fmonfasani/waseller — reverse-engineered prompt

Build me a WhatsApp sales agent SaaS where each business can connect its own Meta WhatsApp number, add store details and catalog facts, and get an AI assistant that replies to buyers automatically.

I want it to support multiple businesses on one install without mixing their conversations or product info. The agent should remember recent buyer messages, look up the right catalog facts, use the store’s own tone and policies, call an LLM through OpenRouter, then send the reply back through WhatsApp. Please include a basic admin dashboard to create tenants, connect WhatsApp, view health, manage skills, and add catalog facts.

Also build the backend API, webhook verification, local fake mode for testing without Meta, Postgres persistence for production, secret safe logging, rate limits, and simple deploy scripts for a VPS with nginx and Docker. Add tests and a smoke script so I can prove the webhook flow works end to end. Look up current Meta and OpenRouter docs if needed.