Here you will find requirements for integrating with SAPIENT CORE API.
The documentation specifically covers how the API can be used by business customers to conduct shipping activity with available carriers and provides the technical information to build this integration. The API allows customers to create and manage shipments, produce labels, customs documentation, and collection manifests, retrieve reference data such as carriers and countries, and maintain their own data such as shipping account details.
Intersoft API is a fully RESTful service implemented using JSON messaging. You, as the customer are responsible for sending JSON messages and for maintaining the capability of receiving JSON messages in the format described in this specification. Request and response examples for each API service are included in this specification.