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Use this page to quickly see which events Blaaiz emits and what every webhook payload contains.

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Event types

Your business has two webhook URLs: collection_url and payout_url. The table below shows every event and which URL it is delivered to.
EventDescriptionDelivered toGuide
collection.initiatedCollection request createdcollection_urlCollection
collection.pendingAwaiting customer paymentcollection_urlCollection
collection.completedPayment received successfullycollection_urlCollection
collection.failedPayment failedcollection_urlCollection
payout.initiatedPayout has been createdpayout_urlPayout
payout.processingPayout is being processedpayout_urlPayout
payout.completedPayout completed successfullypayout_urlPayout
payout.failedPayout failedpayout_urlPayout
customer.createdNew customer createdcollection_urlCustomer
customer.verifiedCustomer KYC verifiedcollection_urlCustomer
customer.rejectedCustomer KYC rejectedcollection_urlCustomer
virtual_account.createdVirtual account createdcollection_urlVirtual account
virtual_account.readyVirtual account ready to receive fundscollection_urlVirtual account
virtual_account.rejectedVirtual account verification rejectedcollection_urlVirtual account
virtual_account.failedVirtual account creation failedcollection_urlVirtual account
virtual_account.creditedFunds received in virtual accountcollection_urlVirtual account
All events except payout events are delivered to your collection_url. Register both URLs via the Webhook API.

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Payload structure

All webhook payloads include:
  • event — The event type
  • data — The event data object
  • timestamp — When the event occurred
  • signature — HMAC signature for verification (header: x-blaaiz-signature)
Always verify the x-blaaiz-signature using your webhook signing_secret to ensure the webhook originates from Blaaiz.

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Webhook retries

We retry deliveries with exponential backoff and jitter to avoid thundering herds.
  • Attempts: up to 10 total
  • Initial backoff: 5 minutes
  • Backoff factor: 2x per attempt
  • Max backoff cap: 24 hours (1440 minutes)
  • Jitter: 80–120% randomization on each delay
  • Success: any HTTP 2xx response stops retries
  • Any non-2xx (4xx/5xx/timeout/connection error) triggers the next retry
Approximate schedule (actual delays vary ±20% because of jitter):
AttemptApprox. delayCumulative time
1Immediate0
2~5 minutes~5 min
3~10 minutes~15 min
4~20 minutes~35 min
5~40 minutes~1.25 hours
6~80 minutes~2.5 hours
7~160 minutes~5 hours
8~320 minutes~10 hours
9~640 minutes~21 hours
10~1280 minutes~42 hours
After 10 failed attempts, the webhook is marked permanently failed and no further automatic retries occur. You can manually replay via the API.
⚙️ Best practices
  • Reply with a 2xx quickly (within 30 seconds) and process work asynchronously if needed.
  • Implement idempotency using the event_id so duplicate deliveries don’t double-process work.
  • Return non-2xx only when you truly want a retry.

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Data retention

Webhook logs (payloads, responses, attempt history) are retained for 90 days. After 90 days, records are pruned for both successful and failed deliveries.
  • If you need webhook data beyond 90 days, store it in your own systems.
  • Replay is only available for webhooks within the 90-day window.