I built a free AI-powered investment principles database with 1,377 rules from 26 legendary investors

Hey IH! 👋

I'm William, and I just launched KeepRule (keeprule.com) — a free tool that organizes investment wisdom from 26 legendary investors.

The problem: Investment wisdom is scattered across thousands of books, annual letters, and interviews. Most retail investors never read them.

What I built:

• 1,377 investment principles from Buffett, Munger, Graham, Dalio, and 22 others
• AI analysis prompts that replicate each master's analytical framework
• Investment psychology test with 8 investor archetypes
• Interactive "What Would Buffett Do?" scenarios
• Available in 5 languages

Tech stack: Nuxt 3 SSR + Go-Zero + MySQL

Traction: ~1,200 daily visitors organically

Business model: Free for now. Exploring premium features.

What I learned:

1. Programmatic SEO is incredibly powerful — we auto-generate 2,000+ pages from structured data
2. Multi-language content is an underrated competitive moat
3. Investment psychology content has surprisingly high engagement

Would love feedback from this community. What would you build next?

🔗 keeprule.com