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Webhooks
Signed event delivery for merchant systems.
Webhook delivery connects payment lifecycle events to merchant endpoints while preserving signature verification, environment separation, idempotency, and bounded retries.
From intent to delivery
A clear lifecycle connects merchant payment context, observed evidence, and signed notifications.
Verify before processing
Merchant systems should verify the webhook signature and treat the event identifier and operation contract as the boundary for duplicate handling.
Retries are bounded
The existing delivery worker tracks attempts and terminal failure states. A retry is an operational action, not permission to rewrite payment evidence.
Live and Test remain distinct
Webhook delivery preserves environment identity. Test-mode simulations must not become live financial authority.
Build a clearer payment flow.
Start with the existing EXZIX account and merchant product flows.
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