Change Flat Rate Price based on data return from API

Distance Rate Shipping does this, so it is definitely possible.

I don’t think it requires any custom ajax. As far as I know, it just adds a rate with this method: https://github.com/woothemes/woocommerce/blob/8eef06207969678d9d2af360e6ded2bcc135e4ca/includes/abstracts/abstract-wc-shipping-method.php#L235

Rates are refreshed when the address changes already.

can i add 3 options for that?

for example

delivery option 1(2 hrs)
delivery option 2(4 hrs)
delivery option 3(same day)

with different amount?

Do you want users to select between these three options? If so, just create a shipping method for each option, with the price set based on the Sherpa API results. This is quite custom though, so we can’t offer any kind of help with it.

Hi, I solved this problem by adding a custom dropdown field and the amount is automatically generated by the API. Its working fine with all of the products EXCEPT the recurring ones or subscription products..

Is there a way to add a custom fee on the recurring products?? Thank you.