The ShipStation API has a "Get Rates" endpoint that allows a consumer to retrieve rates for carrier shipping services, much like the Rate Calculator in the web interface (except the API requires you to specify the carrier).
In the response, the call returns the following fields:
- serviceName (FedEx First Overnight)
- serviceCode (fedex_first_overnight)
- shipmentCost (87.8)
- otherCost (2.63)
In the web interface, it also returns Package (which I'm not too concerned about) and Delivery Time ("7 days," "3 days," etc).
It would help me tremendously to have the API report the Delivery Time for each rate quote, which is already presented in the web. I am implementing a Delivery Time Estimate in my online store based on this information and my order handling time, and without this information, I may have to implement API calls to the shipping service and avoid using ShipStation's API.