Zero-Cost SaaS Architecture: How I Run LeadHunting AI for $0/Month
The Stack (All Free Tier)
| Service | Free Tier | What We Use It For |
|---|---|---|
| Vercel Hobby | 100 deploys/day, 100GB BW | Hosting + serverless |
| Supabase | 500MB DB, 50K MAU | PostgreSQL database |
| Google AI Studio | 1,500 req/day | Gemini, Imagen, Veo, TTS |
| GitHub | 5,000 req/hour | Code + API backlinks |
| DEV.to | Unlimited | Article syndication (DA 86) |
| Hashnode | Unlimited | Article syndication (DA 72) |
| Gmail SMTP | 500 emails/day | Transactional emails |
| Stripe | Pay-per-transaction | Credit pack purchases |
Total Monthly Cost: $0
The admin uses all free tier services. Users pay for AI generation via credits (500%+ margin).
Architecture
User visits site
→ Vercel CDN (free) serves static + dynamic pages
→ Next.js (free) renders SPA + API routes
→ Supabase (free) stores users, leads, blog posts
→ Google AI Studio (free) generates content
→ DEV.to (free) syndicates articles with canonical URLs
→ Hashnode (free) syndicates articles with canonical URLs
→ Stripe (per-transaction) processes credit pack purchases
Autonomous Content Pipeline
Every 6 hours (triggered by traffic):
- Gemini Flash generates SEO blog post
- Imagen 3 creates cover image
- TTS creates audio narration
- Veo 2 creates video clip
- Auto-publishes to DEV.to + Hashnode
- Auto-posts to social media
All for $0. Users pay credits for their own AI usage.
Links
Originally published on leadhunting.app
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