generated: '2026-08-27'
method: searched
source: >-
  Probed for an AsyncAPI document at https://www.elastic.co/asyncapi.yaml (404),
  https://www.elastic.co/docs/asyncapi.yaml (404) and
  https://raw.githubusercontent.com/elastic/elasticsearch/main/asyncapi.yaml
  (404). The webhook surface below was read out of
  openapi/elk-stack-kibana-openapi.yaml (connector type `.webhook`, 81
  occurrences) and
  https://www.elastic.co/docs/reference/kibana/connectors-kibana/webhook-action-type.
asyncapi:
  published: false
  note: >-
    Elastic publishes no AsyncAPI document. This is a correct absence rather
    than a gap: the Elastic Stack is not an event-driven SaaS that emits a
    catalog of subscribable events. Nothing was fabricated to fill the slot.
webhooks:
  published: true
  direction: outbound-from-deployment
  model: configurable connector, not a subscribable event catalog
  detail: >-
    Elastic's webhook surface is inverted compared with a typical SaaS. There
    is no "subscribe to elastic.deployment.updated" endpoint. Instead, Kibana
    alerting rules take ACTIONS, and one action type is `.webhook`, which POSTs
    a body you template to a URL you own when the rule fires. The subscription
    is therefore expressed as a rule + connector pair created through the
    Kibana API, and the event schema is whatever the rule author templates —
    Elastic defines the transport, the customer defines the payload.
  configured_via:
  - api: elk-stack:kibana-api
    operations:
    - post-actions-connector-id
    - post-actions-connector
    - get-actions-connectors
    - post-actions-connector-id-execute
    detail: >-
      Create, list and test-fire a connector. connector_type_id `.webhook` is the
      generic HTTP one.
  connector_types_observed:
  - id: .webhook
    name: Webhook
    auth:
    - none
    - webhook-authentication-basic
    - webhook-authentication-ssl
    detail: >-
      Generic HTTP POST/PUT with a templated body. Supports SSL client
      certificate authentication as well as basic auth, which is unusual for a
      webhook sender and useful for an agent receiving them.
  - id: .cases-webhook
    name: Webhook - Case Management
    detail: Maps Elastic case lifecycle onto an external ticketing system's HTTP API.
  signature_verification:
    supported: false
    detail: >-
      No HMAC signature header is documented. A receiver authenticates the
      SENDER by requiring basic auth or mutual TLS on its own endpoint rather
      than by verifying a signature on the payload. An agent consuming these
      must not assume a signature header exists.
  retry_semantics:
    detail: >-
      Delivery is retried by the Kibana task manager on failure, but no
      published retry schedule, maximum attempt count or dead-letter behaviour
      was located, so none is stated here.
  docs: https://www.elastic.co/docs/reference/kibana/connectors-kibana/webhook-action-type
event_sources_that_are_not_webhooks:
- name: Watcher
  detail: >-
    Elasticsearch's own alerting engine (24 operations, `watcher` tag) with
    webhook, email, Slack, PagerDuty and index actions. Predates and parallels
    Kibana alerting.
- name: Data streams and _search
  detail: >-
    The pull model most integrators actually use — poll a data stream or run a
    scheduled ES|QL query — rather than a push subscription. Worth naming
    because it is the reason Elastic has never needed an AsyncAPI.