> ## Documentation Index > Fetch the complete documentation index at: https://docs.pulseshiga.io/llms.txt > Use this file to discover all available pages before exploring further. # Webhook events > Every signed lifecycle event and its payload shape, as verified and typed by pulse.webhooks.verify / verifyOnce. Every delivery is signed (`Pulse-Signature`, HMAC-SHA256 over the raw body), at-least-once, and carries an `evt_*` id for de-duplication. `pulse.webhooks.verify` / `verifyOnce` return the typed `WebhookEvent`. See [Webhooks](/backend/webhooks) for the handler pattern and the [node reference](/reference/node#webhooks) for the method signatures. This surface reflects the `@pulsebyshiga/node` types — the working view of the API until the canonical Pulse OpenAPI contract is published. Wire shapes (snake\_case JSON, decimal-string amounts) are stable; a few fields are still being reconciled and are flagged where they appear. ## Envelope Every event shares this envelope; only `type` and the `data` shape differ. `evt_*` — the idempotency key for consumers. The event name (the `##` headings below). Event-specific payload, documented per event below. Credit a customer **only** after a verified `disbursement.completed` event — never off a client callback. See [Webhooks](/backend/webhooks). ## collection.order.created The full order (see [CollectionOrder](/reference/node#response-collectionorder)). ## collection.deposit.detected On-chain detected amount — the credited figure, never the quoted one. ## collection.deposit.confirmed Same `Deposit` shape as `collection.deposit.detected`; `confirmed_at` is now set. ## collection.deposit.wrong\_chain Provisional contract shape (PRD wrong-chain row) — the real detection signal comes from Pulse and the recovery policy is still being decided. Treat as subject to change until the canonical contract publishes. Network the funds actually arrived on (may be outside the supported set). The network the order expected payment on. ## collection.amount.underpaid Expected amount, decimal string. Received amount, decimal string. ## collection.amount.overpaid Same shape as `collection.amount.underpaid`: `order_id`, `expected`, `received`, `asset`, `network`, `tx_hash`. ## collection.order.expired ## collection.order.failed ## disbursement.completed The only event you should credit a customer from. Naira gate only; null for USD (partner omnibus).