Create a hook or plugin woocommerce

Hi!

We have a Woo commerce online drink store that makes "deliveries" for our customers.

On the checkout page I have following totals:

Subtotal: (Sum values of total products)
Discount: (General value of discount)
Tax delivery: (The value of delivery bike boy)
Total: ((Subtotal + Tax delivery) - Discount

I need to get the exactly value of tax delivery consuming a "get method" in (https://loja.zionpdv.com.br/frete.aspx?CEP=05142160&chave=dm43IQ60G50ajJS%)

I need to pass a ZIP code as a parameter to get tax delivery value.

The response will be a json value like this:

{"DISTANCIA":"112.89 Km","TAXA_ENTREGA":5.50}

This field "TAXA_ENTREGA" is a value there I want and I need to put and calculate this value on my checkou page.

So. Somebody can help me ?


I have to make a hook or