物流接口概览Shipping API overview
USPS 接入可作为多承运商策略中的基础链路。通过统一 API 字段,团队可以先完成标准流程上线,再按业务需求扩展多承运商策略。USPS is often used as a baseline lane in a carrier-mix strategy. A unified API schema helps teams launch core workflows first, then expand by business profile.