Tabi

Problem

Sending stablecoins to a friend or splitting a dinner on Solana still felt like using a block explorer. Wallet addresses, token accounts, and transaction feeds were exposed to people who just wanted to pay someone back.

What I built

Tabi is a consumer-grade web app for instant USDC and SOL transfers, smart bill splitting (equal, by item, or custom), and an AI financial advisor that reads the connected wallet's activity. A Next.js App Router frontend talks to an Express backend; users connect Phantom or Solflare, and there is no friend graph to maintain, you pay a username or a wallet address. Supabase holds user data, and the dashboard is split into Overview, Payments, Bill Splitter, and AI Advisor tabs with a real-time payment feed.

I led product design and built across the stack during the Colosseum Breakout Hackathon, shipping a functional MVP with live transactions and the AI module in under 48 hours.

Outcome

Colosseum Breakout Hackathon finalist, May 2025. The app is live and open source.