CLEAK — WhatsApp APIPhase2external Client X API Key Only No JWT11. POST campaigns/send-direct → existing CLEAK customer groupAsk a question|Copy page|View as Markdown|More actionsPOSThttps://api.cleak.io/api/whatsapp/campaigns/send-manual#postApiWhatsappCampaignsSend-manual3Headersx-api-keystringOptionalRequestThis endpoint expects a string.