Developers Changelog Developer Docs
Developer Docs v2026.3
Webhooks guide rewritten with signature verification and retry behaviour, notification subscriptions split into their own guide, and Tap to Pay on iPhone rebuilt with availability and supported devices.
🔔 Webhooks, Rewritten
Category: Documentation
The webhooks guide was a short page that assumed you already knew the shape of an event. It now documents the whole contract.
- Full event type list with payloads
- Signature verification samples in several languages
- Retry logic written down, including what a failed delivery does next
- Duplicate handling — why the same event can arrive twice, and how to be idempotent about it
- Console setup walked through end to end
📬 Notification Subscriptions
Category: Documentation
Subscriptions were buried inside the webhooks guide and are a different job, so they are a guide of their own now.
- Email, Slack, and SFTP channels documented separately
- Merchant and partner subscription endpoints cross-linked to the reference
📱 Tap to Pay on iPhone
Category: Documentation
- Guide migrated from a hand-built page to Markdown, so it is searchable and sits on the guides rail
- New sections on availability, supported devices, and integration best practices
- Added the disclaimer covering Apple’s own entitlement and review requirements
🔄 Payment Lifecycle
Category: Documentation
- Corrected the description of when a payment status actually changes, which the create-order guide contradicted