> [!CAUTION]
> **Caution:** This documentation is for Google Ads API **v24** . The latest active version is [**v26**](https://developers.google.com/google-ads/api/reference/rpc/latest/WebhookDelivery).

Google notifies the advertiser of leads by making HTTP calls to an endpoint they specify. The requests contain JSON matching a schema that Google publishes as part of form ads documentation.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v24/common/asset_types.proto)

| Fields ||
|---|---|
| ## `advertiser_webhook_url` | `string` Webhook url specified by advertiser to send the lead. |
| ## `google_secret` | `string` Anti-spoofing secret set by the advertiser as part of the webhook payload. |
| ## `payload_schema_version` | `int64` The schema version that this delivery instance will use. |