I would like to integrate the Rest API thru fedex to your private app for your Carrier Service. we have read this(https://help.shopify.com/en/api/reference/shipping-and-fulfillment/carrierservice) article but did not getting how to send request to CarrierService. Firstly we have created CarrierService and after that which endpoint use for request send?
Simply we want to calculate shipping price with rest api throw fedex CarrierService and create order with shipping price throw rest api.
What your asking is definitely possible, but If your adding courier service to your plan - why not take advantage of the built-in FedEx integration provided by Shopify. https://help.shopify.com/en/manual/shipping/setting-up-and-managing-your-shipping/enabling-shipping-...