| Class | WebhookFeatureDisabled | Only certain users can create new webhooks. |
| Class | WebhookDeliveryFailure | A webhook delivery failed and should not be retried. |
| Class | WebhookDeliveryRetry | A webhook delivery failed and should be retried. |
| Class | AnyWebhookEventTypeVocabulary | Undocumented |
| Class | ValidWebhookEventTypeVocabulary | Undocumented |
| Interface | IWebhookSet | No interface docstring; 5/5 methods documented |
| Interface | IWebhookJob | A job related to a webhook. |
| Interface | IWebhookJobSource | No interface docstring; 2/2 methods documented |
| Interface | IWebhookDeliveryJobSource | No interface docstring; 1/1 methods documented |
| Interface | IWebhookClient | No interface docstring; 1/1 methods documented |