--- title: Webhook payload schema description: Review the JSON payload structure for webhooks. image: https://developers.cloudflare.com/core-services-preview.png --- > Documentation Index > Fetch the complete documentation index at: https://developers.cloudflare.com/notifications/llms.txt > Use this file to discover all available pages before exploring further. [Skip to content](#%5Ftop) # Webhook payload schema When you [configure a generic webhook](https://developers.cloudflare.com/notifications/get-started/configure-webhooks/#generic-webhooks), Cloudflare sends a JSON payload to your specified URL for each notification. This page documents the structure of that payload. ## Payload structure All generic webhook notifications follow this schema: ``` { "name": "string", "text": "string", "data": {}, "ts": 1136214245, "account_id": "string", "policy_id": "string", "policy_name": "string", "alert_type": "string", "alert_correlation_id": "string", "alert_event": "string"} ``` ### Field descriptions | Field | Type | Description | | ---------------------- | ------- | ----------------------------------------------------------------------------------- | | name | string | The name of the notification policy. | | text | string | A human-readable description of the notification with interpolated values. | | data | object | The alert-specific data. The structure varies by alert\_type. | | ts | integer | The unix timestamp (seconds since epoch, UTC) when the notification was generated. | | account\_id | string | The account ID for which this webhook was fired. | | policy\_id | string | The UUID of the notification policy that triggered this webhook. | | policy\_name | string | The name of the notification policy. | | alert\_type | string | The unique identifier for the alert type (for example, http\_alert\_origin\_error). | | alert\_correlation\_id | string | The UUID that groups related alerts together. | | alert\_event | string | The event state, such as ALERT\_STATE\_EVENT\_START or ALERT\_STATE\_EVENT\_END. | Note The `account_id`, `policy_id`, and `alert_type` fields may not be present in all notifications, depending on the alert type and context. ## Example payloads The following examples show the payload structure for common alert types. The `data` object varies based on the specific alert. DDoS attack (Layer 4) ``` { "account_id": "9035f53656c247e895c5a6939ae8a0e0", "alert_correlation_id": "000eaa907ed24e78946d3a93adb2ae57", "alert_event": "ALERT_STATE_EVENT_START", "alert_type": "advanced_ddos_attack_l4_alert", "data": { "account_name": "string", "account_tag": "string", "action": "string", "attack_id": "string", "attack_vector": "string", "dashboard_link": "string", "max_rate": "string", "megabits_per_second": 0, "mitigation": "string", "packets_per_second": 0, "protocol": "string", "rule_description": "string", "rule_id": "string", "rule_name": "string", "ruleset_id": "string", "ruleset_override_id": "string", "start_time": "2006-01-02T15:04:05Z", "target_id": "string", "target_ip": "string", "target_port": 0 }, "name": "Example Cloudflare Notification", "policy_id": "749b911ea5d04344a58e45edd099b328", "policy_name": "Example Cloudflare Notification", "text": "The description of my Cloudflare notification.", "ts": 1136214245} ``` DDoS attack (Layer 7) ``` { "account_id": "9035f53656c247e895c5a6939ae8a0e0", "alert_correlation_id": "000eaa907ed24e78946d3a93adb2ae57", "alert_event": "ALERT_STATE_EVENT_START", "alert_type": "advanced_ddos_attack_l7_alert", "data": { "account_name": "string", "account_tag": "string", "action": "string", "attack_id": "string", "attack_type": "string", "dashboard_link": "string", "max_rate": "string", "mitigation": "string", "requests_per_second": 0, "rule_description": "string", "rule_id": "string", "rule_link": "string", "ruleset_id": "string", "ruleset_override_id": "string", "start_time": "2006-01-02T15:04:05Z", "target_hostname": "string", "zone_name": "string", "zone_tag": "string" }, "name": "Example Cloudflare Notification", "policy_id": "749b911ea5d04344a58e45edd099b328", "policy_name": "Example Cloudflare Notification", "text": "The description of my Cloudflare notification.", "ts": 1136214245} ``` SSL certificate expiration ``` { "account_id": "9035f53656c247e895c5a6939ae8a0e0", "alert_correlation_id": "000eaa907ed24e78946d3a93adb2ae57", "alert_event": "ALERT_STATE_EVENT_START", "alert_type": "dedicated_ssl_certificate_event_type", "data": { "account_name": "string", "account_tag": "string", "certificate_id": "string", "certificate_pack_id": "string", "certificate_status": "string", "event_type": "string", "hostnames": "string", "pack_ca": "string", "pack_id": "string", "pack_status": "string", "pack_validation": "string", "zone_name": "string", "zone_tag": "string" }, "name": "Example Cloudflare Notification", "policy_id": "749b911ea5d04344a58e45edd099b328", "policy_name": "Example Cloudflare Notification", "text": "The description of my Cloudflare notification.", "ts": 1136214245} ``` Origin health check ``` { "account_id": "9035f53656c247e895c5a6939ae8a0e0", "alert_correlation_id": "000eaa907ed24e78946d3a93adb2ae57", "alert_event": "ALERT_STATE_EVENT_START", "alert_type": "health_check_status_notification", "data": { "account_name": "string", "account_tag": "string", "failing_regions": "string", "health_check_id": "string", "health_check_name": "string", "new_health_status": "string", "new_status": "string", "old_status": "string", "origin_ip": "string", "reason": "string", "status_change_time": "2006-01-02T15:04:05Z", "time_since_last_failure": "string", "zone_name": "string", "zone_tag": "string" }, "name": "Example Cloudflare Notification", "policy_id": "749b911ea5d04344a58e45edd099b328", "policy_name": "Example Cloudflare Notification", "text": "The description of my Cloudflare notification.", "ts": 1136214245} ``` Workers alert ``` { "account_id": "9035f53656c247e895c5a6939ae8a0e0", "alert_correlation_id": "000eaa907ed24e78946d3a93adb2ae57", "alert_event": "ALERT_STATE_EVENT_START", "alert_type": "workers_alert", "data": { "account_name": "string", "account_script_count": 0, "account_tag": "string", "alert_type": "string", "current_year": 0, "end_date": "string", "exceeding_script_count": 0, "scripts": [ { "constant_script_id": 0, "cpu_time_previous_value": 0, "cpu_time_unit": "string", "cpu_time_value": 0, "data_egress_unit": "string", "data_egress_value": 0, "duration_previous_value": 0, "duration_unit": "string", "duration_value": 0, "last_modified": "string", "request_count_previous_value": 0, "request_count_unit": "string", "request_count_value": 0, "routes": ["string"], "script_name": "string", "usage_model": 0 } ], "start_date": "string", "total_data_egress_unit": "string", "total_data_egress_value": 0, "total_duration_unit": "string", "total_duration_value": 0, "total_request_count_unit": "string", "total_request_count_value": 0 }, "name": "Example Cloudflare Notification", "policy_id": "749b911ea5d04344a58e45edd099b328", "policy_name": "Example Cloudflare Notification", "text": "The description of my Cloudflare notification.", "ts": 1136214245} ``` Access certificate expiration ``` { "account_id": "9035f53656c247e895c5a6939ae8a0e0", "alert_correlation_id": "000eaa907ed24e78946d3a93adb2ae57", "alert_event": "ALERT_STATE_EVENT_START", "alert_type": "access_custom_certificate_expiration_type", "data": { "account_name": "string", "account_tag": "string", "certificate_id": "string", "days_til_expiration": 0, "hostnames": "string", "zone_name": "string", "zone_tag": "string" }, "name": "Example Cloudflare Notification", "policy_id": "749b911ea5d04344a58e45edd099b328", "policy_name": "Example Cloudflare Notification", "text": "The description of my Cloudflare notification.", "ts": 1136214245} ``` Workers observability alert ``` { "account_id": "9035f53656c247e895c5a6939ae8a0e0", "alert_correlation_id": "000eaa907ed24e78946d3a93adb2ae57", "alert_event": "ALERT_STATE_EVENT_START", "alert_type": "workers_observability_alert", "data": { "account": { "id": "string", "name": "string" }, "config": { "id": "string", "name": "string" }, "episode": { "first_failed": "2006-01-02T15:04:05Z", "first_fired": "2006-01-02T15:04:05Z", "id": "string", "last_failed": "2006-01-02T15:04:05Z", "resolved_at": "2006-01-02T15:04:05Z", "summary": "string" }, "status": "PENDING" }, "name": "Example Cloudflare Notification", "policy_id": "749b911ea5d04344a58e45edd099b328", "policy_name": "Example Cloudflare Notification", "text": "The description of my Cloudflare notification.", "ts": 1136214245} ``` ## Validate webhook payloads You can use the `cf-webhook-auth` header to verify that incoming webhooks are from Cloudflare. When you configure a webhook with a secret, Cloudflare includes this header with your secret value in every request. Reject any requests where this header is missing or does not match your configured secret. ## Related resources * [Configure webhooks](https://developers.cloudflare.com/notifications/get-started/configure-webhooks/) * [Available notification types](https://developers.cloudflare.com/notifications/notification-available/) ```json {"@context":"https://schema.org","@type":"TechArticle","@id":"https://developers.cloudflare.com/notifications/reference/webhook-payload-schema/#page","headline":"Webhook payload schema ยท Cloudflare Notifications docs","description":"Review the JSON payload structure for webhooks.","url":"https://developers.cloudflare.com/notifications/reference/webhook-payload-schema/","inLanguage":"en","image":"https://developers.cloudflare.com/core-services-preview.png","dateModified":"2026-04-24","publisher":{"@type":"Organization","name":"Cloudflare","url":"https://www.cloudflare.com/"},"isPartOf":{"@type":"WebSite","@id":"https://developers.cloudflare.com/#website","name":"Cloudflare Docs","url":"https://developers.cloudflare.com/"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/directory/","name":"Directory"}},{"@type":"ListItem","position":2,"item":{"@id":"/notifications/","name":"Notifications"}},{"@type":"ListItem","position":3,"item":{"@id":"/notifications/reference/","name":"Reference"}},{"@type":"ListItem","position":4,"item":{"@id":"/notifications/reference/webhook-payload-schema/","name":"Webhook payload schema"}}]} ```