalDependencies:
@@ -6106,7 +6203,7 @@ snapshots:
     dependencies:
       '@typescript-eslint/types': 7.2.0
       '@typescript-eslint/visitor-keys': 7.2.0
-      debug: 4.3.6
+      debug: 4.3.6(supports-color@8.1.1)
       globby: 11.1.0
       is-glob: 4.0.3
       minimatch: 9.0.3
@@ -6804,6 +6901,12 @@ snapshots:
     dependencies:
       ms: 2.1.2
 
+  debug@4.3.6(supports-color@8.1.1):
+    dependencies:
+      ms: 2.1.2
+    optionalDependencies:
+      supports-color: 8.1.1
+
   dedent@1.5.3: {}
 
   deep-equal@2.2.3:
@@ -7043,8 +7146,8 @@ snapshots:
       '@typescript-eslint/parser': 7.2.0(eslint@8.57.0)(typescript@5.5.4)
       eslint: 8.57.0
       eslint-import-resolver-node: 0.3.9
-      eslint-import-resolver-typescript: 3.6.3(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-node@0.3.9)(eslint-plugin-import@2.30.0(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint@8.57.0))(eslint@8.57.0)
-      eslint-plugin-import: 2.30.0(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-typescript@3.6.3(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-node@0.3.9)(eslint-plugin-import@2.30.0(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint@8.57.0))(eslint@8.57.0))(eslint@8.57.0)
+      eslint-import-resolver-typescript: 3.6.3(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-node@0.3.9)(eslint-plugin-import@2.30.0)(eslint@8.57.0)
+      eslint-plugin-import: 2.30.0(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-typescript@3.6.3)(eslint@8.57.0)
       eslint-plugin-jsx-a11y: 6.10.0(eslint@8.57.0)
       eslint-plugin-react: 7.35.2(eslint@8.57.0)
       eslint-plugin-react-hooks: 4.6.2(eslint@8.57.0)
@@ -7067,37 +7170,37 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
-  eslint-import-resolver-typescript@3.6.3(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-node@0.3.9)(eslint-plugin-import@2.30.0(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint@8.57.0))(eslint@8.57.0):
+  eslint-import-resolver-typescript@3.6.3(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-node@0.3.9)(eslint-plugin-import@2.30.0)(eslint@8.57.0):
     dependencies:
       '@nolyfill/is-core-module': 1.0.39
-      debug: 4.3.6
+      debug: 4.3.6(supports-color@8.1.1)
       enhanced-resolve: 5.17.1
       eslint: 8.57.0
-      eslint-module-utils: 2.9.0(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-node@0.3.9)(eslint-import-resolver-typescript@3.6.3(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-node@0.3.9)(eslint-plugin-import@2.30.0(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint@8.57.0))(eslint@8.57.0))(eslint@8.57.0)
+      eslint-module-utils: 2.9.0(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-node@0.3.9)(eslint-import-resolver-typescript@3.6.3(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-node@0.3.9)(eslint-plugin-import@2.30.0)(eslint@8.57.0))(eslint@8.57.0)
       fast-glob: 3.3.2
       get-tsconfig: 4.8.0
       is-bun-module: 1.1.0
       is-glob: 4.0.3
     optionalDependencies:
-      eslint-plugin-import: 2.30.0(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-typescript@3.6.3(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-node@0.3.9)(eslint-plugin-import@2.30.0(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint@8.57.0))(eslint@8.57.0))(eslint@8.57.0)
+      eslint-plugin-import: 2.30.0(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-typescript@3.6.3)(eslint@8.57.0)
     transitivePeerDependencies:
       - '@typescript-eslint/parser'
       - eslint-import-resolver-node
       - eslint-import-resolver-webpack
       - supports-color
 
-  eslint-module-utils@2.9.0(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-node@0.3.9)(eslint-import-resolver-typescript@3.6.3(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-node@0.3.9)(eslint-plugin-import@2.30.0(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint@8.57.0))(eslint@8.57.0))(eslint@8.57.0):
+  eslint-module-utils@2.9.0(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-node@0.3.9)(eslint-import-resolver-typescript@3.6.3(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-node@0.3.9)(eslint-plugin-import@2.30.0)(eslint@8.57.0))(eslint@8.57.0):
     dependencies:
       debug: 3.2.7
     optionalDependencies:
       '@typescript-eslint/parser': 7.2.0(eslint@8.57.0)(typescript@5.5.4)
       eslint: 8.57.0
       eslint-import-resolver-node: 0.3.9
-      eslint-import-resolver-typescript: 3.6.3(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-node@0.3.9)(eslint-plugin-import@2.30.0(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint@8.57.0))(eslint@8.57.0)
+      eslint-import-resolver-typescript: 3.6.3(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-node@0.3.9)(eslint-plugin-import@2.30.0)(eslint@8.57.0)
     transitivePeerDependencies:
       - supports-color
 
