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Follow these best practices to build a production-ready webhook integration that handles high volume, recovers from failures, and provides a great developer experience.
Looking for a quick start? Our Webhook Receiver Recipe provides a production-ready implementation of these best practices. It’s a serverless AWS solution that you can deploy in minutes with built-in queuing, signature verification, retry logic, and monitoring.

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Key Areas

Architecture Patterns

Decouple receipt from processing with queue-based patterns

Security

Verify signatures and protect against spoofed requests

Reliability

Implement idempotency and handle out-of-order delivery

Monitoring

Log events and set up alerts for critical metrics

Testing

Test locally and validate edge cases before production

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Quick Wins

Start with these essential practices for immediate impact:
Persist the payload to a queue and return a 200 status within milliseconds. Process asynchronously in a background worker.Impact: Prevents timeouts and unnecessary retries
Check the SC-Signature header on every request to ensure the payload came from Smartcar.Impact: Prevents security vulnerabilities from spoofed requests
Track processed eventId values to avoid processing the same event twice.Impact: Prevents duplicate database updates and notifications
Don’t ignore error events. They contain critical information about signal failures and permission issues.Impact: Better user experience and faster issue resolution

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Next Steps

Architecture Patterns

Learn the queue-based pattern

Security

Implement signature verification

Delivery Behavior

Understand retry policies