5 Free APIs Every SaaS Founder Should Use
When building LeadHunting AI, I relied entirely on free-tier APIs. Here are the top 5:
1. Google AI Studio
Gemini Flash (1,500 req/day), Imagen 3, Veo 2, TTS. Perfect for content generation pipelines.
2. Supabase
Free PostgreSQL database (500MB), authentication, real-time subscriptions. Alternative to Firebase.
3. Vercel
Free Hobby plan with 100 deployments/day. Serverless functions, edge CDN, automatic HTTPS.
4. Stripe
No monthly fee — pay per transaction. Dynamic pricing via price_data (no product creation needed).
5. Resend / Gmail SMTP
Free email sending (3,000 emails/month on Resend, 500/day on Gmail SMTP).
Bonus: GitHub API
5,000 requests/hour. Perfect for backlink building via repo READMEs, discussions, and gists.
Originally published on leadhunting.app
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