Official requirements and conversation model
Production use requires a verified number, an approved WhatsApp Business account and templates for outbound messages outside the 24-hour customer care window. Inside the window you can reply with more flexibility.
Chat API follows Meta's conversation-based pricing with dashboard visibility on volumes and costs.
Why work with a BSP like Roxpay
A Business Solution Provider streamlines onboarding, brand verification and template management so your team focuses on product delivery.
Technical integration: REST, webhooks and sandbox
APIs use REST patterns with secure authentication; webhooks deliver inbound messages, status updates and automation events in real time.
The sandbox lets you test flows safely before production go-live.
Next steps with Chat API
Create your account, issue API credentials and connect your backend to webhooks. For enterprise volumes or advanced GDPR setups, sales engineering can help design the right architecture.