Send a test webhook

Sends a synthetic alert.match.created payload to every active webhook connection attached to this alert, so you can verify your endpoint end to end — receipt, signature, and parsing — without waiting for a real match. The payload is byte-for-byte shaped like a live delivery and carries this alert's real id, title, kind, and first watched entity, but its match content is illustrative sample data and the envelope is flagged test: true so your handler can skip real side effects. Nothing is persisted — a test never appears in the alert's delivery log. Returns one result per connection the test was POSTed to: whether the endpoint accepted the POST, its status code, and any error. Channels whose connection has been deleted are skipped and don't appear in the results. A down or non-2xx endpoint is reported as delivered: false rather than failing the request. Returns 422 when the alert has no active webhook connection — either none is configured, or every configured connection has been deleted.