Laravel Swagger Integration: Step-by-Step Guide to Generate API Documentation

Introduction

Laravel Swagger Integration is one of the best ways to generate interactive API documentation for your Laravel applications.

When building REST APIs with Laravel, maintaining accurate and up-to-date documentation is essential for developers and API consumers.

Use Swagger (OpenAPI) with the L5-Swagger package to automatically generate and maintain your API documentation.

In this tutorial, Learn to integrate L5-Swagger with Laravel, configure authentication, document APIs, and generate Swagger UI.

Prerequisites

Before starting, make sure you have:

• Laravel project installed
• PHP 8.1 or higher
• Composer installed
• MySQL or another supported database
• Basic knowledge of Laravel APIs

Step 1: Install Packages for Laravel Swagger Integration

First, install the Swagger package along with JWT Authentication.

What these packages do

• darkaonline/l5-swagger generates OpenAPI documentation.
• tymon/jwt-auth enables JWT authentication for protected APIs.

Step 2: Configure JWT Authentication

Publish the JWT configuration file.

Laravel creates a new configuration file:

Next, generate the JWT secret key.

This command automatically updates your .env file with a JWT secret.

Step 3: Publish Laravel Swagger Configuration

Now publish the L5-Swagger configuration.

After publishing, Laravel creates:

This configuration file allows you to customize:

• Documentation URL
• Scan directories
• API information
• Security settings
• Swagger UI options

Step 4: Create the User Registration API

Create a controller if it doesn’t already exist.

Inside the controller, create a register() method.

Add Swagger annotations above the method.

The method should:

• Validate user input
• Create a new user
• Hash the password
• Return a success response

Once Swagger scans this annotation, the endpoint automatically appears in the documentation.

Step 5: Create Login Controller

Generate a login controller.

This controller will authenticate users and return a JWT token after successful login.

Step 6: Implement Login API

Document the login endpoint.

Inside the login method:

• Validate credentials
• Authenticate the user
• Generate a token
• Return the token in JSON format

Example response:

Step 7: Create Protected User Endpoint

Add another method to return authenticated user details.

This endpoint requires a valid Bearer Token.

When users authorize in Swagger UI, they can directly test this API.

Step 8: Register API Routes

Open:

Register your routes.

Note: Choose one authentication system (JWT or Sanctum) and configure your middleware consistently.

Step 9: Configure Swagger Information

Open your base controller or create a dedicated annotations file.

Add global API information.

This information appears at the top of Swagger UI.

Step 10: Generate Laravel Swagger Documentation

Generate the documentation by running:

The package scans your controllers for OpenAPI annotations and generates the API documentation automatically.

Step 11: View Swagger UI

Start your Laravel server.

Now open the following URL:

You will see an interactive Swagger dashboard containing:

• All API endpoints
• Request parameters
• Response schemas
• Authentication options
• “Try it out” feature

You can even test APIs directly from the browser without using Postman.

Testing Protected APIs

For authenticated routes:

1. Login using the /login endpoint.
2. Copy the returned Bearer Token.
3. Click the Authorize button in Swagger UI.
4. Enter:

5. Click Authorize.
6. You can now access protected endpoints directly from Swagger.

Common Commands

Install packages:

Publish Swagger config:

Publish JWT config:

Generate JWT secret:

Generate Swagger documentation:

Run the application:

Conclusion

Integrating Swagger into Laravel makes API documentation simple, interactive, and always up to date.

L5-Swagger documents API endpoints using OpenAPI annotations. It also generates interactive API docs and lets you test APIs from Swagger UI.

This approach reduces manual documentation effort and improves collaboration across development teams.

Also you can hire laravel developers to customize this feature for your business needs.
Kindly explore our extensions.