How to Protect an API Integration From Duplicate Webhook Events

Webhook providers may retry delivery when acknowledgments are delayed, so duplicate events are normal and should not repeat business actions.

Checks to make

Store the provider event identifier, acknowledge promptly after durable receipt, and process with an idempotent state transition. Track retries and processing failures, verify signatures, and test duplicate and out-of-order delivery in a safe environment.

When to get help

API integration engineering can design reliable webhook processing and observability. Informatix Systems can assess the symptoms, evidence, and next steps. Contact Informatix Systems to discuss this issue.