Create Custom Route File in Laravel

Step-1: Create a Routes file name routes/vendors-api.php in the routes directory. Define your routes let suppose in my case I have some routes with prefix vendors in “vendors-api.php”

<?php


/*
vendors-api.php
|--------------------------------------------------------------------------
| Vendors API Routes
|--------------------------------------------------------------------------
|
|  Here is where you can register API routes for your application. These
| routes are loaded by the RouteServiceProvider and all of them will
| be assigned to the "vendors" middleware group. Make something great!
|
*/


Route::get('/', function () {
    dd('Welcome to vendors api routes.');
});

Step-2: Open the “app/Providers/RouteServiceProvider.php” and add the following code in “public function boot()”.

<?php

namespace App\Providers;

use Illuminate\Cache\RateLimiting\Limit;
use Illuminate\Foundation\Support\Providers\RouteServiceProvider as ServiceProvider;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\RateLimiter;
use Illuminate\Support\Facades\Route;

class RouteServiceProvider extends ServiceProvider
{
    /**
     * The path to your application's "home" route.
     *
     * Typically, users are redirected here after authentication.
     *
     * @var string
     */
    public const HOME = '/dashboard';

    /**
     * Define your route model bindings, pattern filters, and other route configuration.
     */
    public function boot(): void
    {
        RateLimiter::for('api', function (Request $request) {
            return Limit::perMinute(60)->by($request->user()?->id ?: $request->ip());
        });

        $this->routes(function () {
            Route::middleware('api')
                ->prefix('api/users')
                ->group(base_path('routes/api.php'));

            Route::middleware('web')
                ->group(base_path('routes/web.php'));

            Route::middleware('api')
                ->prefix('api/vendors')
                ->group(base_path('routes/vendors-api.php'));
        });
    }
}

Now check the api/vendors routes by simply calling

http://127.0.0.1:8000/api/vendors

I hope it can help you.