-  eslint-plugin-import@2.30.0(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-typescript@3.6.3(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-node@0.3.9)(eslint-plugin-import@2.30.0(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint@8.57.0))(eslint@8.57.0))(eslint@8.57.0):
+  eslint-plugin-import@2.30.0(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-typescript@3.6.3)(eslint@8.57.0):
     dependencies:
       '@rtsao/scc': 1.1.0
       array-includes: 3.1.8
@@ -7108,7 +7211,7 @@ snapshots:
       doctrine: 2.1.0
       eslint: 8.57.0
       eslint-import-resolver-node: 0.3.9
-      eslint-module-utils: 2.9.0(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-node@0.3.9)(eslint-import-resolver-typescript@3.6.3(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-node@0.3.9)(eslint-plugin-import@2.30.0(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint@8.57.0))(eslint@8.57.0))(eslint@8.57.0)
+      eslint-module-utils: 2.9.0(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-node@0.3.9)(eslint-import-resolver-typescript@3.6.3(@typescript-eslint/parser@7.2.0(eslint@8.57.0)(typescript@5.5.4))(eslint-import-resolver-node@0.3.9)(eslint-plugin-import@2.30.0)(eslint@8.57.0))(eslint@8.57.0)
       hasown: 2.0.2
       is-core-module: 2.15.1
       is-glob: 4.0.3
diff --git a/shared/contracts/auth/auth.contract.ts b/shared/contracts/auth/auth.contract.ts
new file mode 100644
index 00000000..bf1ecc66
--- /dev/null
+++ b/shared/contracts/auth/auth.contract.ts
@@ -0,0 +1,19 @@
+import { initContract } from "@ts-rest/core";
+import { LogInSchema } from "@shared/schemas/auth/login.schema";
+import { UserWithAccessToken } from "@shared/dtos/user.dto";
+import { JSONAPIError } from "@shared/dtos/json-api.error";
+
+// TODO: This is a scaffold. We need to define types for responses, zod schemas for body and query param validation etc.
+
+const contract = initContract();
+export const authContract = contract.router({
+  login: {
+    method: "POST",
+    path: "/authentication/login",
+    responses: {
+      201: contract.type<UserWithAccessToken>(),
+      401: contract.type<JSONAPIError>(),
+    },
+    body: LogInSchema,
+  },
+});
diff --git a/shared/contracts/index.ts b/shared/contracts/index.ts
new file mode 100644
index 00000000..3f13f97d
--- /dev/null
+++ b/shared/contracts/index.ts
@@ -0,0 +1,8 @@
+import { initContract } from "@ts-rest/core";
+import { authContract } from "./auth/auth.contract";
+
+const contract = initContract();
+
+export const router = contract.router({
+  auth: authContract,
+});
diff --git a/shared/dtos/json-api.error.ts b/shared/dtos/json-api.error.ts
new file mode 100644
index 00000000..aa5fa802
--- /dev/null
+++ b/shared/dtos/json-api.error.ts
@@ -0,0 +1,23 @@
+export interface JSONAPIError {
+  errors: JSONAPIErrorOptions[];
+}
+
+export interface JSONAPIErrorOptions {
+  id?: string | undefined;
+  status?: string | undefined;
+  code?: string | undefined;
+  title: string;
+  detail?: string | undefined;
+  source?:
+    | {
+        pointer?: string | undefined;
+        parameter?: string | undefined;
+      }
+    | undefined;
+  links?:
+    | {
+        about?: string | undefined;
+      }
+    | undefined;
+  meta?: any;
+}
diff --git a/shared/dtos/user.dto.ts b/shared/dtos/user.dto.ts
new file mode 100644
index 00000000..c92b0fc1
--- /dev/null
+++ b/shared/dtos/user.dto.ts
@@ -0,0 +1,9 @@
+import { OmitType } from "@nestjs/mapped-types";
+import { User } from "@shared/entities/users/user.entity";
+
+export type UserWithAccessToken = {
+  user: UserDto;
+  accessToken: string;
+};
+
+export class UserDto extends OmitType(User, ["password"]) {}
diff --git a/shared/package.json b/shared/package.json
index be9a6248..06be4e40 100644
--- a/shared/package.json
+++ b/shared/package.json
@@ -7,6 +7,8 @@
     "zod": "catalog:"
   },
   "dependencies": {
+    "@nestjs/mapped-types": "^2.0.5",
+    "@ts-rest/core": "^3.51.0",
     "class-transformer": "catalog:"
   }
 }
diff --git a/shared/schemas/auth/login.schema.ts b/shared/schemas/auth/login.schema.ts
new file mode 100644
index 00000000..5f8d743c
--- /dev/null
+++ b/shared/schemas/auth/login.schema.ts
@@ -0,0 +1,17 @@
+import { z } from "zod";
+export const EmailSchema = z.object({
+  email: z
+    .string({ message: "Email is required" })
+    .min(1, "Email is required")
+    .email("Invalid email"),
+});
+
+export const PasswordSchema = z.object({
+  password: z
+    .string({ message: "Password is required" })
+    .min(1, "Password is required")
+    .min(8, "Password must be more than 8 characters")
+    .max(32, "Password must be less than 32 characters"),
+});
+
+export const LogInSchema = z.intersection(EmailSchema, PasswordSchema);