Alipay Webhooks

Alipay's global / cross-border products — Antom (Cashier Payment / AMS) and Alipay+ — deliver asynchronous webhook notifications (notifyPayment, notifyRefund, notifyCapture, notifyAuthorization, notifyDispute) signed with an asymmetric RSA256 (SHA256withRSA) scheme carried in a Signature header. This skill targets that header-based scheme.

Legacy note: The older Alipay openapi / MAPI integration (openapi.alipay.com, global.alipay.com) is a different, unrelated scheme — form-encoded params with sign + sign_type=RSA2, verified by stripping sign/sign_type, sorting the remaining params A–Z, joining with &, and replying with the plain text success. If your integration posts application/x-www-form-urlencoded bodies with a sign field, you are on that older vintage — this skill does not cover it. Everything below is the modern Antom/Alipay+ header RSA256 scheme.

When to Use This Skill