Client
API
API Contract
Client asks. API responds. Your UI updates.
Webhooks reduce wasteful requests and improve real-time behavior.

Polling vs Webhooks

Polling asks repeatedly: "Anything new?" Webhooks reverse it: the API pushes an event only when something happens.

Register a Callback URL

You provide an HTTPS endpoint where events should be delivered, like `order.created` or `invoice.paid`.

Event Payload Delivery

When the event occurs, the provider sends an HTTP POST to your webhook endpoint with event metadata and payload.

Verify Signatures

Never trust incoming webhook data blindly. Verify signatures using the provider secret to confirm authenticity.

Handle Retries Safely

Providers retry failed webhooks. Store processed event IDs so duplicate deliveries do not create duplicate actions.

Log and Monitor

Track delivery attempts, failures, and processing latency. Webhook debugging is hard without strong logs.

Webhook Workflows Ready

You can now build event-driven API integrations that are secure, idempotent, and production-friendly.

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