How to call a laravel api route from web route using sail?

My Laravel App runs in sail on port 8000. I build a simple api route, that I can successfully call using postman: POST http://localhost:8000/api/auth/token:

Route::post('/api/auth/token', function () {
    return [
        'success' => true,
        'auth_token' => bin2hex(random_bytes(16)),
    ];
});

When I try to call the endpoint from the web routes, it is timing out:

Route::get('/auth', function () {
    $client = new GuzzleHttpClient();
    return json_deconde($client->post('http://localhost/api/auth/token')
        ->getBody()
        ->getContents());
});

I tried to following hosts

• http://localhost:8000
• http://127.0.0.1:8000
• http://localhost
• http://127.0.0.1
• http://172.30.0.1 (what is the gateway if the sail container)
• http://192.168.168.10 (what is the network ip of the host)

Inside of the sail container curl --request POST 'http://localhost/api/auth/token' is successfully working.