test.ping

POSTyour webhook address

Test event. «Send a test event» in the console sends it to the webhook address, whatever its events and even when it is turned off. Use it to check the address and the signature check.

INFO

This event cannot be chosen in the webhook settings: the console sends it on demand.

Body

Field	Type	Description
type	string	Always test.ping.
timestamp	string (date-time)	When the event happened, UTC.
data	object
data.endpoint	string	The webhook address, whe_….

{
  "type": "test.ping",
  "timestamp": "2026-11-02T12:00:04+00:00",
  "data": {
    "endpoint": "whe_CgdWeHQNAxHTekU8MJRZ9"
  }
}

Headers

Header	Description
webhook-id	The delivery, whd_…. The same on every attempt of one delivery: use it to drop a repeated delivery.
webhook-timestamp	Unix time of the attempt, in seconds. Refuse deliveries older than 5 minutes.
webhook-signature	v1, and the base64 HMAC-SHA256 of {webhook-id}.{webhook-timestamp}.{body}, keyed with the secret (the part after whsec_, base64-decoded).
content-type	application/json
user-agent	ACE-SEND-Webhooks/1

Check the signature before you trust the body, answer 2xx within 5 seconds and do the work afterwards. See Webhooks for the signature check, retries and duplicates.