generated: '2026-07-26'
method: derived
source: openapi/apex27-crm-api-openapi.yml (/webhooks operations) + https://apex27.co.uk/integration/n8n
spec_type: Webhooks
asyncapi:
  published: false
  evidence: No AsyncAPI document exists at any probed location, and Apex27 publishes no event catalogue.
surface:
  kind: subscription-managed webhooks
  management_api: https://api.apex27.co.uk/webhooks
  auth: x-api-key header, same as the rest of the CRM API
  evidence: Apex27 exposes webhook subscriptions as a first-class CRM resource with full CRUD, and its
    own integration page states the n8n node gives "direct access to the full Apex27 CRM API, covering
    everything from contacts and listings to viewings, valuations, and webhooks". Every /webhooks route
    returned HTTP 401 (not 404) on an anonymous probe, confirming the routes are live.
operations:
- operationId: listWebhooks
  method: GET
  path: /webhooks
  summary: List webhook subscriptions
- operationId: createWebhook
  method: POST
  path: /webhooks
  summary: Create a webhook subscription
- operationId: getWebhook
  method: GET
  path: /webhooks/{webhookId}
  summary: Get a webhook subscription
- operationId: updateWebhook
  method: PUT
  path: /webhooks/{webhookId}
  summary: Update a webhook subscription
- operationId: deleteWebhook
  method: DELETE
  path: /webhooks/{webhookId}
  summary: Delete a webhook subscription
events: []
events_note: DELIBERATELY EMPTY. Apex27 publishes no event-type catalogue and no payload schema, and the
  subscription body is passed through as opaque JSON by Apex27's own client. The event names are only
  discoverable inside a paying tenant. Nothing is guessed here.
delivery:
  retries: null
  signing: null
  ordering: null
  ip_allowlist: null
  evidence: No delivery, retry, signature-verification or replay semantics are published.
polling_alternative:
  available: true
  params:
  - minDtsUpdated
  - minDtsCreatedUpdated
  note: Contacts, listings, tenancies and saved listing searches accept a minimum-updated timestamp, so
    incremental polling is a workable substitute where the event catalogue is unknown.