> ## Documentation Index
> Fetch the complete documentation index at: https://docs.wachat.net/llms.txt
> Use this file to discover all available pages before exploring further.

# Webhooks

> Receive real-time WhatsApp events in your application.

Webhooks let Wachat notify your server when a message or instance event occurs. Create and manage subscriptions with the [webhook endpoints](/api-reference/webhooks).

## Endpoint requirements

Your webhook URL must be publicly reachable over HTTPS and should return a successful `2xx` response quickly. Process heavier work asynchronously after acknowledging the request.

## Security checklist

* Use HTTPS.
* Verify the event signature when one is provided.
* Reject unknown event types safely.
* Store the event ID and make processing idempotent.
* Return `2xx` only after the payload has been accepted.

Webhook delivery can be retried when your endpoint is unavailable or returns an error. Do not assume every delivery is unique.