/api/webhooks manages, with the
same deliveries and the same X-Webhook-Signature HMAC. The signing secret is returned only when
it is created or rotated (and on an exact idempotent replay of that response); listings never
include it.
Because the account was provisioned through the partner API, every event delivered to these
endpoints carries data.account: the account’s SpitShake id and your external_id for it, so
one endpoint can serve all of your accounts and pick the signing secret before parsing anything
else. Accounts not provisioned by a partner get no account key. See
Webhooks.
201
Each change is audited (
partner.webhook_created, partner.webhook_updated,
partner.webhook_deleted, partner.webhook_secret_rotated). A webhook can also be created at
provisioning.

