Handling the subscription lifecycle with Paddle webhooks

Paddle webhooks enable SaaS applications to synchronize subscription access with billing events that occur after checkout, including renewals, upgrades, failed payments, pauses, and cancellations. Using Paddle’s Next.js starter kit with Supabase as an example, the discussion recommends storing subscription status, product or price information, customer IDs, and scheduled-change dates locally so access checks can be fast, while retrieving less time-sensitive billing history directly from Paddle. Integrations should verify webhook signatures from the raw request body, return a successful response within Paddle’s five-second limit, process events asynchronously when needed, deduplicate deliveries using event_id, and use occurred_at timestamps to prevent delayed events from overwriting newer subscription states. Paddle provides both broad update events and convenience events for specific changes, though subscription.created and subscription.updated are generally sufficient for provisioning. Teams can recover from outages or data drift by reconciling against Paddle’s 90-day event stream and can test scenarios such as failed renewals through the webhook simulator, preferably using separate simulation destinations. Access should be granted from verified backend subscription events rather than browser-side checkout completion, with statuses such as trialing and active typically allowing access, past_due permitting temporary access, paused limiting it, and canceled revoking it. Hookdeck can optionally verify webhooks at the edge, queue deliveries, and extend processing time, but applications still need their own idempotency and event-ordering safeguards.

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