I Built a Suite of 6 Financial Tools in My Browser Stack — Here's the Architecture

KashVector is live. Six free, client-side financial tools at kashvector.com . No login, no backend database, no data leaving your device. Everything runs in the browser.

I came back to coding after 15 years away — last time I wrote software was mobile apps before the iPhone. I used Claude Code as my development partner throughout. This is a writeup of the architecture, the key decisions, and the AI-assisted workflow I built around it.

The Tools

Stock Evaluator — scores any ticker against Buffett, Dalio, and Graham frameworks using live Yahoo Finance data

Budget Planner — six-step wizard with payslip parsing, waterfall spending chart, and savings benchmarks

Debt Recycling / Investment Property Calculator — models converting home loan debt to tax-deductible investment debt

Portfolio Health Check — concentration risk analysis across sector, region, and individual stocks

FIRE Calculator — Financial Independence number,…