Webhooks

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Webhooks tell your server about billing events as they happen: invoices posted and paid, checkout sessions, payments, credit balances running out and credit caps reached. Each of the ten events has its own destination URL and can be switched on and off. Every delivery is a JSON POST signed with your signing secret in the X-Webhook-Signature header, and a delivery your endpoint doesn't accept is retried with backoff for about 15 hours; the Webhooks section of this reference has each event's payload.