Risk Operations / 5 min read / 2026-07-21

Webhook Retries and Idempotency for Risk Decisions

How to receive Naiza risk webhooks safely, retry failed delivery, and avoid duplicate case updates in fraud and AML workflows.

Webhook delivery is where fraud decisions become operational work. A clean integration should accept each notification quickly, verify it, enqueue processing, and make every downstream update idempotent so retries do not create duplicate cases or conflicting customer states.

Receive Quickly

Treat the webhook endpoint as a thin intake layer. Verify the signature, persist the event payload, and return a success response after the message is safely queued. Long-running case creation, customer notification, and internal routing should happen outside the HTTP request.

POST /webhooks/naiza/risk

Make Updates Idempotent

Use the Naiza event identifier plus your internal case identifier as the stable key for downstream work. If the same webhook is delivered twice, the second attempt should update the existing case record instead of creating a new one.

  • Store the webhook delivery ID and decision event ID.
  • Upsert the case by event ID before adding comments or tasks.
  • Record the last applied decision so repeated REVIEW or BLOCK messages do not reopen closed work.
  • Keep customer-facing state changes behind one explicit transition in your product.

Retry With Context

Retries are useful only when operators can understand what failed. Log the response code, destination, event ID, and next retry time. For repeated failures, route a single alert to the owning team with the affected event IDs.

Close the Loop

When an investigation finishes, send feedback back to Naiza with the final label and your case reference. That creates a better audit trail and helps future rule tuning.

Configure the webhook tutorial before connecting production alerts.