post https://api.warehance.com/v1/returns/shop-rates
Required permission: read_returns and write_returns
Get shipping rates for return shipments from various carriers. This endpoint allows you to compare return shipping rates across different carriers and services before creating a return label.
The endpoint supports multiple carrier integrations including EasyPost, EasyPost User, and Shippo. It will return rates from all available carrier connections that are enabled for returns and active.
Note: For client-level API keys, the client_id field is automatically set to the client's ID and cannot be overridden.