Orbit

A self-driving savings app on Solana. It sets aside a slice of your daily spending and grows it through on-chain USDC yield — the Acorns habit, with DeFi's transparency and better returns.

How it works

spend → Plaid detects the purchase → Orbit sets aside a bit (money stays in your bank)
   → once it crosses a threshold → converted to USDC → deposited into an on-chain vault
   → earns yield on Kamino → withdraw principal + yield anytime

Your savings live on-chain where you can verify them — not in a bank black box. Not FDIC-insured; principal is not guaranteed (see the in-app risk disclosure).

Repo structure

Path	What
app/	Next.js frontend (wallet connect, balance, activity, withdraw)
server/	Express backend (Plaid detection, set-aside ledger, threshold, vault deposit)
shared/	Shared types + the set-aside tier logic
orbit-vault/	Anchor program — the on-chain vault (the "chamber")

Getting started

pnpm install
cp server/.env.example server/.env   # fill in Plaid sandbox keys
pnpm dev                              # app on :3000, server on :4000

Try the pipeline (no bank needed)

curl -X POST http://localhost:4000/plaid/simulate-purchase \
  -H "Content-Type: application/json" \
  -d '{"id":"t1","userId":"u1","amountUsd":600,"detectedAt":"2026-09-23T00:00:00Z"}'

Toolchain

Node 26 · pnpm 11 · Rust 1.98 · Solana CLI (Agave) · Anchor

Status

Running on Solana devnet. The only simulated hop is the fiat→USDC step (Stripe); the Solana vault, deposit, and yield are real on-chain. Production = swap the mock for a real Stripe call and move to mainnet.