generated: '2026-08-01'
method: searched
source: >-
  GumGum Contextual Documentation Center — Get Started Page API
  (https://gumgum.jira.com/wiki/spaces/VDC/pages/1712095256) and Get Started Video API
  (https://gumgum.jira.com/wiki/spaces/VDC/pages/1712029924).
spec_type: Webhooks
asyncapi_published: false
note: >-
  GumGum publishes no AsyncAPI document, and none was fabricated here. It does document a real
  webhook surface: every Contextual API surface accepts a caller-supplied callback URL, and GumGum
  POSTs the completed classification to it when analysis finishes — the documented alternative to
  polling. This artifact captures that webhook catalog. The payload delivered to the callback is
  the same classification document the GET result endpoints return, described in
  openapi/gumgum-contextual-api-openapi.yml (Classification / PageClassification / VerityData).
direction: outbound
transport: https
delivery: >-
  Caller registers the destination per request (there is no webhook-endpoint management console,
  no subscription resource and no event-type subscription model). GumGum POSTs the finished
  analysis once processing completes.
security:
  signing: not documented
  verification: not documented
  note: >-
    No webhook signature header, shared secret, or replay-protection mechanism is documented.
    Consumers should treat the callback as unauthenticated and re-fetch the result by uuid from
    the GET endpoint if provenance matters.
retries:
  documented: false
webhooks:
  - name: page.classification.completed
    trigger: A page classification submitted via GET /page/classify with callBackUrl completes.
    registration:
      surface: Page API
      mechanism: query parameter
      parameter: callBackUrl
      operation: openapi/gumgum-contextual-api-openapi.yml#classifyPage
    payload_schema: openapi/gumgum-contextual-api-openapi.yml#/components/schemas/PageClassification
  - name: video.classification.completed
    trigger: A video classification submitted via POST /video/classification with callbackUrl completes.
    registration:
      surface: Video API
      mechanism: request body field
      parameter: callbackUrl
      operation: openapi/gumgum-contextual-api-openapi.yml#submitVideoClassification
    payload_schema: openapi/gumgum-contextual-api-openapi.yml#/components/schemas/Classification
  - name: intravideo.classification.completed
    trigger: >-
      An intravideo (frame-level) classification submitted via POST /v2/video/classification with
      callbackUrl completes.
    registration:
      surface: Intravideo API (v2)
      mechanism: request body field
      parameter: callbackUrl
      operation: openapi/gumgum-contextual-api-openapi.yml#submitIntravideoClassification
    payload_schema: openapi/gumgum-contextual-api-openapi.yml#/components/schemas/Classification
coverage:
  documented_webhooks: 3
  surfaces_with_documented_callback: [page, video, intravideo]
  surfaces_without_documented_callback: [image, text]
  note: >-
    The Image and Text API reference pages describe the submit/poll pattern but do not document a
    callback parameter, so no webhook is asserted for them.