KT-MyPage/app/Http/Middleware/FromKintoneMiddleware.php

<?php

namespace App\Http\Middleware;

use Closure;
use Exception;
use Illuminate\Http\Request;
use Symfony\Component\HttpFoundation\Response;

class FromKintoneMiddleware
{
    /**
     * Handle an incoming request.
     *
     * @param  \Closure(\Illuminate\Http\Request): (\Symfony\Component\HttpFoundation\Response)  $next
     */
    public function handle(Request $request, Closure $next): Response
    {

        $currectToken = config('kintone.fromKintoneToken');

        if ($request['token'] !== $currectToken) {
            if ($request->wantsJson()) {
                return response()->json([
                    'RESULT' => "UNAUTHORIZED",
                ]);
            } else {
                abort(403);
            }
        }

        return $next($request);
    }
}