# Webhooks

**Receive payment result notifications via Webhooks**

The Axepta Online API enables asynchronous event notifications through Webhooks, allowing your system to automatically receive the final result of a payment for hosted integration types, without the need for continuous polling.

**Basic Webhook** 

Sends only the payId, allowing your system to fetch full payment details afterward.

**Enhanced Webhook**

Sends the complete payment information directly within the webhook payload.

For information on securing webhook communication, see the *Security & verification* section in the [documentation](https://developer.computop.com/display/EN/REST+API+Webhooks).

## Basic Webhook

 - [POST /{merchantBasicWebhookUrl}](https://axeptabnpparibas-docs.redocly.app/webhooks/paths/~1%7Bmerchantbasicwebhookurl%7D/post.md): The payload contains only the unique Axepta Online payId. The merchant can use this value to call the Retrieve payment details by payment ID endpoint to obtain full transaction details.

Since no sensitive data is transmitted, no HMAC signature is used for this Webhook type.

When the merchant receives a webhook, their endpoint must respond with an HTTP status code to acknowledge successful processing.

## Enhanced Webhook

 - [POST /{merchantEnhancedWebhookUrl}](https://axeptabnpparibas-docs.redocly.app/webhooks/paths/~1%7Bmerchantenhancedwebhookurl%7D/post.md): The Enhanced Webhook includes detailed transaction data in the payload and is signed with an HMAC signature to ensure authenticity and integrity.