AuthKit

The ultimate starting point for secure Spring Boot apps with JWT and RBAC.

Get Source Code on GitHub

Introduction

Skip the repetitive Spring Security setup. AuthKit is a production-ready JWT authentication starter kit for Spring Boot, featuring refresh tokens, role-based authorization, and a clean, extensible architecture.

Add secure authentication to your Spring Boot project in minutes instead of rebuilding the same security infrastructure every time.

Who is this for?

  • • SaaS builders and indie hackers
  • • Backend developers using Spring Boot
  • • Anyone tired of setting up auth repeatedly

Why Use This Authentication Starter

Save Development Time

No need to rebuild JWT authentication from scratch for every new project.

Secure by Default

Includes BCrypt hashing, JWT best practices, and secure token handling logic.

Clean Architecture

Controllers, services, repositories, and DTOs are professionally organized.

Plug-and-Play Template

Clone the project, configure your environment, and start building features immediately.

Why not build it yourself?

Without AuthKit

  • ❌ 8-10 hours setup
  • ❌ Repetitive boilerplate
  • ❌ Security mistakes risk

With AuthKit

  • ✅ 10 min setup
  • ✅ Clean structure
  • ✅ Best practices built-in

Key Features

  • JWT Authentication & Refresh Tokens

    Secure login with short-lived access tokens and persistent refresh support.

  • User & Role Management

    Complete signup, login, and user profile management endpoints.

  • Password Hashing

    Industry-standard BCrypt hashing configured out of the box.

  • Role-Based Authorization

    Granular access control support for different user levels.

  • Spring Security 6

    Uses the latest Spring Security configuration style and best practices.

Project Structure

src/main/java/com/authkit/
├── config/        # App configurations
├── controllers/   # REST API endpoints
├── dtos/          # Data Transfer Objects
├── entities/      # Database models
├── exceptions/    # Global error handling
├── repositories/  # Database access
├── security/      # Spring Security & JWT logic
└── services/      # Business logic

Quick Start

Step 1

Clone the project from GitHub repository.

Step 2

Open the project in your IDE (IntelliJ, Eclipse, or VS Code).

Step 3

Configure database and JWT properties in application.properties.

Step 4

Run as spring boot app. It will start with port 8080.

API Endpoints

Authentication
POST /api/auth/register

Register a new user account.

POST /api/auth/login

Authenticate user and receive access + refresh tokens.

POST /api/auth/refresh

Generate a new access token using a valid refresh token.

POST /api/auth/logout

Invalidate refresh token and logout user.

User
GET /api/users/me

Quick check of authenticated user (username + roles).

GET /api/users/profile

Get full user profile (authenticated users only).

GET /api/users/all

Retrieve all users (admin only).

GET /api/users/restricted

Access resource with additional business-rule validation.

GET /api/users/admin-only

Admin-only test endpoint.

Ready to Secure Your App?

Download AuthKit for free and get a production-ready authentication system running in minutes.

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