Not callable with an API key. A
POST /channels/whatsapp/send-template
endpoint does exist, but it’s internal — it requires a service token rather
than a tenant API key, so it has no request runner here.The supported way to send pre-approved templates is through a
WhatsApp Campaign — a campaign maps each
call outcome to a template and sends it automatically.Creating a WhatsApp campaign with templates
phoneNumberId— fromGET /whatsapp/fetch-numbers(campaign-engine)templates— each entry maps acallStatus(ANSWERED/UNANSWERED) to an approved Meta template name; list approved templates viaGET /whatsapp/meta-templates

