Finalcad Webhooks

generated: '2026-08-17'
method: searched
source: https://developer.finalcad.com/
docs: https://developer.finalcad.com/
type: webhooks
asyncapi_published: false
notes: >-
  Finalcad publishes a webhook surface but no AsyncAPI, no CloudEvents binding and no event-schema
  reference. This file captures the webhook catalog as Finalcad documents it, in the Webhook folder
  of its developer portal and in the API 2.16 release note of 22 January 2024 that introduced it.
  NOTHING here is invented: where Finalcad does not publish the payload shape or the full event
  list, that is recorded as a gap rather than filled in.

subscription_model:
  direction: outbound
  transport: HTTPS POST to a subscriber-supplied client_url
  managed_via: the Finalcad One API itself (see openapi/finalcad-webhooks-openapi.yml)
  scope: >-
    A hook is created against BOTH a business_organization_id and a project_id, so subscriptions are
    per project, not per organization. There is no documented way to subscribe once for every
    project in an organization.
  management_operations:
  - operationId: getEventsList
    method: GET
    path: /webhooks/getevents
    purpose: List every subscribable event code.
  - operationId: createHook
    method: POST
    path: /webhooks
    purpose: Subscribe to an event.
  - operationId: getHooksForTheOrganization
    method: GET
    path: /webhooks/organization/{organizationId}
    purpose: List an organization's subscriptions.
  - operationId: getHook
    method: GET
    path: /webhooks/{hookId}
    purpose: Read one subscription.
  - operationId: updateHook
    method: PUT
    path: /webhooks/{hook_id}
    purpose: Change the client_url or client_token of a subscription.
  - operationId: deleteHook
    method: DELETE
    path: /webhooks/{hook_id}
    purpose: Unsubscribe.

subscription_object:
  fields:
    hook_id: uuid of the subscription
    event: event name (returned) / event code as integer (sent on create)
    business_organization_id: organization the hook belongs to
    project_id: project the hook is scoped to
    user_id: user who owns the subscription
    client_url: the URL Finalcad calls when the event fires
    client_token: optional secret value the subscriber supplies
    client_header_key: optional header name the client_token is sent in
    is_enabled: boolean
    created_at / created_by / updated_at / updated_by: audit fields

authentication_to_subscriber:
  mechanism: static shared secret in a caller-named header
  detail: >-
    The subscriber chooses a header name (client_header_key) and a value (client_token); Finalcad
    sends that header on the callback. There is NO HMAC signature, no timestamp, no replay window
    and no published signing key, so a subscriber cannot verify that a callback body was not
    tampered with — only that whoever sent it knew a static secret. Both fields are optional and
    both are empty in every published example.
  hmac: false
  replay_protection: false

event_codes:
  numbering: >-
    Codes are grouped in hundreds. Finalcad states "a generic event automatically subscribes to all
    sub-events (those with the same hundreds digit)" — subscribing to the generic 100 also delivers
    104 and every other 1xx event.
  published_examples:
  - code: 100
    designation: Meeting
    generic: true
  - code: 104
    designation: MeetingGeneration
    generic: false
  completeness: partial
  completeness_note: >-
    The two codes above are the only ones in Finalcad's published example response. The FULL list is
    only obtainable from GET /webhooks/getevents, which requires an organization API key — so the
    authoritative event catalog is auth-gated. The prose in the release notes names the covered
    entity families (below) but not their numeric codes.

documented_event_families:
- entity: Meeting
  actions: [created, updated, deleted]
  introduced: '2.16'
- entity: Observation
  actions: [created, updated, deleted]
  introduced: '2.16'
- entity: Form
  actions: [created, updated, deleted]
  introduced: '2.16'
- entity: Document
  actions: [created, updated, deleted]
  introduced: '2.16'
- entity: Plan
  actions: [created, updated, deleted]
  introduced: '2.16'
- entity: Folder
  actions: [created, updated, deleted]
  introduced: '2.16'
- entity: Trade
  actions: [created, updated, deleted]
  introduced: '2.16'
- entity: CommonObservation
  actions: [created, updated, deleted]
  introduced: '2.16'
- entity: Company
  actions: [created, updated, deleted]
  introduced: '2.16'

delivery:
  retries: undocumented
  timeout: undocumented
  ordering: undocumented
  payload_schema: undocumented
  payload_note: >-
    Finalcad publishes no example of a delivered webhook body — only of the subscription object.
    An integrator cannot know the callback payload shape without subscribing and observing it.

alternative_change_feed:
  mechanism: differential polling
  detail: >-
    Finalcad's own primary change mechanism is polling, not push — every differential endpoint
    returns a continuous_token which, replayed later, yields only what changed since. See
    conventions/finalcad-conventions.yml. For most integrations that is the documented path; the
    webhook surface is the thinner of the two.

gaps:
- Full event-code list is behind an API key.
- No payload schema or example for any delivered event.
- No signature, timestamp or replay protection on the callback.
- No retry, backoff or dead-letter policy.
- No AsyncAPI, no CloudEvents, no event registry.