The doc says only a subset of webhooks are supported:
https://developer.atlassian.com/cloud/jira/platform/webhooks/?_ga=2.246583236.1507143362.1676324061-182198983.1671586408#registering-a-webhook-using-the-rest-api--for-connect-and-oauth-2-0-apps-
Confluence webhooks (e.g. “page_created”) isn’t on that list, but I see that services like Zapier are able to get page created webhooks with a OAuth 2.0 app. Is that list outdated?