Laravel Http request HTTP/1.1 302 Found

When I am making the following POST request, I am getting the HTTP/1.1 302 Found response and Redirected. I have also attached my Route from api.php file below.

POST http://127.0.0.1:8000/api/product/add HTTP/1.1
Content-Type: application/json 

{
    "name": "Milk",
    "size": "1000",
    "size_type": "ml",
    "price": 500,
    "discounted_price": 100,
    "image": "www.google.com",
}

Route::post('/product/add', function() {
    request()->validate([
        'name' => 'required', 
        'size' => 'required', 
        'size_type' => 'required', 
        'price' => 'required', 
        'discounted_price' => 'required', 
        'image' => 'required',
    ]);
    
    return Product::create([
        'name' => request('name'), 
        'size' => request('size'), 
        'size_type' => request('size_type'), 
        'price' => request('price'), 
        'discounted_price' => request('discounted_price'), 
        'image' => request('image'),
    ]);
});