Force http requests and responses as json output. When making requests to an endpoint, there is no need to add the Content-Type and Accept application/json headers anymore.

AsJson.php

<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Request;
use Illuminate\Auth\Middleware\Authenticate as Middleware;

class AsJson extends Middleware
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle(Request $request, Closure $next)
    {
        $request->headers->set('Accept', 'application/json');
        $request->headers->set('Content-Type', 'application/json');

        return $next($request);
    }
}

You can use this middleware by setting it in the middleware method;

<?php

use App\Http\Middleware\AsJson;

Route::middleware([AsJson::class])->get('/users');