Understand what the event represents
Read the provider’s event definition and identify the business action it should trigger. An event may signal that something changed rather than contain a complete current record. Decide whether the integration needs to fetch additional information. Record the event types you support so unrelated or newly introduced events do not accidentally trigger business actions.
Verify the sender and limit exposure
Use the provider’s documented signature or authentication process and protect the endpoint from unbounded input. Keep secrets out of source control and logs. Verify against the exact request representation required by the provider. A public endpoint should not trust a payload merely because its fields resemble the expected event.
Design for duplicates and ordering
A delivery may be retried, arrive late or appear in a different order from another event. Use stable identifiers and appropriate idempotency controls so the same event does not create repeated orders or notifications. Define how you determine the current state. Do not assume the last request received always describes the latest business state.
Make failures recoverable
Record processing status and enough diagnostic context to investigate without retaining unnecessary sensitive data. Decide how failed events are retried or reviewed and how the systems are reconciled. Monitor the queue or failure list with an assigned owner. A webhook is useful when the business can recover from missed processing, not just when the endpoint returns a success code.
Your practical checklist
- Define supported events and business actions
- Verify requests using provider instructions
- Handle duplicate and out-of-order deliveries
- Assign retry, reconciliation and monitoring ownership
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