From 0 to SaaS in 48 Hours: Building WhatsExtract API with FastAPI and AI

# From 0 to SaaS in 48 Hours: Building WhatsExtract API with FastAPI and AI
## 🚀 The Problem That Started Everything

If you've ever worked in real estate, insurance, or any B2B sales role, you know the pain: dozens of WhatsApp messages flooding in daily, each containing valuable lead information buried in conversational text.

"Hi, I'm John Smith from ABC Corp. Looking for office space in downtown, budget around $5000/month. Can you call me at 555-0123 or email john@abccorp.com?"

Manually extracting this information takes 20-30 minutes daily. Multiply that across thousands of businesses, and you have millions of hours wasted on data entry.

That's when I decided to build WhatsExtract API.

## 💡 The Solution: AI-Powered Lead Extraction

WhatsExtract is a simple REST API that takes messy WhatsApp messages and returns structured JSON data in under 500ms.

### Input:

{ "message": "Hi, I'm Sarah needing insurance quote. Budget $500/month. Email: sarah@email.com", "mode": "full" }

{ "status": "ok", "data": { "name": "Sarah", "email": "sarah@email.com", "requirement": "insurance quote", "budget": 500, "budget_period": "monthly", "confidence": 0.95 } }