Webhooks: Event-Driven Extensibility
Webhooks push HTTP notifications outward when something happens in FerrisKey. A user is created, a role is assigned, a client is deleted: FerrisKey POSTs a structured payload to the endpoints you registered.
Why
FerrisKey owns identity. Your application does not live inside it. Webhooks are the seam between the two.
They keep a CRM, a warehouse, or a marketing platform current without anyone polling. They start downstream work, a welcome email, a Slack message, a provisioning job, at the moment the event happens. They push security-relevant actions into your alerting. And they do all of that without your application knowing anything about FerrisKey’s internals.
How it works
graph LR
FK[FerrisKey] -->|Event occurs| Q[Event Queue]
Q --> W1[Webhook: Slack]
Q --> W2[Webhook: CRM Sync]
Q --> W3[Webhook: SIEM]Register a webhook
Create a webhook with a target endpoint URL, optional custom headers, and a name/description. The webhook is scoped to a realm.
Subscribe to events
Add subscribers to the webhook. Each one listens for a single trigger event, such as user.created or client.deleted.
Events fire
When a matching event occurs in the realm, FerrisKey builds a payload and sends an HTTP POST to the webhook endpoint.
Webhook structure
A webhook holds:
| Field | Description |
|---|---|
id | Unique webhook identifier |
endpoint | Target URL for HTTP POST delivery |
headers | Custom HTTP headers (e.g., Authorization, X-Webhook-Secret) |
name | Human-readable name |
description | Optional description |
subscribers | List of event subscriptions |
triggered_at | Last time any subscriber fired |
created_at / updated_at | Timestamps |
What people wire up
User onboarding
On user.created, send a welcome email, provision a trial account in your billing system, and notify the sales team in Slack.
Security monitoring
Forward auth.reset_password and client.maintenance.enabled events to PagerDuty or Opsgenie for on-call alerting.
Data sync
On user.updated and user.deleted, sync changes to your CRM, data warehouse, or marketing platform in real time.
Audit forwarding
Forward all events to Splunk, Elastic, or a custom SIEM for long-term storage and compliance reporting.