The Webhooks API allows you to subscribe to events happening in iTwin Platform.

### Supported event sources

- iModels events


webhooks

webhooks-v2

---

This operation can be used to activate a deactivated webhook. Deactivated webhooks do not forward any events to the callback, activating enables this feature back again.

### Authentication

Requires `Authorization` header with valid Bearer token for scope `webhooks:modify`.

For more documentation on authorization and how to get access token visit [OAUTH2 Authorization](https://developer.bentley.com/apis/overview/authorization/) page.

---


activate-webhook

OAuth access token with scope `webhooks:modify`

Authorization

Setting to `application/vnd.bentley.itwin-platform.v1+json` is recommended.

Accept

The request has been accepted for processing.

This response indicates that request lacks valid authentication credentials. Access token might not been provided, issued by the wrong issuer, does not have required scopes or request headers were malformed.

application/json;InvalidAuthorizationScheme

User is not authorized to activate a webhook.

The 422 (Unprocessable Entity) status code indicates that the request cannot be processed by the server due to a client error (e.g. malformed request syntax).

This response indicates that the user has sent too many requests in a given amount of time.

The number of requests exceeds the rate-limit for the client subscription.

retry-after

---

### Event Types

Currently supported webhook event types:
- iModelDeletedEvent
- NamedVersionCreatedEvent
- ChangeSetPushedEvent
- ChangesetGroupCompletedEvent
- ChangesReadyEvent

### Security

On webhook creation, webhook secret is being generated. Before forwarding an event to client, secret is used together with whole event body to generate `HMAC-SHA256` signature which is included in `Signature` request header. Before doing anything with the received event client SHOULD use its own secret copy together with the event body and generate another signature on their end to validate the event source. If both signatures are the same, event SHOULD be accepted as valid one and ignored otherwise.

### Expiration

When creating a webhook expiration date time CAN be specified after which the webhook will become deactivated. If expiration time is not specified, webhook expires automatically after 30 days.

### Notes

Webhook deletion is not persisted after iModel deletion. When deleting an iModel make sure to delete related webhooks as well.

### Authentication

Requires `Authorization` header with valid Bearer token for scope `webhooks:modify`.

For more documentation on authorization and how to get access token visit [OAUTH2 Authorization](https://developer.bentley.com/apis/overview/authorization/) page.

---


create-imodels-webhook

Location

---

This operation can be used to deactivate a webhook. Deactivated webhooks do not forward any events to the callback. Deactivated webhooks are not deleted and can be activated again.

### Authentication

Requires `Authorization` header with valid Bearer token for scope `webhooks:modify`.

For more documentation on authorization and how to get access token visit [OAUTH2 Authorization](https://developer.bentley.com/apis/overview/authorization/) page.

---


deactivate-webhook

User is not authorized to deactivate a webhook.

---

Deleted webhooks can not be restored and have to be created again. If you want to temporary stop receiving events consider deactivating a webhook instead.

### Authentication

Requires `Authorization` header with valid Bearer token for scope `webhooks:modify`.

For more documentation on authorization and how to get access token visit [OAUTH2 Authorization](https://developer.bentley.com/apis/overview/authorization/) page.

---


delete-webhook

User is not authorized to delete a webhook.

---

Returns a list of user's owned webhooks of any event source.

### Authentication

Requires `Authorization` header with valid Bearer token for scope `webhooks:read`.

For more documentation on authorization and how to get access token visit [OAUTH2 Authorization](https://developer.bentley.com/apis/overview/authorization/) page.

---


get-webhooks

OAuth access token with scope `webhooks:read`

---

Returns a detailed response of a webhook.

### Authentication

Requires `Authorization` header with valid Bearer token for scope `webhooks:read`.

For more documentation on authorization and how to get access token visit [OAUTH2 Authorization](https://developer.bentley.com/apis/overview/authorization/) page.

---


get-webhook

---

This operation can be used to manually confirm webhook callback ownership if a client application does not support required handshake. Fully constructed URL with required query parameters values for this operation can be found within automatic validation request header `WebHook-Request-Callback` that is sent to specified callback URL after webhook is created. If webhook callback ownership was confirmed automatically, this operation should not be used anymore.

### Authentication

Requires `Authorization` header with valid Bearer token for scope `webhooks:modify`.

For more documentation on authorization and how to get access token visit [OAUTH2 Authorization](https://developer.bentley.com/apis/overview/authorization/) page.

---


confirm-webhook-callback-ownership

Webhook callback ownership was confirmed.

Samples - Webhooks | iTwin Platform

Node.js (Express) application that shows the basic examples of consuming Webhooks API and reacting to iTwin Platform events.

webhooks-api-sample-app

This tutorial will teach you how to use Webhooks API to subscribe to iModel events and introduce basic event handling workflows.