A complete production-tested guide to building a WhatsApp bot using Meta Cloud API. Written by an engineer who has shipped real WhatsApp automation in production.
What's inside: Meta developer setup, webhook configuration, sending text/image/template messages, AI-powered replies with Groq, scheduled expiry reminders, message templates guide, Railway deployment, and common errors with fixes.
Who is this for: Developers building chatbots, gym/school management systems, customer support automation, or any app needing WhatsApp integration.
