WhatsApp Web API WhatsApp Login WhatsApp Login Connect your instance via QR code or pairing code, and relogin when needed. Endpoints (4) GET Get QR Code Display the QR code to log into WhatsApp Web. GET Get Pairing Code Returns a pairing code to link the session from your phone. POST Relogin via QR Display a new QR code to relogin a logged-out instance. POST Relogin via Pair Code Relogin a logged-out instance using a pairing code. Validate WhatsApp Number Get QR Code