What should a webhook payload JSON include?

Event type, a unique event ID, timestamp, version, and the event-specific data object. A signature for HMAC-SHA256 verification lives in the HTTP header, not the payload itself.

How do I validate an incoming webhook payload?

Paste the payload into JSONBlitz to validate the structure, then use the JSON Schema tab to generate a schema for your event type. Use that schema in your webhook handler to validate all incoming events.

What is idempotency in webhooks?

Webhook providers retry failed deliveries, so your handler may receive the same payload multiple times. Include a unique event_id in your JSON payload and store processed IDs to deduplicate.

Can JSONBlitz help me design a webhook payload format?

Yes. Paste an example payload, use Tree view to check the structure, and use JSON Schema to generate a contract you can share with API consumers.

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Frequently Asked Questions

What should a webhook payload JSON include?: Event type, a unique event ID, timestamp, version, and the event-specific data object. A signature for HMAC-SHA256 verification lives in the HTTP header, not the payload itself.
How do I validate an incoming webhook payload?: Paste the payload into JSONBlitz to validate the structure, then use the JSON Schema tab to generate a schema for your event type. Use that schema in your webhook handler to validate all incoming events.
What is idempotency in webhooks?: Webhook providers retry failed deliveries, so your handler may receive the same payload multiple times. Include a unique event_id in your JSON payload and store processed IDs to deduplicate.
Can JSONBlitz help me design a webhook payload format?: Yes. Paste an example payload, use Tree view to check the structure, and use JSON Schema to generate a contract you can share with API consumers.